Delaware County, colloquially referred to as Delco, is a

county A county is a geographic region of a country used for administrative or other purposes Chambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

in the

Commonwealth A commonwealth is a traditional English term for a political community founded for the common good. Historically, it has been synonymous with "republic". The noun "commonwealth", meaning "public welfare, general good or advantage", dates from the ...

Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...

. With a population of 576,830 as of the 2020 census, it is the fifth-most populous county in Pennsylvania and the third=smallest in area. Delaware County is part of the

Delaware Valley The Delaware Valley is a metropolitan region on the East Coast of the United States that comprises and surrounds Philadelphia, the sixth most populous city in the nation and 68th largest city in the world as of 2020. The toponym Delaware Val ...

and borders

Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since ...

, the sixth most populous city in the nation as of 2020. The county was created on September 26, 1789, from part of

Chester County Chester County may refer to: * Chester County, Pennsylvania, United States * Chester County, South Carolina, United States * Chester County, Tennessee, United States * Cheshire Cheshire ( ) is a ceremonial and historic county in North West Eng ...

and named for the

Delaware River The Delaware River is a major river in the Mid-Atlantic region of the United States. From the meeting of its branches in Hancock, New York, the river flows for along the borders of New York, Pennsylvania, New Jersey, and Delaware, before ...

. The county is adjacent to the city-county of

and is included in the

– Camden– Wilmington, PA– NJ– DE– MD metropoilitan stastical area known as the

. Its

county seat A county seat is an administrative center, seat of government, or capital city of a county or civil parish. The term is in use in Canada, China, Hungary, Romania, Taiwan, and the United States. The equivalent term shire town is used in the US ...

is Media.

History

Map of the early settlements of Delaware County, Penna

Delaware County lies in the river and bay drainage area named "Delaware" in honor of

Thomas West, 3rd Baron De La Warr Thomas West, 3rd Baron De La Warr ( ; 9 July 1577 – 7 June 1618), was an English merchant and politician, for whom the bay, the river, and, consequently, a Native American people and U.S. state, all later called "Delaware", were named. He was ...

, Governor of the nearby English colony of

Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth are ...

. The land was explored by

Henry Hudson Henry Hudson ( 1565 – disappeared 23 June 1611) was an English sea explorer and navigator during the early 17th century, best known for his explorations of present-day Canada and parts of the northeastern United States. In 1607 and 16 ...

in 1609, and over the next several decades it was variously claimed and settled by the

Swedes Swedes ( sv, svenskar) are a North Germanic ethnic group native to the Nordic region, primarily their nation state of Sweden, who share a common ancestry, culture, history and language. They mostly inhabit Sweden and the other Nordic countr ...

, the Dutch, and the

English English usually refers to: * English language * English people English may also refer to: Peoples, culture, and language * ''English'', an adjective for something of, from, or related to England ** English national ...

. Its original human inhabitants were the

Lenape The Lenape (, , or Lenape , del, Lënapeyok) also called the Leni Lenape, Lenni Lenape and Delaware people, are an indigenous peoples of the Northeastern Woodlands, who live in the United States and Canada. Their historical territory inclu ...

tribe of American Indians. Once the Dutch were defeated and the extent of

New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * '' ...

was determined, King

Charles II of England Charles II (29 May 1630 – 6 February 1685) was King of Scotland from 1649 until 1651, and King of England, Scotland and Ireland from the 1660 Restoration of the monarchy until his death in 1685. Charles II was the eldest surviving child o ...

made his grant to

William Penn William Penn ( – ) was an English writer and religious thinker belonging to the Religious Society of Friends (Quakers), and founder of the Province of Pennsylvania, a North American colony of England. He was an early advocate of democracy a ...

in order to found the colony which came to be named

. Penn divided his colony into three counties: Bucks, Philadelphia, and Chester. The riverfront land south of Philadelphia, being the most accessible, was quickly granted and settled. In 1789, the southeastern portion of

was divided from the rest and named Delaware County for the

Geography

According to the

U.S. Census Bureau The United States Census Bureau (USCB), officially the Bureau of the Census, is a principal agency of the U.S. Federal Statistical System, responsible for producing data about the American people and economy. The Census Bureau is part of the ...

, the county has a total area of , of which is land and (3.5%) is water. It is the third-smallest county in Pennsylvania by area. Delaware County is roughly diamond- or kite-shaped, with the four sides formed by the

boundary to the northwest, the boundary with the state of

Delaware Delaware ( ) is a state in the Mid-Atlantic region of the United States, bordering Maryland to its south and west; Pennsylvania to its north; and New Jersey and the Atlantic Ocean to its east. The state takes its name from the adjacent ...

, a portion of the "

Twelve-Mile Circle The Twelve-Mile Circle is an approximately circular arc which forms most of the boundary between Pennsylvania and Delaware. It is not actually a circle, but rather a combination of different circular arcs that have been feathered together. It ...

