| Zip Code | Primary City | Secondary City | | 80003 | Arvada | Westminster | | 80005 | Arvada | Westminster | | 80020 | Broomfield | Westminster | | 80021 | Broomfield | Westminster, Arvada, | | 80023 | Broomfield | Westminster, Denver, Thornton, | | 80030 | Westminster | Denver | | 80031 | Westminster | Denver | | 80035 | Westminster | | | 80036 | Westminster | | | 80221 | Denver | Westminster, Northglenn, Thornton, Federal Heights, Federal Hgts | | 80234 | Denver | Westminster, Federal Heights, Broomfield, Thornton, North Glenn, Northglenn | | 80241 | Thornton | Westminster, East Lake, Eastlake, Denver, Northglenn, | | 80260 | Denver | Westminster, Federal Heights, Northglenn, Thornton, Federal Hgts |
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