Zip Area Code

Union, Oklahoma

No ZIP code carries the name of Union, Oklahoma, in Canadian County; the nearest ZIP code is 73090, in area code 405, with 572 as an overlay.

Nearest ZIP
73090
Area codes
405, 572
Time zone
Central Time
Coordinates
35.3995, -97.9067

Nearest ZIP codes to Union

This is the ZIP code nearest to Union, each listed with the post office it is named after.

ZIP codePost officeCountyArea codes
73090Union CityCanadian County405, 572

Area codes for Union

  • Area code 405

    In service since 1947. Shares its area with 572. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

  • Area code 572

    In service since May 24, 2021. Shares its area with 405. 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

Union is in the Central Time zone.

Towns near Union