Zip Area Code

Louisville, Colorado

Louisville, Colorado, in Boulder County, has ZIP code 80027 and area code 303, with overlays 720 and 983.

ZIP code
80027
Area codes
303, 720, 983
County
Boulder County
State
Colorado
Time zone
Mountain Time
Coordinates
39.9789, -105.1456

ZIP codes in Louisville

ZIP codePost officeCountyArea codes
80027LouisvilleBoulder County303, 720, 983

Area codes for Louisville

  • Area code 303

    In service since 1947. Shares its area with 720 and 983. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 720

    In service since June 1, 1998. Shares its area with 303 and 983. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 983

    In service since June 17, 2022. Shares its area with 303 and 720. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Area codes here are matched from telephone rate centers, so a place near a boundary can have local numbers from either side of it.

Time zone

Louisville is in the Mountain Time zone.

Towns near Louisville

Local numbers in area code 303

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