Explore Lost River, Idaho, with this interactive street and satellite map.
| City | Lost River |
| State | Idaho (ID) |
| County | Custer County |
| Country | United States of America |
| Timezone | Mountain Time (America/Boise) |
| Latitude | 43.688262 |
| Longitude | -113.635283 |
| Population | 42 |
| Density | 1.9 /km² |
| Incorporated | Yes |
| ZIP Codes | 83255, 83251 |
| Area Code | 208 |
| County Seat | Challis |
| School District | Butte County Joint School District 111 |
Lost River emerges from the high, arid expanse where the sagebrush plains meet the stark, sudden verticality of the earth. It lies 72.3 miles west-northwest of Blackfoot, ID (from Blackfoot, ID: bearing 299°T), and is situated 36.9 miles east-northeast of Hailey. Antelope Creek carves a deliberate path through the basin, its waters sustaining a narrow ribbon of green that defies the surrounding parched dust and gray rock. To the horizon, the jagged silhouette of the Lost River Range commands the sky, its peaks holding the light long after the shadows have claimed the valley floor. Only a mile away, the rugged, shadowed depths of Graveyard Canyon offer a silent contrast to the open basin, while the nearby Idaho Department of Lands provides a vast, managed threshold for those who venture into the wilder reaches of the high desert.
Agriculture remains the quiet pulse of Lost River, where the rhythm of the seasons dictates the labor of the day and the lean, hard-working character of the residents. The economy relies upon the endurance of those who know how to draw a living from the stubborn soil, a practice that has defined the region since its earliest settlement. Ten miles away, the waters of Nichols Reservoir stand as a still, reflective presence, serving as a vital anchor for the local landscape. Life here possesses a gravity born of isolation and the immense, open sky, where the wind carries the scent of dry earth and the persistent, quiet promise of a long, cold winter.
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This page provides an embedded street and satellite map of Lost River, Idaho. Coordinates: 43.688262, -113.635283. Live weather conditions are sourced directly from the National Weather Service. Real-time local and world news feeds keep the page current.
Detailed location data for Lost River includes the ZIP code (83255, 83251), telephone area code (208), county seat of Custer County (Challis), and school district assignment (Butte County Joint School District 111).
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity. Population figures are sourced from the 2020 US Census.
| Page generated | August 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. |