Washington County Area Codes

About Washington County Area Codes

The county of Washington County, located in Oregon, 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 503, 971. The county mainly follows the America/Los_Angeles time zone.

Cities and towns served by these area codes in Washington County include Aloha, Beaverton, Hillsboro, Portland, Tigard, Tualatin.

List of Area Codes in Washington County, Oregon

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

Related Area Code Pages

Explore related area code resources on Burning Compass:

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