| Zip Code | Primary City | Secondary City | More Information |
| 59101 | Billings | Lockwood | Lockwood population stats |
| 59102 | Billings | Billings | Billings population stats |
| 59103 | Billings | Billings | Billings population stats |
| 59104 | Billings | Billings | Billings population stats |
| 59105 | Billings | Billings | Billings population stats |
| 59106 | Billings | Billings | Billings population stats |
| 59107 | Billings | Billings | Billings population stats |
| 59108 | Billings | Billings | Billings population stats |
| 59111 | Billings | Billings | Billings population stats |
| 59112 | Billings | Billings | Billings population stats |
| 59114 | Billings | Billings | Billings population stats |
| 59115 | Billings | Billings | Billings population stats |
| 59116 | Billings | Billings | Billings population stats |
| 59117 | Billings | Billings | Billings population stats |