There are 10 cities in Fremont County, Idaho.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Rexburg | 1 | Idaho | 41,501 | 39,423 | 1.27% | 4,104 | 10.11 |
| St. Anthony | 2 | Idaho | 4,034 | 3,702 | 2.1% | 2,096 | 1.93 |
| Sugar City | 3 | Idaho | 2,347 | 1,729 | 7.07% | 1,183 | 1.98 |
| Ashton | 4 | Idaho | 978 | 950 | 0.72% | 1,533 | 0.64 |
| Teton | 5 | Idaho | 873 | 791 | 2.46% | 1,267 | 0.69 |
| Newdale | 6 | Idaho | 335 | 331 | 0.3% | 1,821 | 0.18 |
| Parker | 7 | Idaho | 302 | 300 | 0.33% | 870 | 0.35 |
| Island Park | 8 | Idaho | 196 | 194 | 0.51% | 32 | 6.08 |
| Drummond | 9 | Idaho | 16 | 14 | 6.67% | 167 | 0.10 |
| Warm River | 10 | Idaho | 1 | 1 | 0% | 2 | 0.67 |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Rexburg is the largest city in Fremont County.
Warm River is the smallest city in Fremont County.
There are 10 cities in Fremont County, Idaho.