ZIP Code 80503

List of Cities

The ZIP code is located in USA » Colorado.

Cities - ZIP Code 80503

  • 80503 - Longmont (CO)
    AreaCode: 303
    FIPS (Federal Information Processing Standard): 08013
    County: Boulder
    TimeZone: MST
  • 80503 - Niwot (CO)
    AreaCode: 303
    FIPS (Federal Information Processing Standard): 08013
    County: Boulder
    TimeZone: MST
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