Thornton, Washington Area Code

Thornton, WA Area Codes are

Thornton, WA is officially utilizing one area code which is area code 509.

In addition to Thornton, WA area code information read more about area code 509 details and Washington area codes.

Thornton, WA is located in Whitman County and observes the Pacific Time Zone. View our Times by Area Code tool.

Washington Area Code Map