Area codes 815 and 779 are telephone

area codes A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. Telephone numbers are the addresses of participants in a telephone network, rea ...

for most of northern Illinois outside the Chicago and Quad Cities areas. It also serves the Joliet area and some of Chicago’s western and northwestern exurbs. 815 was one of the four original Illinois area codes set up in 1947. It was split in 1957, when most of its western portion, including most of the Illinois side of the Quad Cities, was combined with part of the northern portion of area code 217 to form

area code 309 Area code 309/861 is a telephone area code in the North American Numbering Plan (NANP) for the west-central part of the U.S. state of Illinois. Two hundred and one municipalities are included in the plan such as Bloomington, Canton, East Moline ...

.History of area code 309
/ref> In preparation of an

overlay area code In telecommunications, an area code overlay complex is a telephone numbering plan that assigns multiple area codes to a geographic numbering plan area (NPA). Area code overlays are implemented in territories of the North American Numbering Pla ...

(779), all calls from the 815 area needed to be dialed with an area code beginning on February 17, 2009. A month later, the 779 code was activated.

Service area

* Adeline *

Amboy Amboy may refer to: Places * Amboy, Córdoba, village in Calamuchita Department, Córdoba province, Argentina United States * Amboy Crater, feature in Mojave National Preserve, California Settled U.S. places * Amboy, California * Amboy, Ge ...

* Andres * Apple River * Argyle * Aroma Park * Ashkum *

Ashton Ashton may refer to: Names *Ashton (given name) *Ashton (surname) Places Australia * Ashton, Elizabeth Bay, a heritage-listed house in Sydney, New South Wales *Ashton, South Australia Canada *Ashton, Ontario New Zealand * Ashton, New Zealand ...

* Baileyville * Ballou * Belvidere * Bonfield * Bourbonnais * Braceville * Bradley * Braidwood * Brush Point *

Buckingham Buckingham ( ) is a market town in north Buckinghamshire, England, close to the borders of Northamptonshire and Oxfordshire, which had a population of 12,890 at the 2011 Census. The town lies approximately west of Central Milton Keynes, sou ...

* Buffalo Grove * Bull Valley * Byron *

Caledonia Caledonia (; ) was the Latin name used by the Roman Empire to refer to the part of Great Britain () that lies north of the River Forth, which includes most of the land area of Scotland. Today, it is used as a romantic or poetic name for all ...

* Capron * Carbon Hill *

Cedar Point Cedar Point is a amusement park located on a Lake Erie peninsula in Sandusky, Ohio, United States. Opened in 1870, it is considered the second-oldest operating amusement park in the U.S. behind Lake Compounce. Cedar Point is owned and op ...

* Cedarville * Chadwick * Chana * Channahon * Cherry Valley *

Clifton Clifton may refer to: People *Clifton (surname) *Clifton (given name) Places Australia * Clifton, Queensland, a town **Shire of Clifton *Clifton, New South Wales, a suburb of Wollongong *Clifton, Western Australia Canada *Clifton, Nova Scotia ...

* Coal City * Coleta * Coltonville *

Compton Compton may refer to: Places Canada * Compton (electoral district), a former Quebec federal electoral district * Compton (provincial electoral district), a former Quebec provincial electoral district now part of Mégantic-Compton * Compton, Que ...

* Coral * Cortland * Crest Hill * Creston * Crystal Lake * Crystal Lawns * Dakota * Dana * Danforth *

Davis Davis may refer to: Places Antarctica * Mount Davis (Antarctica) * Davis Island (Palmer Archipelago) * Davis Valley, Queen Elizabeth Land Canada * Davis, Saskatchewan, an unincorporated community * Davis Strait, between Nunavut and Gre ...

* Davis Junction * Daysville * Deer Grove * DeKalb * Diamond *

Dixon Dixon may refer to: Places International * Dixon Entrance, part of the Inside Passage between Alaska and British Columbia Canada * Dixon, Ontario United States * Dixon, California * Dixon, Illinois * Dixon, Greene County, Indiana * Dixon, Indi ...

* Durand *

Dwight Dwight may refer to: People * Dwight (given name) * Dwight D. Eisenhower (1890–1969), 34th president of the United States and former military officer *New England Dwight family of American educators, military and political leaders, and authors * ...

* Earlville * East Brooklyn *

East Dubuque East Dubuque is a city in Jo Daviess County, Illinois, Jo Daviess County, Illinois, United States. The population was 1,505 at the 2020 census, down from 1,704 in 2010. East Dubuque is located alongside the Mississippi River. Across the river is t ...

