| Zip Code | City | Population ↓ |
|---|---|---|
| 83445 | Saint Anthony | 7,213 |
| 83420 | Ashton | 2,737 |
| 83429 | Island Park | 643 |
| 83421 | Chester | 379 |
| 83438 | Parker | 373 |
| 83433 | Macks Inn | 29 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Fremont County, Idaho (US Census).