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Washington County Area Codes

About Washington County Area Codes

The county of Washington County, located in Oklahoma, is served by 2 telephone area code(s) in this dataset. These calling codes cover cities, suburbs, and unincorporated communities across the county.

Major phone area codes used in Washington County include 539, 918. The county mainly follows the America/Chicago time zone.

Cities and towns served by these area codes in Washington County include Bartlesville.

List of Area Codes in Washington County, Oklahoma

The table below lists all telephone area codes used in Washington County, Oklahoma, along with their associated cities and time zones from this dataset.


S.N. Area Code Cities Time Zone(s)
1 539 Bartlesville America/Chicago
2 918 Bartlesville America/Chicago


Related Area Code Pages

Explore related area code resources on Burning Compass:

  • All area codes in Oklahoma
  • Individual area code details are available from the table above.

County Area Codes in Oklahoma

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  14. Washington County Area Codes

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