| Zip Code | Primary City | Secondary City | More Information |
| 80003 | Arvada | Westminster | Westminster population stats |
| 80005 | Arvada | Westminster | Westminster population stats |
| 80020 | Broomfield | Westminster | Westminster population stats |
| 80021 | Broomfield | Westminster | Westminster population stats |
| 80023 | Broomfield | Westminster | Westminster population stats |
| 80221 | Denver | Westminster | Westminster population stats |
| 80234 | Denver | Westminster | Westminster population stats |
| 80241 | Thornton | Westminster | Westminster population stats |
| 80260 | Denver | Westminster | Westminster population stats |
| 80030 | Westminster | Westminster | Westminster population stats |
| 80031 | Westminster | Westminster | Westminster population stats |
| 80036 | Westminster | Westminster | Westminster population stats |