") to the southwest, the

, forming the border with the state of

New Jersey New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delawa ...

) to the southeast, and the city of

and Montgomery County to the east and northeast. The lowest point in the state of Pennsylvania is located on the Delaware River in Marcus Hook in Delaware County, where it flows out of Pennsylvania and into

. The highest point in Delaware County is 500 feet at two points southeast of Wyola in Newtown Townshi

Waterways in Delaware County generally flow in a southward direction and ultimately drain into the Delaware River. The waterways are, from west to east: the Brandywine Creek (Christina River), Brandywine River (forming a portion of the county's western boundary with Chester County),

Naaman's Creek Naamans Creek (spelled Naaman Creek on federal maps) is a tributary of the Delaware River in northeast New Castle County, Delaware and southeast Delaware County, Pennsylvania. The stream rises near the intersection of Foulk Road and Naamans Cre ...

, Stoney Creek, Chester Creek,

Ridley Creek Ridley Creek is a tributary of the Delaware River in Chester and Delaware counties, Pennsylvania in the United States.Gertler, Edward. ''Keystone Canoeing'', Seneca Press, 2004. The entire drainage basin is in the suburban Philadelphia area, but ...

Crum Creek Crum Creek (from the Dutch, meaning "crooked creek") is a creek in Delaware County and Chester County, Pennsylvania, flowing approximately , generally in a southward direction and draining into the Delaware River in Eddystone, Pennsylvania. ...

, Muckinipates Creek, Darby Creek and

Cobbs Creek Cobbs Creek is an U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed April 1, 2011 tributary of Darby Creek in Delaware County, Pennsylvania, in the United States. It forms an approximat ...

(forming a portion of the county's eastern boundary with Philadelphia). Crum Creek was dammed in 1931 near Pennsylvania Route 252 to fill

Springton Lake The Springton Reservoir (also known as Springton Lake or the Geist Reservoir) is a reservoir that is located in Delaware County in the Commonwealth of Pennsylvania in the United States. History and notable features Created in 1931 when Crum Cre ...

(also known as Geist Reservoir), an approximately drinking water reservoir maintained by

Aqua America Essential Utilities (formerly Aqua America and Peoples Natural Gas) is an American utility company that has stakes in Illinois, Indiana, New Jersey, North Carolina, Ohio, Pennsylvania, Texas and Virginia The company provides drinking wate ...

, the county's largest lake. The

Trainer Refinery Trainer Refinery is an oil refining facility located in Trainer, Delaware County, Pennsylvania. The facility is about downstream from the Port of Chester and fifteen miles southwest of Philadelphia along the Delaware River. Stoney Creek is al ...

and the Port of Chester are located along the shores of the Delaware River.

Adjacent counties

Montgomery County, Pennsylvania Montgomery County is a County (United States), county in the Commonwealth (U.S. state), Commonwealth of Pennsylvania. It is the List of counties in Pennsylvania, third-most populous county in Pennsylvania and the List of the most populous cou ...

(north) *

Philadelphia County, Pennsylvania Philadelphia County is a county in the Commonwealth of Pennsylvania. It is the most populous county in Pennsylvania. As of the 2020 census, Philadelphia County had a population of 1,603,797. The county is the second smallest county in Pennsy ...

(northeast) *

Gloucester County, New Jersey Gloucester County () is a county located in the U.S. state of New Jersey. As of the 2020 U.S. census, the county's population was 302,294. Gloucester County is located approximately southeast of Philadelphia and northwest of Atlantic City. ...

(southeast) *

New Castle County, Delaware New Castle County is the northernmost of the three counties of the U.S. state of Delaware (New Castle, Kent, and Sussex). As of the 2020 census, the population was 570,719, making it the most populous county in Delaware, with nearly 60% of th ...

(southwest) *

Chester County, Pennsylvania Chester County (Pennsylvania Dutch: ''Tscheschter Kaundi''), colloquially known as Chesco, is a county in the Commonwealth of Pennsylvania. It is located in the Delaware Valley region of the state. As of the 2020 census, the population was 53 ...

(west) Delaware County is one of four counties in the United States to border a state with which it shares the same name (the other three are

Nevada County, California Nevada County () is a county located in the U.S. state of California, in the Sierra Nevada. As of the 2020 census, the population was 102,241. The county seat is Nevada City. Nevada County comprises the Truckee-Grass Valley, CA Micropoli ...

Texas County, Oklahoma Texas County is a county located in the panhandle of the U.S. state of Oklahoma. Its county seat is Guymon. As of the 2010 census, the population was 20,640. It is the second largest county in Oklahoma, based on land area, and is named for ...

, and Ohio County, West Virginia).

National protected areas

First State National Historical Park First State National Historical Park is a National Park Service unit which lies primarily in the state of Delaware but which extends partly into Pennsylvania in Chadds Ford. Initially created as First State National Monument by President Barack O ...

