Arco is a city in Butte County,

Idaho Idaho ( ) is a U.S. state, state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Monta ...

, United States. The population was 879 as of the

2020 United States census The United States census of 2020 was the twenty-fourth decennial United States census. Census Day, the reference day used for the census, was April 1, 2020. Other than a pilot study during the 2000 census, this was the first U.S. census to off ...

, down from 995 at the 2010 census. Arco is the

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 ...

and largest city in Butte County.

History

Originally known as Root Hog, the original town site was south at the junction of two stagecoach lines (Blackfoot-Wood River and Blackfoot-Salmon). A suspension bridge that crossed the Big Lost River funneled traffic through the settlement. The town leaders applied to the U.S. Post Office for the town name of "Junction". The

Postmaster General A Postmaster General, in Anglosphere countries, is the chief executive officer of the postal service of that country, a ministerial office responsible for overseeing all other postmasters. The practice of having a government official responsib ...

thought the name too common and suggested that the place be named Arco for Georg von Arco (1869–1940) of

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwee ...

who was visiting Washington, D.C., at the time. Georg von Arco was an inventor and a pioneer in the field of radio transmission and would become the lead engineer of

Telefunken Telefunken was a German radio and television apparatus company, founded in Berlin in 1903, as a joint venture of Siemens & Halske and the ''Allgemeine Elektrizitäts-Gesellschaft'' (AEG) ('General electricity company'). The name "Telefunken" ap ...

, a German company founded in 1903 that produced

radio Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a tr ...

vacuum tube A vacuum tube, electron tube, valve (British usage), or tube (North America), is a device that controls electric current flow in a high vacuum between electrodes to which an electric potential difference has been applied. The type known as ...

s. The town later moved four miles southeast when the stage station was moved to Webb Springs at Big Southern Butte. When the Oregon Short Line Railroad arrived from Blackfoot in 1901 the stage lines became obsolete and the town of Arco moved northwest to its present site. Arco was the first community in the world ever to be lit by electricity generated solely by

nuclear power Nuclear power is the use of nuclear reactions to produce electricity. Nuclear power can be obtained from nuclear fission, nuclear decay and nuclear fusion reactions. Presently, the vast majority of electricity from nuclear power is produced b ...

. This occurred for about an hour on July 17, 1955, powered by

Argonne National Laboratory Argonne National Laboratory is a science and engineering research national laboratory operated by UChicago Argonne LLC for the United States Department of Energy. The facility is located in Lemont, Illinois, outside of Chicago, and is the l ...

’s

BORAX-III The BORAX Experiments were a series of safety experiments on boiling water nuclear reactors conducted by Argonne National Laboratory in the 1950s and 1960s at the National Reactor Testing Station in eastern Idaho.

reactor at the nearby National Reactor Testing Station (NRTS), now the

Idaho National Laboratory Idaho National Laboratory (INL) is one of the national laboratories of the United States Department of Energy and is managed by the Battelle Energy Alliance. While the laboratory does other research, historically it has been involved with nu ...

. NRTS made further history on January 3, 1961, when the SL-1 reactor was destroyed through an operator maintenance error, with the ensuing steam explosion causing the deaths of all three personnel present. It was the world's first and the United States' only fatal reactor accident.

Economy

The town's economic base is primarily derived from the

(formerly the Idaho National Engineering Laboratory or INEL), agricultural products, and recreation in the Lost River Valley.

Highways

US 20 U.S. Route 20 or U.S. Highway 20 (US 20) is an east–west United States Numbered Highway that stretches from the Pacific Northwest east to New England. The "0" in its route number indicates that US 20 is a major coast-to-coast route. ...

— to Mountain Home (west) and

Idaho Falls Idaho Falls ( Shoshoni: Dembimbosaage) is a city in and the county seat of Bonneville County, Idaho, United States. It is the state's largest city outside the Boise metropolitan area. As of the 2020 census, the population of Idaho Falls was 6 ...

(east) *

US 26 — to

Shoshone The Shoshone or Shoshoni ( or ) are a Native American tribe with four large cultural/linguistic divisions: * Eastern Shoshone: Wyoming * Northern Shoshone: southern Idaho * Western Shoshone: Nevada, northern Utah * Goshute: western Utah, easte ...

(west) and

Blackfoot The Blackfoot Confederacy, ''Niitsitapi'' or ''Siksikaitsitapi'' (ᖹᐟᒧᐧᒣᑯ, meaning "the people" or "Blackfoot language, Blackfoot-speaking real people"), is a historic collective name for linguistically related groups that make up t ...

(east) *

US 93 — to Challis (north) and Twin Falls (south)

Geography

Arco is located along the

Big Lost River The Big Lost River is a major river in the U.S. state of Idaho, about long.U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map, accessed May 4, 2011 Description The river starts in the Rocky Mountai ...

and is a gateway to the

Lost River Range The Lost River Range is a high mountain range of the Rocky Mountains, located in Central Idaho, in the Northwestern United States. It runs southeast for approximately from the Salmon River near the community of Challis to the Snake River Val ...

from the

Snake River Plain The Snake River cutting through the plain leaves many canyons and Canyon#List of gorges">gorges, such as this one near Twin Falls, Idaho The Snake River Plain is a geologic feature located primarily within the U.S. state of Idaho. It stre ...

