Ada County, Idaho

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Ada County, Idaho
County
Ada County
James A. McClure Federal Bldg & U.S. Courthouse.JPG
James A. McClure Federal Building and U.S. Courthouse in Boise, Idaho.
Map of Idaho highlighting Ada County
Location in the U.S. state of Idaho
Map of the United States highlighting Idaho
Idaho's location in the U.S.
Founded December 22, 1864
Named for Ada Riggs, first pioneer child born in county
Seat Boise
Largest city Boise
Area
 • Total 1,060 sq mi (2,745 km2)
 • Land 1,053 sq mi (2,727 km2)
 • Water 7.9 sq mi (20 km2), 0.7%
Population (est.)
 • (2017) 456,849[1]
 • Density 434/sq mi (168/km2)
Congressional districts 1st, 2nd
Time zone Mountain: UTC−7/−6
Website www.adaweb.net
Footnotes: County Code: 1A

Ada County is a county in the U.S. state of Idaho. As of the 2010 Census, 392,365 people lived in the county.[2] That was more than any other county in Idaho. The county seat and largest city is Boise.[3] Boise is also the state capital.[4]

Communities[change | change source]

Cities[change | change source]

Census-designated place[change | change source]

References[change | change source]

  1. "American FactFinder". U.S. Census Bureau. March 23, 2018. Retrieved March 23, 2018. 
  2. "State & County QuickFacts". United States Census Bureau. Retrieved June 28, 2014. 
  3. "Find a County". National Association of Counties. Retrieved 2011-06-07. 
  4. Idaho Department of Commerce (2011). "Facts About Idaho". Idaho Department of Commerce. Retrieved 2011-11-10.