Ada County
URL: https://knowledge.ivjn.us/en/places/id-ada-county.html

Ada County is a county in Idaho, United States, with county seat Boise.

## Administrative divisions

Ada County is a county in Idaho, United States; the county seat is Boise[^uscb2023].

## Basic facts

- State: [Idaho](https://knowledge.ivjn.us/en/places/idaho.html)
- County seat: Boise[^uscb2023]
- Division level: county[^uscb2023]

## Parent division

Located in [Idaho](https://knowledge.ivjn.us/en/places/idaho.html).

Updated: 2026-10-29

Relations:
- Located in: Idaho https://knowledge.ivjn.us/en/places/idaho.html
- Contains places: Meridian https://knowledge.ivjn.us/en/places/id-meridian.html
- Contains places: Boise https://knowledge.ivjn.us/en/places/id-boise.html

Mentioned in:
- Idaho https://knowledge.ivjn.us/en/places/idaho.html
- 州 https://knowledge.ivjn.us/en/places/id-eagle.html
- Eagle Foothills https://knowledge.ivjn.us/en/places/id-eagle-foothills.html
- Garden City https://knowledge.ivjn.us/en/places/id-garden-city.html
- Hidden Spring https://knowledge.ivjn.us/en/places/id-hidden-spring.html
- Kuna https://knowledge.ivjn.us/en/places/id-kuna.html
- 斯塔尔 https://knowledge.ivjn.us/en/places/id-star.html

Sources:
- Ada County (Wikipedia) https://en.wikipedia.org/wiki/Ada_County
- U.S. Census Bureau 2023 FIPS state and county codes https://www.census.gov/library/reference/code-lists/ansi.html