| 59002 Acton | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59006 Ballantine | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59101 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59102 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59103 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59104 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59105 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59106 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59107 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59108 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59111 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59112 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59114 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59115 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59116 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59117 Billings | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59015 Broadview | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59015 Comanche | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59024 Custer | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59116 First Interstate Bank | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59102 Hesper | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59037 Huntley | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59114 K O A | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59044 Laurel | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59101 Lockwood | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59002 Molt | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59057 Molt | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59112 Mount Dakota Util Co | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59064 Pompey Pillar | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59064 Pompeys Pillar | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59111 Public Works | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59079 Shepherd | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59115 Us Bank | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59117 Wells Fargo Bank | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |
| 59088 Worden | 406 | Yellowstone County | Montana - MT | Billings, MT (0880) | MSA |