US lakes & pondsUS lakes & pondsCampground · National forest in Cassia County, Idaho.
| Managed by | USDA Forest Service (Sawtooth National Forest) |
|---|---|
| Campsites | 11 |
| Site types | 8 standard, no electric, 3 group standard, no electric |
| Longest RV/trailer site | 60 ft |
| RVs welcome | Yes |
| Dogs allowed | Yes |
| Phone | (208) 678-0430 |
| Reservations | Recreation.gov |
We only list amenities a source records. A missing item doesn't mean the campground lacks it, so check with Thompson Flat Campground before you go.
Thompson Flat Campground is located high in the Albion Mountain Range of southern Idaho, near the towns of Declo and Albion. Visitors enjoy the area for its abundant trails, alpine lakes and scenic beauty. Recreation The Twin Lakes Campground area is located just outside the campground and across the road. It offers picnic areas, horse corrals and access to a variety of trails. Lake Cleveland is a two-mile drive from the campground, offering fishing, canoeing and trail opportunities. Several additional hiking, mountain biking, horse and off-road vehicle trails are on the mountain.
Description: Recreation.gov (U.S. federal government, public domain), shortened.
Thompson Flat Campground is in Cassia County.
Sources: Recreation.gov (RIDB) · OpenStreetMap contributors (ODbL). Pulled Oct 12, 2026. Interactive map: Leaflet with © OpenStreetMap contributors. Seasons, rates and rules change; confirm with the campground.