Ada County , Idaho

Ada County: County in Idaho, United States

Ada County locator map
Location of Ada County on Idaho map.

About

Ada County is a county located in the U.S. state of Idaho. As of the 2010 census, the population was 392,365 and a population density of 143 people per km². After 9 years in 2019 county had an estimated population of 481,587 inhabitants. Its county seat is Boise. The county was created 156 years ago in 1864.

Geography

Ada County is located at 43°27'4"N 116°14'28"W (43.4511200, -116.2410900). It has 5 neighbors: Elmore County, Boise County, Canyon County, Gem County and Owyhee County.

James A. McClure Federal Bldg %26 U.S. Courthouse image
James A. McClure Federal Bldg %26 U.S. Courthouse

The largest city of Ada County is Boise with a population of 228,959. Other cities include, Meridian population 114,161, Eagle population 29,796, Kuna population 22,257 and Garden City population 11,969. See all Ada County cities & populated places.

James A. McClure Federal Bldg %26 U.S. Courthouse image

Ada County map

Ada County Quick Facts

Population : 481,587 (2019)
Country : United States of America
State : Idaho (United States)
Area : 2746 km2
Water as percent of area : 0.7%
Land as percent of area : 99.3%
Named for : Ada Riggs
Altitude : 3,179 feet / 969 meters
Capital : Boise
Establishment : December 12, 1864
Time Zone : America/Boise
Local time : 09:10:57 (14th June 2021)
Density : 175 Pop. per km² as of 2019
Population growth : 18.53% (2010-2019)

Ada County has 5 neighbours.

  • Boise

Demographics

The population of Ada County increased by 18.53% in 9 years.

Year Population % Change Method
2010 392,365 - census
2011 401,262 2.22% estimation process
2012 408,862 1.86% estimation process
2013 415,951 1.7% estimation process
2014 425,471 2.24% estimation process
2015 432,862 1.71% estimation process
2016 444,486 2.62% estimation process
2017 456,548 2.64% estimation process
2018 468,764 2.61% estimation process
2019 481,587 2.66% estimation process

Ada, Ada Kun, Ada Kūn, Ada konderria, Ada maakond, Ada megye, Ada srjan, Adan piirikunta, Comitatul Ada, Comte d'Ada, Comte dAda, Comté d'Ada, Comté dAda, Condado de Ada, Condado han Ada, Contea di Ada, Ehjda, Eidas apgabals, Ejda, Hrabstwo Ada, Okrug Ejda, Quan Ada, Quận Ada, ada ka'unti, ai da xian, eida jun, mqatʿt ada, shhrstan ada aydahw, Ада, Ейда, Округ Ејда, Эйда, Ադա շրջան, ادا کاؤنٹی، اڈاہو, ایڈا کاؤنٹی، ایڈاہو, شهرستان آدا، آیداهو, مقاطعة أدا, আডা কাউন্টি, エイダ郡, 埃達縣

Ada County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Ada County.

City Name Population Title
Boise 228,959 City in and state capital of Idaho, United States
Meridian 114,161 City in Ada County, Idaho, United States
Eagle 29,796 City in Ada County, Idaho, United States
Kuna 22,257 City in Ada County, Idaho, United States
Garden City 11,969 City in Ada County, Idaho, United States
Star 10,532 City in Ada County, Idaho, United States

Idaho Other Counties (more counties)

County Name Population Title
Idaho 1,787,065 State of the United States of America
Canyon County 229,849 County in Idaho, United States
Boise 228,959 City in and state capital of Idaho, United States
Kootenai County 165,697 County in Idaho, United States
Bonneville County 119,062 County in Idaho, United States
Meridian 114,161 City in Ada County, Idaho, United States
Nampa 99,277 City in Canyon County, Idaho, United States
Bannock County 87,808 County in Idaho, United States
Twin Falls County 86,878 County in Idaho, United States
Idaho Falls 62,888 City in and the county seat of Bonneville County, Idaho, United States
Caldwell 58,481 City in and county seat of Canyon County, Idaho, United States
Pocatello 56,637 City in Idaho
Coeur d'Alene 52,414 City in Idaho, United States
Twin Falls 50,197 City in Twin Falls County, Idaho, United States
Bingham County 46,811 County in Idaho, United States
Bonner County 45,739 County in Idaho, United States

Next page