Washington County

County population

Year	Population
1980.	245684
1990.	311554
2000.	445342
2010.	529710

Details Washington County Washington County

www.co.washington.or.us/

Oregon

Washington County

County

41067

County seat is in Hillsboro
Founded in 1843
Area: 724 square miles
County board has 5 members
FIPS code: 41067


Zipcodes in Washington County: 97119, 97117, 97116, 97113, 97006, 97224, 97223, 97229, 97140, 97106, 97076, 97077, 97078, 97133, 97075, 97144, 97225, 97125, 97005, 97007, 97008, 97281, 97291, 97123, 97124, 97298, 97062, 97109

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