Egan Egan may refer to: People * Egan (surname) * Egan (given name) Places in the United States * Egan, Illinois, an unincorporated community * Egan, Louisiana, an unincorporated community and census-designated place * Egan, South Dakota, a city * Eg ...

* Eleroy * Elizabeth *

Elwood Elwood may refer to any one of the following:: Places ;In Australia *Elwood, Victoria ;In the United States of America *Elwood, Illinois *Elwood, Indiana *Elwood, Kansas * Elwood, Missouri *Elwood, Nebraska * Elwood-Magnolia, New Jersey *Elwood, N ...

* Esmond * Essex * Fairdale * Fairmont * Flagg Center * Forreston * Frankfort * Frankfort Square * Franklin Grove *

Freeport Freeport, a variant of free port, may refer to: Places United States *Freeport, California *Freeport, Florida *Freeport, Illinois *Freeport, Indiana *Freeport, Iowa *Freeport, Kansas *Freeport, Maine, a New England town **Freeport (CDP), Maine, the ...

* Fulton *

Galena Galena, also called lead glance, is the natural mineral form of lead(II) sulfide (PbS). It is the most important ore of lead and an important source of silver. Galena is one of the most abundant and widely distributed sulfide minerals. It cryst ...

* Genoa * Garden Prairie * Gardner * German Valley * Gilman * Godley *

Grand Detour Grand Detour is an unincorporated census-designated place in Ogle County, Illinois, United States. As of the 2010 census, its population was 429. The village is named after an odd turn in the Rock River, which flows north past the village, rather ...

* Grand Ridge * Grant Park * Granville *

Greenwood Green wood is unseasoned wood. Greenwood or Green wood may also refer to: People * Greenwood (surname) Settlements Australia * Greenwood, Queensland, a locality in the Toowoomba Region * Greenwood, Western Australia, a suburb of Perth C ...

* Haldane * Hanover * Harmon * Harrison *

Harvard Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher le ...

* Hebron * Herscher * Holiday Hills * Homer Glen * Hillcrest * Hinckley * Hopkins Park * Ingalls Park * Irwin * Johnsburg * Joliet * Kangley * Kankakee * Kent *

Kings Kings or King's may refer to: *Monarchs: The sovereign heads of states and/or nations, with the male being kings *One of several works known as the "Book of Kings": **The Books of Kings part of the Bible, divided into two parts **The ''Shahnameh'' ...

Kingston Kingston may refer to: Places * List of places called Kingston, including the five most populated: ** Kingston, Jamaica ** Kingston upon Hull, England ** City of Kingston, Victoria, Australia ** Kingston, Ontario, Canada ** Kingston upon Thames, ...

Kinsman A kinsman is a male relative (see kinship). The term kinsman (or plural kinsmen) may also refer to: Places in the United States *Kinsman, Illinois *Kinsman, Ohio *Kinsman Township, Trumbull County, Ohio *Kinsman Mountain, in the White Mountains o ...

* Kirkland * Lake Holiday * Lake Summerset * Lakemoor *

Lakewood Lakewood may refer to: Places Australia * Lakewood, Western Australia, an abandoned town in Western Australia Canada * Lakewood, Edmonton, Alberta * Lakewood Suburban Centre, Saskatoon, Saskatchewan Philippines * Lakewood, Zamboanga del S ...

* Lakewood Shores * Lanark * LaSalle * Leaf River *

Lee Lee may refer to: Name Given name * Lee (given name), a given name in English Surname * Chinese surnames romanized as Li or Lee: ** Li (surname 李) or Lee (Hanzi ), a common Chinese surname ** Li (surname 利) or Lee (Hanzi ), a Chinese ...

* Leland * Lena * Leonore * Lindenwood *

Lisbon Lisbon (; pt, Lisboa ) is the capital and largest city of Portugal, with an estimated population of 544,851 within its administrative limits in an area of 100.05 km2. Grande Lisboa, Lisbon's urban area extends beyond the city's administr ...

* Lockport * Lostant *

Loves Park Loves Park is a city in Boone and Winnebago counties in the U.S. state of Illinois. Most of the city is in Winnebago County, with a tiny sliver in the east located in Boone County. The population was 23,996 at the 2010 census, up from 20,044 in ...

