Ada County, Idaho
county in Idaho, United States
Ada County is a county in the U.S. state of Idaho. As of the 2020 Census, 494,967 people lived in the county.[1] That was more than any other county in Idaho. The county seat and largest city is Boise.[2] Boise is also the state capital.[3]
Ada County | |
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James A. McClure Federal Building and U.S. Courthouse in Boise, Idaho. | |
![]() Location within the U.S. state of Idaho | |
![]() Idaho's location within the U.S. | |
Coordinates: 43°27′N 116°14′W / 43.45°N 116.24°W | |
Country | ![]() |
State | ![]() |
Founded | December 22, 1864 |
Named for | Ada Riggs |
Seat | Boise |
Largest city | Boise |
Area | |
• Total | 1,060 sq mi (2,700 km2) |
• Land | 1,053 sq mi (2,730 km2) |
• Water | 7.9 sq mi (20 km2) 0.7% |
Population (2020) | |
• Total | 494,967 |
• Density | 470/sq mi (180/km2) |
Time zone | UTC−7 (Mountain) |
• Summer (DST) | UTC−6 (MDT) |
Congressional districts | 1st, 2nd |
Website | www |
County Code: 1A |
Communities
changeCities
changeCensus-designated places
changeReferences
change- ↑ "QuickFacts: Ada County, Idaho". United States Census Bureau. Retrieved September 25, 2023.
- ↑ "Find a County". National Association of Counties. Retrieved 2011-06-07.
- ↑ Idaho Department of Commerce (2011). "Facts About Idaho". Idaho Department of Commerce. Archived from the original on 2011-09-03. Retrieved 2011-11-10.