834
- 83401 Idaho Falls
- 83402 Idaho Falls
- 83404 Idaho Falls
- 83406 Idaho Falls
- 83414 Alta
- 83420 Ashton
- 83421 Chester
- 83422 Driggs
- 83423 Dubois
- 83424 Felt
- 83425 Hamer
- 83427 Iona
- 83428 Irwin
- 83429 Island Park
- 83431 Lewisville
- 83433 Macks Inn
- 83434 Menan
- 83435 Monteview
- 83436 Newdale
- 83440 Rexburg
- 83442 Rigby
- 83443 Ririe
- 83444 Roberts
- 83445 Saint Anthony
- 83446 Spencer
- 83448 Sugar City
- 83449 Swan Valley
- 83450 Terreton
- 83451 Teton
- 83452 Tetonia
- 83454 Ucon
- 83455 Victor
- 83460
- 83462 Carmen
- 83463 Gibbonsville
- 83464 Leadore
- 83465 Lemhi
- 83466 North Fork
- 83467 Salmon
- 83468 Tendoy
- 83469 Shoup