Post Offices List in Bonneville County, Idaho:
| Eagle Rock Post Office | 875 N Capital Ave, Idaho Falls, ID 83402 |
| Idaho Falls Post Office | 605 4th St, Idaho Falls, ID 83401 |
| Iona Post Office | 3614 N Main St, Iona, ID 83427 |
| Irwin Post Office | 3373 Swan Valley Hwy, Irwin, ID 83428 |
| Swan Valley Post Office | 3004 Swan Valley Hwy, Swan Valley, ID 83449 |
| Ucon Post Office | 10990 N Yellowstone Hwy, Ucon, ID 83454 |