(part) * John Heinz National Wildlife Refuge (part)

State protected area

of the county are occupied by the

Ridley Creek State Park Ridley Creek State Park is a Pennsylvania state park in Edgmont, Middletown, and Upper Providence Townships, Delaware County, Pennsylvania in the United States. The park, about north of the county seat of Media, offers many recreational act ...

Demographics

As of the 2010 census, the county was 71.1% White non-Hispanic, 19.7% Black or African American, 0.2% Native American or Alaskan Native, 4.7% Asian, <0.1% Native Hawaiian, 2.0% were two or more races, and 0.9% were some other race. 3.0% of the population were of Hispanic or Latino ancestry. As of the 2000 census, there were 550,864 people, 206,320 households, and 139,472 families residing in the county. The population density was . There were 216,978 housing units at an average density of . The racial makeup of the county was 80.3% White, 14.5%

African American African Americans (also referred to as Black Americans and Afro-Americans) are an ethnic group consisting of Americans with partial or total ancestry from sub-Saharan Africa. The term "African American" generally denotes descendants of ens ...

, 0.1% Native American, 3.3%

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an are ...

n, <0.1% Pacific Islander, 0.6% from other races, and 1.2% from two or more races. 1.5% of the population were

Hispanic The term ''Hispanic'' ( es, hispano) refers to people, cultures, or countries related to Spain, the Spanish language, or Hispanidad. The term commonly applies to countries with a cultural and historical link to Spain and to viceroyalties for ...

or Latino of any race. 24.6% were of Irish, 17.5% Italian, 10.1%

German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ge ...

and 6.7%

ancestry. There were 206,320 households, out of which 31.5% had children under the age of 18 living with them, 50.8% were

married couples Marriage, also called matrimony or wedlock, is a culturally and often legally recognized union between people called spouses. It establishes rights and obligations between them, as well as between them and their children, and between ...

living together, 12.9% had a female householder with no husband present, and 32.4% were non-families. 27.6% of all households were made up of individuals, and 11.6% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 3.17. In the county, the population was spread out, with 24.8% under the age of 18, 8.9% from 18 to 24, 28.8% from 25 to 44, 21.9% from 45 to 64, and 15.6% who were 65 years of age or older. The median age was 37 years. For every 100 females there were 91.2 males. For every 100 females age 18 and over, there were 86.9 males. The median income for a household in the county was $50,092, and the median income for a family was $61,590. Males had a median income of $44,155 versus $31,831 for females. The

per capita income Per capita income (PCI) or total income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year. It is calculated by dividing the area's total income by its total population. Per capita i ...

for the county was $25,040. About 5.8% of families and 8.0% of the population were below the

poverty line The poverty threshold, poverty limit, poverty line or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for ...

, including 10.0% of those under age 18 and 7.1% of those age 65 or over.

2020 Census

Communities

Under Pennsylvania law, there are four types of incorporated municipalities:

cities A city is a human settlement of notable size.Goodall, B. (1987) ''The Penguin Dictionary of Human Geography''. London: Penguin.Kuper, A. and Kuper, J., eds (1996) ''The Social Science Encyclopedia''. 2nd edition. London: Routledge. It can be def ...

boroughs A borough is an administrative division in various English-speaking countries. In principle, the term ''borough'' designates a self-governing walled town, although in practice, official use of the term varies widely. History In the Middle A ...

, townships, and exactly one

town A town is a human settlement. Towns are generally larger than villages and smaller than cities, though the criteria to distinguish between them vary considerably in different parts of the world. Origin and use The word "town" shares an o ...

. There are 49 municipalities in Delaware County:

City

Chester Chester is a cathedral city and the county town of Cheshire, England. It is located on the River Dee, close to the English–Welsh border. With a population of 79,645 in 2011,"2011 Census results: People and Population Profile: Chester Loca ...

Boroughs

* Aldan * Brookhaven * Chester Heights * Clifton Heights * Collingdale *

Colwyn Colwyn was a local government district with borough status from 1974 to 1996, being one of six districts in the county of Clwyd, north-east Wales. History The borough was created on 1 April 1974, under the Local Government Act 1972. It covere ...

* Darby * East Lansdowne * Eddystone * Folcroft * Glenolden * Lansdowne * Marcus Hook * Media (

) * Millbourne * Morton * Norwood * Parkside * Prospect Park * Ridley Park * Rose Valley * Rutledge * Sharon Hill * Swarthmore * Trainer * Upland * Yeadon

Townships

Aston Aston is an area of inner Birmingham, England. Located immediately to the north-east of Central Birmingham, Aston constitutes a ward within the metropolitan authority. It is approximately 1.5 miles from Birmingham City Centre. History Aston wa ...

Bethel Bethel ( he, בֵּית אֵל, translit=Bēṯ 'Ēl, "House of El" or "House of God",Bleeker and Widegren, 1988, p. 257. also transliterated ''Beth El'', ''Beth-El'', ''Beit El''; el, Βαιθήλ; la, Bethel) was an ancient Israelite sanc ...

