Zip Area Code

Keystone, Florida

No ZIP code carries the name of Keystone, Florida, in Hillsborough County; the nearest ZIP codes are 33556, 33626 and 34688, in area codes 813 (overlay 656) and 727.

Nearest ZIP
33556, 33626, 34688
Area codes
813, 656, 727
State
Florida
Time zone
Eastern Time
Coordinates
28.1276, -82.6081

Nearest ZIP codes to Keystone

These are the ZIP codes nearest to Keystone, each listed with the post office it is named after.

ZIP codePost officeCountyArea codes
33556OdessaHillsborough County813, 656
33626TampaHillsborough County813, 656
34688Tarpon SpringsPinellas County727

Area codes for Keystone

  • Area code 813

    In service since 1953. Shares its area with 656. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 656

    In service since February 22, 2022. Shares its area with 813. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 727

    In service since July 1, 1998. Local calls are dialed with seven digits.

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

Keystone is in the Eastern Time zone.

Towns near Keystone