* Lyndon * Machesney Park * Malta * Manhattan *

Manteno Manteno is a village in Kankakee County, Illinois, United States. The population was 9,204 at the 2010 census, up from 6,414 at the 2000 census. It is part of the Kankakee-Bourbonnais-Bradley Metropolitan Statistical Area. History Origins ...

* Maple Park * Marengo *

Marseilles Marseille ( , , ; also spelled in English as Marseilles; oc, Marselha ) is the prefecture of the French department of Bouches-du-Rhône and capital of the Provence-Alpes-Côte d'Azur region. Situated in the camargue region of southern Franc ...

Mazon Mazon may refer to: Places in the United States * Mazon, Illinois, a village * Mazon Creek fossils * Mazon River * Mazon station, Mazon, Illinois * Mazon Township, Grundy County, Illinois Organizations * MAZON: A Jewish Response to Hunger, a no ...

* McCullom Lake * McHenry * Mendota * Menominee * Meriden * Millbrook * Milledgeville * Millington *

Minooka Minooka is a village (Illinois), village in Grundy County, Illinois, Grundy, Kendall County, Illinois, Kendall, and Will County, Illinois, Will counties, Illinois, United States. The population was 10,924 at the United States Census 2010, 2010 cen ...

Mokena Mokena is a village in Will County, Illinois, United States. The population was 19,887 at the 2020 census. The Census Bureau's 2019 estimate found that the population had increased to 20,159. Etymology Mokena is a name apparently derived from a ...

* Momence * Monee * Monroe Center * Morris *

Morrison Morrison may refer to: People * Morrison (surname), people with the Scottish surname Morrison * Morrison Heady (1829–1915), American poet * Morrison Mann MacBride (1877–1938), Canadian merchant Places in the United States * Morrison, Colorad ...

Mount Carroll Mount Carroll is a city in Carroll County, Illinois, United States. It is the Carroll County seat. The population was 1479 at the 2020 census. Due to its elevation and northwesterly location, Mount Carroll is subject to unusually cold winter wea ...

* Mount Morris * Naplate * Nelson * New Milford *

New Lenox New Lenox is a village in central Will County, Illinois, United States. It is a southwestern suburb of Chicago and an eastern suburb of Joliet. The village population was 27,214 as of 2020. New Lenox has schools like Lincoln-Way West High School ...

* Newark * Nora * North Utica * Norway * Odell * Oglesby * Onarga * Oneco * Orangeville * Oregon *

Ottawa Ottawa (, ; Canadian French: ) is the capital city of Canada. It is located at the confluence of the Ottawa River and the Rideau River in the southern portion of the province of Ontario. Ottawa borders Gatineau, Quebec, and forms the core ...

* Paw Paw * Paynes Point * Pearl City * Pecatonica *

Peotone Peotone () is a village in Will County, Illinois, United States. The population was 4,142 at the 2010 census, an increase from 3,385 in 2000. The city is about south of Chicago. The village is home to the Peotone High School Blue Devils. Hist ...

* Peru * Plainfield *

Polo Polo is a ball game played on horseback, a traditional field sport and one of the world's oldest known team sports. The game is played by two opposing teams with the objective of scoring using a long-handled wooden mallet to hit a small hard ...

* Pontiac * Poplar Grove * Prairie Grove * Preston Heights * Princeton * Prophetstown *

Ransom Ransom is the practice of holding a prisoner or item to extort money or property to secure their release, or the sum of money involved in such a practice. When ransom means "payment", the word comes via Old French ''rançon'' from Latin ''red ...

* Reddick *

Richmond Richmond most often refers to: * Richmond, Virginia, the capital of Virginia, United States * Richmond, London, a part of London * Richmond, North Yorkshire, a town in England * Richmond, British Columbia, a city in Canada * Richmond, California, ...

* Ridott * Ringwood *

Ritchie Ritchie may refer to: People Surname *Adele Ritchie (1874–1930), singer – comic opera, musical comedy and vaudeville *Albert Ritchie (1876–1936), governor of Maryland 1920 to 1935 *Alistair Ferguson Ritchie (1890–1954), crossword compiler ...

* Rochelle * Rock City * Rock Falls * Rockdale * Rockford * Rockton * Rodden * Romeoville * Roscoe *

Rutland Rutland () is a ceremonial county and unitary authority in the East Midlands, England. The county is bounded to the west and north by Leicestershire, to the northeast by Lincolnshire and the southeast by Northamptonshire. Its greatest len ...

