where is 425 area code
From Wikipedia, the free encyclopedia. Area code 425 is a telephone dialing code in Washington for the suburbs north and east of Seattle, particularly the Eastside, extending east to North Bend, north to Everett, and south to Maple Valley.he song Operator by Danish eurodance artist Miss Papaya begins with an automated message notifying the caller that area code 206 has been changed to 425.