Post Offices List in Fremont County, Idaho:
| Chester Post Office | 797 East St, Chester, ID 83421 |
| Island Park Post Office | 3978 Us Highway 20, Island Park, ID 83429 |
| Newdale Post Office | 385 City St, Newdale, ID 83436 |
| Parker Post Office | 31 N Center, Parker, ID 83438 |
| Saint Anthony Post Office | 50 W 1st N, Saint Anthony, ID 83445 |
| Teton Post Office | 8 E Main St, Teton, ID 83451 |
| Ashton Post Office | 109 S 5th St, Ashton, ID 83420 |
| Macks Inn Post Office | 4110 S Big Springs Rd, Macks Inn, ID 83433 |