Carter county zip code - Zip codes in Carter county Montana
| City | ZipCode | Area Code(s) | Time Zone | MSA |
| Capitol (Capitol Zip Code Lookup) | 59319 (59319 Zip Code Lookup) | 406 | Mountain | 0000 |
| Ekalaka (Ekalaka Zip Code Lookup) | 59324 (59324 Zip Code Lookup) | 406 | Mountain | 0000 |
| Hammond (Hammond Zip Code Lookup) | 59332 (59332 Zip Code Lookup) | 406 | Mountain | 0000 |
| Mill Iron (Mill Iron Zip Code Lookup) | 59324 (59324 Zip Code Lookup) | 406 | Mountain | 0000 |
| Alzada (Alzada Zip Code Lookup) | 59311 (59311 Zip Code Lookup) | 406 | Mountain | 0000 |
| Boyes (Boyes Zip Code Lookup) | 59316 (59316 Zip Code Lookup) | 406 | Mountain | 0000 |