Chadds Ford Chadds Ford is a census-designated place (CDP) in Delaware and Chester counties, Pennsylvania, United States, comprising the unincorporated communities of Chadds Ford and Chadds Ford Knoll. It was first listed as a CDP prior to the 2020 censu ...

Concord Concord may refer to: Meaning "agreement" * Pact or treaty, frequently between nations (indicating a condition of harmony) * Harmony, in music * Agreement (linguistics), a change in the form of a word depending on grammatical features of other ...

* Darby * Edgmont * Haverford * Lower Chichester * Marple * Middletown * Nether Providence * Newtown * Radnor * Ridley * Springfield * Thornbury * Tinicum * Upper Chichester * Upper Darby * Upper Providence

Census-designated places

Census-designated place A census-designated place (CDP) is a concentration of population defined by the United States Census Bureau for statistical purposes only. CDPs have been used in each decennial census since 1980 as the counterparts of incorporated places, suc ...

s are geographical areas designated by the

for the purposes of compiling demographic data. They are not actual jurisdictions under Pennsylvania law. Other unincorporated communities, such as villages, may be listed here as well. * Ardmore *

Boothwyn Boothwyn is a census-designated place (CDP) in Delaware County, Pennsylvania, United States. The population was 4,933 at the 2010 census, down from 5,206 at the 2000 census. The census estimation for population circa 2019 is 6,115. History The ...

* Broomall * Cheyney University (''mostly in

'') * Drexel Hill *

Folsom Folsom may refer to: People * Folsom (surname) Places in the United States * Folsom, Perry County, Alabama * Folsom, Randolph County, Alabama * Folsom, California * Folsom, Georgia * Folsom, Louisiana * Folsom, Missouri * Folsom, New Jerse ...

Haverford College Haverford College ( ) is a private liberal arts college in Haverford, Pennsylvania. It was founded as a men's college in 1833 by members of the Religious Society of Friends (Quakers), began accepting non-Quakers in 1849, and became coeducationa ...

Lima Lima ( ; ), originally founded as Ciudad de Los Reyes (City of The Kings) is the capital and the largest city of Peru. It is located in the valleys of the Chillón, Rímac and Lurín Rivers, in the desert zone of the central coastal part of ...

* Linwood * Village Green-Green Ridge * Woodlyn

Unincorporated communities

* Garrett Hill * Glen Mills * Havertown * Radnor *

Riddlewood Riddlewood is a residential housing development in Middletown Township, Delaware County, Pennsylvania, United States, a suburb of Philadelphia. The name comes from famous racehorse owner Samuel D. Riddle, who owned the property before it was de ...

* Rosemont *

Secane Secane is an unincorporated community in Ridley Township and Upper Darby Township, Delaware County, Pennsylvania, United States. At its center is retail shopping and a commuter rail station. Immediately surrounding the center are four large g ...

* Thornton * Villanova * Wallingford * Wawa * Wayne

Population ranking

The population ranking of the following table is based on the 2010 census of Delaware County. † ''county seat''

Politics and government

The county has operated under a home-rule charter with five at-large council-members since 1972. As of November 7, 2022, there are 415,207 registered voters in Delaware County. * Democratic: 207,180 (49.90%) * Republican: 150,527 (36.25%) *

Independent Independent or Independents may refer to: Arts, entertainment, and media Artist groups * Independents (artist group), a group of modernist painters based in the New Hope, Pennsylvania, area of the United States during the early 1930s * Independe ...

: 38,317 (9.23%) *

Third Party Third party may refer to: Business * Third-party source, a supplier company not owned by the buyer or seller * Third-party beneficiary, a person who could sue on a contract, despite not being an active party * Third-party insurance, such as a V ...

: 19,183 (4.62%) Until the

1990s File:1990s decade montage.png, From top left, clockwise: The Hubble Space Telescope orbits the Earth after it was launched in 1990; American General Dynamics F-16 Fighting Falcon, F-16s and McDonnell Douglas F-15 Eagle, F-15s fly over burning o ...

, Delaware County was regarded as a strongly Republican county. The Delaware County Republican

political machine In the politics of representative democracies, a political machine is a party organization that recruits its members by the use of tangible incentives (such as money or political jobs) and that is characterized by a high degree of leadership co ...

was controlled by William McClure and his son John J. McClure from 1875 to 1965. Delaware County voted for the Republican candidate in nearly every election from 1854 through 1988, one of the two exceptions being

Lyndon Johnson Lyndon Baines Johnson (; August 27, 1908January 22, 1973), often referred to by his initials LBJ, was an American politician who served as the 36th president of the United States from 1963 to 1969. He had previously served as the 37th vice ...

