Warm River
City in Fremont County, Idaho

Warm River is a city in Fremont County, Idaho, with 4 residents (2020 Census). It sits at 5,295 ft (1,614 m) above sea level. The nearest town is Ashton, 7.1 miles SW.
- 4residents (2020 Census)
- 5,295 ftelevation · 1,614 m
- 0.7 sq miland area · 1.7 km²
- 6 / sq mipopulation density
- 83420ZIP code
About Warm River
Warm River is a city in Fremont County, Idaho, United States. The population was 4 at the 2020 census, making it the least populous city in Idaho. It is part of the Rexburg, Idaho Micropolitan Statistical Area.
Text: Wikipedia · CC BY-SA 4.0
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Open in Google Maps ›Warm River, ID population
Warm River had 4 residents in the 2020 Census.
| 2020 Census | 4 |
|---|---|
| Density | 6 per sq mi (2 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Warm River at a glance
| State | Idaho (ID) |
|---|---|
| County | Fremont County |
| Type | City |
| Population | 4 (2020) |
| Land area | 0.66 sq mi (1.7 km²) |
| Water area | 0.01 sq mi (0.03 km²) |
| Elevation | 5,295 ft (1,614 m) |
| Coordinates | 44.1209° N, 111.3210° W |
| ZIP code | 83420 |
| Census code (GEOID) | 1685420 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Warm River
- Ashton7.1 mi SW
- Drummond8.5 mi S
- St. Anthony21.0 mi SW
- Newdale21.5 mi SW
- Tetonia22.7 mi S
- Teton23.8 mi SW
- Parker24.5 mi SW
- Sugar City27.4 mi SW
- Alta, WY28.0 mi SE
- Island Park28.6 mi N
- Driggs29.1 mi S
- Rexburg31.1 mi SW
Straight-line distance between town centers.
Frequently asked questions about Warm River
What county is Warm River in?
Warm River is in Fremont County, Idaho.
What is the population of Warm River, ID?
4 people lived in Warm River at the 2020 Census.
What is the ZIP code of Warm River, ID?
The ZIP code of Warm River is 83420.
What is the elevation of Warm River?
5,295 feet (1,614 m) above sea level.
What towns are near Warm River?
Ashton (7.1 mi), Drummond (8.5 mi), St. Anthony (21.0 mi), Newdale (21.5 mi), Tetonia (22.7 mi).
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