| Locality | Post Code |
|---|---|
| Buhl, Twin Falls | 83316 |
| Castleford, Twin Falls | 83321 |
| Clover, Twin Falls | 83316 |
| Curry, Twin Falls | 83328 |
| Deep Creek, Twin Falls | 83316 |
| Filer, Twin Falls | 83328 |
| Hansen, Twin Falls | 83334 |
| Hollister, Twin Falls | 83301 |
| Kimberly, Twin Falls | 83341 |
| Lynwood, Twin Falls | 83301 |
| Murtaugh, Twin Falls | 83344 |
| Rock Creek, Twin Falls | 83334 |
| Rogerson, Twin Falls | 83302 |
| Roseworth, Twin Falls | 83321 |
| Three Creek, Twin Falls | 83301, 83302 |
| Twin Falls, Twin Falls | 83301, 83303 |