's national landslide of 1964. As a measure of how Republican the county was,

Franklin Roosevelt Franklin Delano Roosevelt (; ; January 30, 1882April 12, 1945), often referred to by his initials FDR, was an American politician and attorney who served as the 32nd president of the United States from 1933 until his death in 1945. As the ...

was completely shut out in all four of his successful campaigns for president. Even in his 46-state landslide victory of 1936, Roosevelt only got 45 percent of Delaware County's vote. In 1992, however, the county swung from a 21-point win for George H. W. Bush to a narrow one-point win for

Bill Clinton William Jefferson Clinton (né Blythe III; born August 19, 1946) is an American politician who served as the 42nd president of the United States from 1993 to 2001. He previously served as governor of Arkansas from 1979 to 1981 and again ...

, who became only the second Democrat to win the county in the 20th century. Clinton won it just under 10 points in 1996, coming up just short of a majority. The county has gone Democratic in every Presidential election since then by 10 points or more by progressively-increasing margins. In the 2004 election Democratic presidential candidate

John Kerry John Forbes Kerry (born December 11, 1943) is an American attorney, politician and diplomat who currently serves as the first United States special presidential envoy for climate. A member of the Forbes family and the Democratic Party, he ...

won the county by 14 points.

Barack Obama Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th president of the United States from 2009 to 2017. A member of the Democratic Party (United States), Democratic Party, Obama was the first Af ...

won it by large 21-point margins in each of his bids for president.

Hillary Clinton Hillary Diane Rodham Clinton ( Rodham; born October 26, 1947) is an American politician, diplomat, and former lawyer who served as the 67th United States Secretary of State for President Barack Obama from 2009 to 2013, as a United States sen ...

carried it by 22 points in 2016. Joe Biden carried it in 2020 with 62 percent of the vote, his second-strongest performance in Pennsylvania.

Donald Trump Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who served as the 45th president of the United States from 2017 to 2021. Trump graduated from the Wharton School of the University of P ...

turned in the worst showing for a Republican in the county in over 160 years. Driving the county's Democratic shift have been longstanding trends in voter registration advantage and demographics. In 1998, Republicans held a voter registration advantage of about 125,000, but by 2008 that advantage had shrunk to under 20,000 voters. As of the November 2021 election, Democrats enjoyed a voter registration advantage of 50,000. Propelling and compounding the voter registration shift has been a change in demographics in the county. Since the 2000 Census, the White population of the county has decreased from 80.3% to 68.5% as of the 2020 Census, while, the Black population has risen from 14.5% to 22.7%, driven by the

gentrification Gentrification is the process of changing the character of a neighborhood through the influx of more affluent residents and businesses. It is a common and controversial topic in urban politics and planning. Gentrification often increases the ...

and University City neighborhood and rapid demographic shift in Upper Darby. Further increasing the shift has been the change in education level demographics in the county, as voters have become more college educated and white collar (and, in turn, less blue collar) over the past few decades. While the longstanding Republican registration edge has been erased, Republicans still remain competitive with Democrats at the state and local level. Most Republicans from the county tend to be fiscally conservative and socially moderate, as is the case with Republicans from most suburban Philadelphia counties. In the 2004

US Senate The United States Senate is the upper chamber of the United States Congress, with the House of Representatives being the lower chamber. Together they compose the national bicameral legislature of the United States. The composition and po ...

election, Republican Arlen Specter defeated Joe Hoeffel but Democrat Bob Casey, Jr. defeated

Rick Santorum Richard John Santorum ( ; born May 10, 1958) is an American politician, attorney, and political commentator. A member of the Republican Party, he served as a United States Senator from Pennsylvania from 1995 to 2007 and was the Senate's third ...

in the 2006 Senate election. All three Democratic state row office candidates carried it in 2008. In 2016, Delaware County elected all Democrats in national office elections except Republican Patrick Meehan (U.S. Representative). After the election of

2016 File:2016 Events Collage.png, From top left, clockwise: Bombed-out buildings in Ankara following the 2016 Turkish coup d'état attempt; the Impeachment of Dilma Rousseff, impeachment trial of Brazilian President Dilma Rousseff; Damaged houses duri ...

, the county rapidly shifted blue as a result of increased Democratic turnout and less enthusiasm from often less conservative suburban Republicans. In the 2019 elections for the Delaware County Council, Democrats swept the board and elected Monica Taylor, Elaine P. Schaefer, and Christine Reuther, gaining control of the county Council for the first time since the

Civil War A civil war or intrastate war is a war between organized groups within the same state (or country). The aim of one side may be to take control of the country or a region, to achieve independence for a region, or to change government polici ...

