Fremont County, Idaho
Fremont County is tucked into the eastern corner of Idaho, where potato fields gradually give way to rugged mountains. Island Park, a long volcanic valley, is one of the county’s biggest attractions.
This county is a true playground for outdoor enthusiasts, offering opportunities for fishing, hiking, snowmobiling, and more. Yellowstone National Park is just next door, while the Teton Mountains rise to the east with spectacular views. Harriman State Park is especially well known for its excellent fly fishing.
Ashton, famous for its dog sled races, has a charming step-back-in-time atmosphere. St. Anthony, the county seat, is centered around farming and ranching. Fremont County also has a strong Mormon heritage that continues to influence the area’s communities and culture.
| Category | Details |
|---|---|
| County Name | Fremont County |
| County Seat | St. Anthony |
| Population | 15,500 |
| Cities, Towns, and Communities | St. Anthony, Ashton, Island Park, and more |
| Interstates and Highways | U.S. Route 20, Idaho State Highway 87, Idaho State Highway 32 |
| FIPS Code | 16-043 |
| Total Area | 2,384 square miles (land: 2,369 sq mi; water: 15 sq mi) |
| Adjacent Counties | Clark County (West), Jefferson County (Southwest), Madison County (South), Teton County (South), Teton County, Wyoming (East), Gallatin County, Montana (North), Madison County, Montana (North), Beaverhead County, Montana (Northwest) |
| Time Zone | Mountain Time Zone |
| State | Idaho |
| Coordinates | 43.8° N, 111.7° W |
| Etymology | Named after John C. Fremont, an American explorer and politician. |
| Major Landmarks | Yellowstone National Park (partially), Island Park Reservoir, Harriman State Park |
