Ada County Map, Idaho
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Ada County, Idaho
Ada County sits in the heart of Idaho’s Treasure Valley. Boise, the state capital, anchors the county and gives it a hip urban vibe. The Boise River cuts through town, lined with a popular greenbelt for biking and jogging.
Foothills rise up north of the city, crisscrossed with hiking trails. It’s a fast-growing area, attracting tech companies and Californians fleeing high costs. Locals complain about the growth but secretly love the new restaurants.
The suburbs sprawl out into former farmland. Meridian and Eagle are booming. Downtown Boise has a surprising food scene and decent nightlife. BSU’s blue football field is a point of pride. You can ski, mountain bike, and fly fish all on the same day here.
| Category | Details |
|---|---|
| County Name | Ada County |
| County Seat | Boise |
| Population | 550,000 |
| Cities, Towns, and Communities | Boise, Meridian, Eagle, Kuna, Garden City, Star, and more |
| Interstates and Highways | Interstate 84, U.S. Route 20, U.S. Route 26, Idaho State Highway 55 |
| FIPS Code | 16-001 |
| Total Area | 1,079 square miles (land: 1,036 sq mi; water: 43 sq mi) |
| Adjacent Counties | Gem County (Northwest), Boise County (Northeast), Elmore County (East), Owyhee County (South), Canyon County (West) |
| Time Zone | Mountain Time Zone |
| State | Idaho |
| Coordinates | 43.6° N, 116.2° W |
| Etymology | Named after Ada Riggs, a pioneer woman who was a prominent figure in early Idaho history. |
| Major Landmarks | Boise River Greenbelt, Idaho State Capitol, Boise National Forest, Julia Davis Park, Old Idaho Penitentiary |
| Website | Ada County Website |
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