. Craters of the Moon National Monument is located along U.S. Route 20, southwest of the city. The

(INL) is located east of Arco. Arco Peak, located two mile north of the community at an elevation of 7547 feet, rises 2220 feet above the city.''Arco North, ID,'' 7.5 Minute topographic Quadrangle, USGS, 1972 According to the

United States 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 th ...

, the city has a total area of , of which, is land and is water. In town, the most striking physical feature is Number Hill, a rocky hill with numbers painted all over it. Butte County High School has a tradition of each class since 1920 painting its graduation year on the face of hill.Gallery Fifty Eight: Man and nature -- Number Hill, Arco, Idaho, 2010
Retrieved 2014-09-28. Photo of Number Hill shown.

Climate

Arco has 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 ...

( Köppen ''Dfa''), barely wet enough to avoid a

semi-arid A semi-arid climate, semi-desert climate, or steppe climate is a dry climate sub-type. It is located on regions that receive precipitation below potential evapotranspiration, but not as low as a desert climate. There are different kinds of semi- ...

classification (''BSk'').

Demographics

2010 census

As of the

2010 United States Census The United States census of 2010 was the twenty-third United States national census. National Census Day, the reference day used for the census, was April 1, 2010. The census was taken via mail-in citizen self-reporting, with enumerators serving ...

of 2010, there were 995 people, 417 households, and 254 families living in the city. The

population density Population density (in agriculture: standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geographical term.Matt RosenberPopu ...

was . There were 504 housing units at an average density of . The

racial makeup A race is a categorization of humans based on shared physical or social qualities into groups generally viewed as distinct within a given society. The term came into common usage during the 1500s, when it was used to refer to groups of variou ...

of the city was 95.1% White, 0.3% Native American, 0.3% Asian, 1.7% from other races, and 2.6% from two or more races. Hispanic or Latino of any race were 3.0% of the population. There were 417 households, of which 30.2% had children under the age of 18 living with them, 44.4% 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, 13.2% had a female householder with no husband present, 3.4% had a male householder with no wife present, and 39.1% were non-families. 34.1% of all households were made up of individuals, and 15.9% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 3.03. The median age in the city was 41.2 years. 26.9% of residents were under the age of 18; 6.1% were between the ages of 18 and 24; 21.6% were from 25 to 44; 26.1% were from 45 to 64; and 18.9% were 65 years of age or older. The gender makeup of the city was 51.8% male and 48.2% female.

2000 census

As of the

2000 United States Census The United States census of 2000, conducted by the Census Bureau, determined the resident population of the United States on April 1, 2000, to be 281,421,906, an increase of 13.2 percent over the 248,709,873 people enumerated during the 1990 c ...

of 2000, there were 1,026 people, 427 households, and 269 families living in the city. The population density was . There were 505 housing units at an average density of . The

of the city was 95.13% White, 0.49% African American, 1.36% Native American, 1.75% from other races, and 1.27% from two or more races. Hispanic or Latino of any race were 3.61% of the population. There were 427 households, out of which 29.3% had children under the age of 18 living with them, 48.2% were

living together, 11.9% had a female householder with no husband present, and 37.0% were non-families. 34.0% of all households were made up of individuals, and 15.2% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 3.04. In the city, the population was spread out, with 27.9% under the age of 18, 6.8% from 18 to 24, 22.4% from 25 to 44, 25.8% from 45 to 64, and 17.1% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 91.8 males. For every 100 females age 18 and over, there were 90.7 males. The median income for a household in the city was $27,993, and the median income for a family was $34,688. Males had a median income of $34,688 versus $17,386 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 city was $14,744. About 19.6% of families and 22.6% 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 33.8% of those under age 18 and 15.8% of those age 65 or over.

Notable residents

C. A. Bottolfsen Clarence Alfred Bottolfsen (October 10, 1891July 18, 1964) was an American publisher and politician from Idaho, a member of the Idaho Republican Party. He served as the state's 17th and 19th governor, from 1939 to 1941 and again from 1943 to 194 ...

Governor of Idaho A governor is an administrative leader and head of a polity or political region, ranking under the head of state and in some cases, such as governors-general, as the head of state's official representative. Depending on the type of political r ...

, (1939–1941, 1943–1945) * Warren Jones — justice,

Idaho Supreme Court The Idaho Supreme Court is the state supreme court of Idaho and is composed of the chief justice and four associate justices. The decisions of the Idaho Supreme Court are binding on all other Idaho state courts. The only court that may revers ...

valedictorian Valedictorian is an academic title for the highest-performing student of a graduating class of an academic institution. The valedictorian is commonly determined by a numerical formula, generally an academic institution's grade point average (GPA) ...

of Butte County High School in 1961

References

External links

1949 Life Magazine Photos
{{authority control Cities in Butte County, Idaho Cities in Idaho County seats in Idaho 1955 establishments in Idaho Articles containing video clips