St. Anne According to Christianity, Christian apocryphal and Islamic tradition, Saint Anne was the mother of Mary, mother of Jesus, Mary and the maternal grandmother of Jesus. Mary's mother is not named in the Gospel#Canonical gospels, canonical gospels. ...

* Sandwich * Savanna * Scales Mound * Seneca *

Serena Serena most commonly refers to: * Serena Williams (born 1981), professional tennis player Serena may also refer to: Arts, entertainment, and media * Serena (genre), 13th-century Occitan poetic genre * ''Serena'' (1962 film), a British crime t ...

* Seward * Shabbona * Shannon *

Sheridan Sheridan may refer to: People Surname *Sheridan (surname) *Philip Sheridan (1831–1888), U.S. Army general after whom the Sheridan tank is named *Richard Brinsley Sheridan (1751–1816), Irish playwright (''The Rivals''), poet and politician ...

Shirland Shirland is a former pit village in Derbyshire, England. Together with the neighbouring villages of Higham, Stretton and Stonebroom, it forms part of the civil parish of Shirland and Higham, which had a population of 4,802 at the 2011 Census ...

* Shorewood * Somonauk *

South Beloit South Beloit, is a city located in Winnebago County, Illinois, USA. It is part of the Rockford Metropolitan Area, but it is also a suburban extension of Beloit, Wisconsin. South Beloit,is directly along the border of smaller cities and towns no ...

* South Wilmington * Spring Grove * Spring Valley *

Sterling Sterling may refer to: Common meanings * Sterling silver, a grade of silver * Sterling (currency), the currency of the United Kingdom ** Pound sterling, the primary unit of that currency Places United Kingdom * Stirling, a Scottish city w ...

Steward Steward may refer to: Positions or roles * Steward (office), a representative of a monarch * Steward (Methodism), a leader in a congregation and/or district * Steward, a person responsible for supplies of food to a college, club, or other ins ...

* Stillman Valley *

Stockton Stockton may refer to: Places Australia * Stockton, New South Wales * Stockton, Queensland, a locality in the Cassowary Coast Region New Zealand *Stockton, New Zealand United Kingdom *Stockton, Cheshire *Stockton, Norfolk *Stockton, Chirbu ...

Streator Streator is a city in LaSalle County, Illinois, LaSalle and Livingston County, Illinois, Livingston counties in the U.S. state of Illinois. The city is situated on the Vermilion River (Illinois River tributary), Vermilion River approximately so ...

* Sublette * Sun River Terrace * Sycamore * Symerton * Tampico * Thomson * Timberlane * Toluca *

Tonica Tonica is a village in LaSalle County, Illinois, United States. The population was 749 at the 2020 census, down from 768 at the 2010 census. It is part of the Ottawa Micropolitan Statistical Area. History Tonica was originally a small haml ...

* Triumph *

Troy Grove Troy Grove is a village in LaSalle County, Illinois, United States. The population was 225 at the 2020 census, down from 250 at the 2010 census. It is part of the Ottawa, IL Micropolitan Statistical Area. Troy Grove is notable as the birthplace ...

* Union * Union Hill * Verona *

Waddams Grove Waddams Grove, previously known as Wadam's, Waddam's Grove, and Sada, is an unincorporated community in the Stephenson County township of West Point, Illinois, United States. Waddams Grove was the first settlement in Stephenson County. It is loc ...

* Walnut * Warren * Waterman *

Watseka Watseka or Watchekee (c. 1810–1878) was a Potawatomi Native American woman, born in Illinois, and named for the heroine of a Potawatomi legend. Her uncle was Tamin, the chief of the Kankakee Potawatomi Indians. She was also known by the ...

* West Brooklyn * Wenona * Wilmington * Wilton * Wilton Center *

Winnebago Winnebago can refer to: * The exonym of the Ho-Chunk tribe of Native North Americans with reservations in Nebraska, Iowa, and Wisconsin ** Winnebago Tribe of Nebraska, a federally recognized tribe group in the state ** The Winnebago language of the ...

* Winslow * Wonder Lake * Wonder Lake (CDP) * Woodstock * Woosung

References

External links

Area Code Overlay Approved for 815 Area Code
- general information from AT&T, the RBOC for the area code
List of exchanges from AreaCodeDownload.com, 815 Area Code

{{Coord, 40.195659, N, 89.516602, W, region:US-IL, display=title Telecommunications-related introductions in 1947 Telecommunications-related introductions in 2007 815 and 779 815 and 779

Service area

See also

References

External links