. This was the first time in history that the county had an all-Democratic Council. As of 2020, all of Delaware County is located in the state's 5th congressional district, represented by Democrat Mary Gay Scanlon. Prior to 2019, most of Delaware County had been in the 7th congressional district. The district had been held for 20 years by Republican Curt Weldon until he was ousted by Joe Sestak, a retired admiral, in the 2006 U.S. House of Representatives election. Also in the 2006 election, Democrat Bryan Lentz unseated Republican incumbent State Representative

Tom Gannon Thomas P. Gannon (April 5, 1943 – January 10, 2021) was an American politician from Pennsylvania who served as a Republican member of the Pennsylvania House of Representatives, District 161 from 1979 to 2006. Early life and education Gannon ...

in the 161st House district. In 2010 Sestak ran for the senate seat vacated by Arlen Specter and was replaced by Republican Pat Meehan, who defeated Lentz, the Democratic candidate. Lentz was replaced in the State House by Joe Hackett, a Republican. Meehan represented the 7th district until his resignation on April 27, 2018. Before it was thrown out by a Pennsylvania Supreme Court decision in 2018, the 7th Congressional District had been regarded one of the most irregularly drawn districts in the nation.

Delaware County Council

County row officers

Row officers, a term unique to Pennsylvania, are a conglomeration of elected officials defined by Article IX, Section 4 of the Pennsylvania Constitution. This unit of officers includes the position of controller, District Attorney, treasurer, sheriff, register of wills, recorder of deeds, prothonotaries, clerks of the court, and the coroner. It is thought that this term originated because these positions were arranged in a row on a typical ballot.

United States Senate

United States House of Representatives

State Senate

State House of Representatives

Corrections

The

George W. Hill Correctional Facility George W. Hill Correctional Facility is a county jail and prison located in Delaware County, Pennsylvania, in the townships of Thornbury and Concord. It has a Thornton postal address, and is within the Philadelphia metropolitan area. Founded in ...

(Delaware County Prison) is located in Thornbury Township.Chapter 7 7–11
." Comprehensive Zoning Plan. Thornbury Township. Retrieved on September 6, 2011. "The three major institutions found in the Township, the Delaware County Prison, Glen Mills Schools and Cheyney University ..." Delaware County, Pennsylvania. Retrieved on September 6, 2011. "George W. Hill Correctional Facility (Delaware County Prison), which is located on 500 Cheyney Road in Thornbury Township .. The jail houses pre-trial inmates and convicted persons who are serving sentences of no longer than two years less one day. It is operated by the for-profit prison corporation GEO Group, of

Boca Raton, Florida Boca Raton ( ; es, Boca Ratón, link=no, ) is a city in Palm Beach County, Florida, United States. It was first incorporated on August 2, 1924, as "Bocaratone," and then incorporated as "Boca Raton" in 1925. The population was 97,422 in the ...

. It is the only privately operated county-level correctional facility in Pennsylvania, although there are plans for it to be deprivatized as early as December 31, 2020.

Education

Public school districts

School districts include: * Chester Upland School District *

Chichester School District The Chichester School District (CSD) is a suburban public school district located in southeastern Delaware County, Pennsylvania. It encompasses approximately , covering the Boroughs of Marcus Hook, Trainer, Lower Chichester Township, and Upp ...

Garnet Valley School District Garnet Valley School District (GVSD) is a public school district based in Glen Mills, Pennsylvania, within the Greater Philadelphia area. GVSD serves the town of Chester Heights, Pennsylvania, Chester Heights, Bethel Township, Delaware County, Pe ...

* Haverford Township School District *

Interboro School District Interboro School District is a midsized, suburban public school district located in southeastern Pennsylvania, just outside Philadelphia in Delaware County. Interboro School District encompasses approximately 11 square miles. The district is mad ...

Marple Newtown School District Marple Newtown School District (MNSD) is a public school district which serves Newtown Township and Marple Township in Delaware County, Pennsylvania. Marple Newtown School District encompasses approximately . According to 2000 federal census ...

* Penn-Delco School District * Radnor Township School District *

Ridley School District Ridley School District is a large, suburban public school district in southeastern Delaware County, Pennsylvania. It serves the residents of Ridley Township, and the boroughs of Ridley Park and Eddystone. Ridley School District encompasses app ...

* Rose Tree Media School District * Southeast Delco School District * Springfield School District *

Upper Darby School District Upper Darby School District (UDSD) is a large public school district of approximately 12,000 students in Upper Darby Township, Delaware County, Pennsylvania. It consists of an area including Upper Darby Township, Clifton Heights borough, and ...

Wallingford-Swarthmore School District Wallingford-Swarthmore School District is a midsized, suburban public school district in south-eastern Delaware County, Pennsylvania in the United States. It serves the boroughs of Swarthmore, Rose Valley and Rutledge, and the township of N ...

West Chester Area School District The West Chester Area School District serves the borough and surrounding townships of West Chester, Pennsylvania, United States. The other parts include the surrounding townships of East Bradford, East Goshen, Thornbury, West Goshen, West Whit ...

William Penn School District The William Penn School District is a large suburban, public school district located in Delaware County, Pennsylvania. It comprises eight elementary schools, one middle school, one alternative school, and one high school, based on two camp ...

Note that Delaware County Technical High School takes students from all of the county.

Charter schools

*Chester Community Charter School *Widener Partnership Charter School * Chester Charter Scholars Academy

Private schools

In 1963 the

Roman Catholic Archdiocese of Philadelphia The Roman Catholic Metropolitan Archdiocese of Philadelphia is a Latin Church ecclesiastical territory or diocese of the Catholic Church in southeastern Pennsylvania, in the United States. It covers the City and County of Philadelphia as well as ...

had 48 Catholic K-8/elementary schools in Delaware County with a total of 39,695 students, which was the highest ever enrollment. From 1971 to 2012, 20 of these schools closed, with ten of them closing from 2003 to 2012. By 2012 there were 28 Catholic K-8/elementary schools in Delaware County with a total of 8,291 students. One notable private school is Friends School Haverford.

Colleges and universities

* Cabrini College * Cheyney University * Eastern University *

Delaware County Community College Delaware County Community College (DCCC) is a public community college with campuses and facilities throughout Delaware and Chester Counties in Pennsylvania. DCCC was founded in 1967 and is accredited by the Middle States Commission on Higher E ...

(locations in Marple Township, Upper Darby and Sharon Hill) *

* Neumann University * Pendle Hill Quaker Center for Study and Contemplation *

Pennsylvania Institute of Technology Pennsylvania Institute of Technology (P.I.T.) is a private junior college and technical school in Upper Providence Township, Delaware County, Pennsylvania, near Media. The college, which typically enrolls between 450 and 850 students, is accredi ...

* Penn State Brandywine * Rosemont College *

Swarthmore College Swarthmore College ( , ) is a private liberal arts college in Swarthmore, Pennsylvania. Founded in 1864, with its first classes held in 1869, Swarthmore is one of the earliest coeducational colleges in the United States. It was established as ...

Villanova University Villanova University is a private Roman Catholic research university in Villanova, Pennsylvania. It was founded by the Augustinians in 1842 and named after Saint Thomas of Villanova. The university is the oldest Catholic university in Pennsy ...

Widener University Widener University is a private university in Chester, Pennsylvania. The university has three other campuses: two in Pennsylvania (Harrisburg and Exton) and one in Wilmington, Delaware. Founded as The Bullock School for Boys in 1821, the schoo ...

Williamson College of the Trades Williamson College of the Trades (formerly Williamson Free School of Mechanical Trades) is a private men's junior vocational college in Middletown Township, near Media, Pennsylvania. The school was founded on December 1, 1888, by Philadelphia ...

Adult education

* Haverford Adult School * Main Line School Night * Senior Community Services Lifelong Learning * Delaware County Literacy Council

Libraries

Transportation

Delaware County is bisected north to south by Blue Route Interstate 476, which connects

I-76 Interstate 76 may refer to: Interstate Highways in the United States * Interstate 76 (Colorado–Nebraska) * Interstate 76 (Ohio–New Jersey), running through Pennsylvania Video gaming * ''Interstate '76 ''Interstate '76'' is a vehicular c ...

just north of the extreme northern corner of the county to I-95, which parallels the

along the southeastern edge of the county. Delaware County is home to

SEPTA The Southeastern Pennsylvania Transportation Authority (SEPTA) is a regional public transportation authority that operates bus, rapid transit, commuter rail, light rail, and electric trolleybus services for nearly 4 million people in five c ...

's 69th Street Terminal in Upper Darby, and is served by the Norristown High Speed Line (P&W), two Red Arrow trolley lines (Routes 101 and 102), four Regional Rail Lines (the Airport Line, Wilmington/Newark Line, Media/Wawa Line, and

Paoli/Thorndale Line The Paoli/Thorndale Line, or R5 commonly known as the Main Line, is a SEPTA Regional Rail service running from Center City Philadelphia through Montgomery County and Delaware County to Thorndale in Chester County. It operates along the far eas ...

), and a host of bus routes. The western portion of

Philadelphia International Airport Philadelphia International Airport is the primary airport serving Philadelphia, Pennsylvania. The airport served 19.6 million passengers annually in 2021, making it the 21st busiest airport in the United States. The airport is located from t ...

is located in Delaware County, and the county hosts some airport-related commerce such as Philadelphia's UPS terminal and airport hotels.

Major roads and highways

* * * * * * * * * * * * * * * * *

Recreation

Parks

There is one Pennsylvania state park in Delaware County: *

County parks include: * Clayton Park & Golf Course * Glen Providence Park * Kent Park/Dog Park * Rose Tree Park * Smedley Park * Upland Park

Racing

Harrah's Philadelphia is a

harness racing Harness racing is a form of horse racing in which the horses race at a specific gait (a trot or a pace). They usually pull a two-wheeled cart called a sulky, or spider, or chariot occupied by a driver. In Europe, and less frequently in Austral ...

track and casino (i.e., "racino") located on the Chester, Pennsylvania waterfront. It is owned by Vici Properties and operated by

Caesars Entertainment Caesars Entertainment, Inc., formerly Eldorado Resorts, Inc., is an American hotel and casino entertainment company founded and based in Reno, Nevada that operates more than 50 properties. Eldorado Resorts acquired Caesars Entertainment Corporat ...

Sports

The city of Chester is home to the

Philadelphia Union The Philadelphia Union are an American professional soccer club based in Chester, Pennsylvania. The Union compete in Major League Soccer (MLS) as a member of the Eastern Conference. Founded on February 28, 2008, the club began playing in 2010 ...

Major League Soccer Major League Soccer (MLS) is a men's professional soccer league sanctioned by the United States Soccer Federation, which represents the sport's highest level in the United States. The league comprises 29 teams—26 in the U.S. and 3 in Cana ...

. The team plays at Subaru Park, a venue located at the base of the Commodore Barry Bridge. Delaware County is the traditional home of women's professional soccer in the Philadelphia area. The former

Philadelphia Charge The Philadelphia Charge was an American women's professional soccer team that played in the Women's United Soccer Association. The team played at Villanova Stadium on the campus of Villanova University near Philadelphia, Pennsylvania. Histo ...

of the defunct

Women's United Soccer Association The Women's United Soccer Association (WUSA) was the world's first women's soccer league in which all the players were paid as professionals. Founded in February 2000, the league began its first season in April 2001 with eight teams in the Un ...

played at Villanova Stadium, which is located on the campus of

. The

Philadelphia Independence The Philadelphia Independence was an American professional soccer club that was based in the Philadelphia suburb of Chester, Pennsylvania. The team joined Women's Professional Soccer as an expansion team in 2010 and played its home games at West ...

Women's Professional Soccer Women's Professional Soccer (WPS) was the top-level professional women's soccer league in the United States. It began play on March 29, 2009. The league was composed of seven teams for its first two seasons and fielded six teams for the 2011 sea ...

succeeded the Charge and played at Widener University's Leslie Quick Stadium in 2011. Delaware County is the home of one of oldest baseball leagues in the country, the Delco League, which at one time was known for featuring future, former, and even current major league players who were offered more money than their current teams would pay them. Every summer, Delaware County is home to the Delco Pro-Am, a basketball league consisting of current, future, and former NBA players as well as local standout players. Delaware County is also the former home of a

rugby league Rugby league football, commonly known as just rugby league and sometimes football, footy, rugby or league, is a full-contact sport played by two teams of thirteen players on a rectangular field measuring 68 metres (75 yards) wide and 112 ...

team called the

Aston Bulls The Aston Bulls were a rugby league football team based in Aston Township in Delaware County, Pennsylvania. The team played in the American National Rugby League (AMNRL), the United States' oldest competition, from 1998 until 2013. They were kno ...

, a member of the American National Rugby League. Darby was home to the

Hilldale Club The Hilldale Athletic Club (informally known as Darby Daisies) were an American professional Negro league baseball team based in Darby, Pennsylvania, west of Philadelphia. Established as a boys team in 1910, the Hilldales were developed by their ...

, the 1925 Colored World Series Champions.

Media

The county itself is serviced by several newspapers, most notably the ''News of Delaware County'', the ''

Delaware County Daily Times The ''Delaware County Daily Times'' is a daily newspaper published in the Primos section of Upper Darby Township, Pennsylvania in the United States. It is the only major newspaper in the state to be branded with a county name rather than a city. ...

'', ''The Suburban and Wayne Times'', and ''The Spirit'', the only minority owned newspaper serving Delaware County. The ''Philadelphia Inquirer'' also has a significant presence, reflecting Philadelphia's influence on Delaware County and the rest of the metro. ''Delaware County Magazine'' is the news magazine with the largest circulation in Delaware County, reaching over 186,000 homes.

Climate

Delaware County has two physical geographic regions: the

Piedmont it, Piemontese , population_note = , population_blank1_title = , population_blank1 = , demographics_type1 = , demographics1_footnotes = , demographics1_title1 = , demographics1_info1 = , demographics1_title2 ...

and the

Atlantic Coastal Plain The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe a ...

, Most of the county has a

humid subtropical climate A humid subtropical climate is a zone of climate characterized by hot and humid summers, and cool to mild winters. These climates normally lie on the southeast side of all continents (except Antarctica), generally between latitudes 25° and 40° ...

(''Cfa'') while some higher northern areas have a hot-summer

humid continental climate A humid continental climate is a climatic region defined by Russo-German climatologist Wladimir Köppen in 1900, typified by four distinct seasons and large seasonal temperature differences, with warm to hot (and often humid) summers and freez ...

(''Dfa''.). The

hardiness zone A hardiness zone is a geographic area defined as having a certain average annual minimum temperature, a factor relevant to the survival of many plants. In some systems other statistics are included in the calculations. The original and most wide ...

s are 7a and 7b.

Notes

References

External links

* Official website. * {{coord, 39.92, -75.40, display=title, type:adm2nd_region:US-PA_source:UScensus1990 1789 establishments in Pennsylvania Populated places established in 1789