Cities in Washington County, Oregon by Population (2024)

There are 37 cities in Washington County, Oregon.

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Portland1Oregon622,882653,344-1.21%4,666133.49
Hillsboro2Oregon107,976106,9900.23%4,17825.84
Beaverton3Oregon96,75697,510-0.19%4,92619.64
Tigard4Oregon55,78155,0170.34%4,37312.76
Aloha5Oregon53,34053,724-0.18%7,2517.36
Lake Oswego6Oregon39,62240,828-0.76%3,65910.83
Bethany7Oregon33,91928,0474.52%6,2335.44
Tualatin8Oregon27,21627,884-0.61%3,2418.40
Forest Grove9Oregon26,98826,2310.7%4,5815.89
Newberg10Oregon26,29825,4840.78%4,3955.98
Wilsonville11Oregon26,22126,717-0.47%3,4737.55
Sherwood12Oregon19,80120,424-0.78%4,0464.89
Cedar Mill13Oregon19,47918,6610.85%5,8513.33
Cornelius14Oregon15,71012,7924.87%6,7172.34
Oak Hills15Oregon11,87811,6820.41%7,6391.55
Rockcreek16Oregon10,1489,6981.13%5,1621.97
Bull Mountain17Oregon8,9069,732-2.26%4,4891.98
Cedar Hills18Oregon8,6389,514-2.47%4,5821.89
Scappoose19Oregon8,3398,0190.97%2,4273.44
West Haven-Sylvan20Oregon8,2478,505-0.77%3,6772.24
Garden Home-Whitford21Oregon6,8777,295-1.49%4,4401.55
Raleigh Hills22Oregon6,7596,6750.16%4,4441.52
West Slope23Oregon6,5276,799-1.03%4,0391.62
Marlene Village24Oregon5,2165,356-0.67%5,7070.91
King City25Oregon4,8985,176-1.41%6,0390.81
Metzger26Oregon3,4624,402-6.36%4,5550.76
North Plains27Oregon3,3563,443-0.65%3,0791.09
Vernonia28Oregon2,4402,3790.62%1,4851.64
Durham29Oregon1,8331,941-1.45%4,4710.41
Banks30Oregon1,7961,839-0.61%2,3570.76
Dunthorpe31Oregon1,7771,6900.28%1,6891.05
Warren32Oregon1,4501,876-5.17%2306.31
Stafford33Oregon1,1941,940-13.48%1906.27
Gaston34Oregon663677-0.6%1,9440.34
Rivergrove35Oregon530542-0.56%3,0640.17
Cherry Grove36Oregon472506-1.67%4361.08
Dilley37Oregon2521721.61%3370.75
showing: 37 rows

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Washington County, Oregon?

Portland is the largest city in Washington County.

What is the smallest city in Washington County, Oregon?

Dilley is the smallest city in Washington County.

How many cities are in Washington County?

There are 37 cities in Washington County, Oregon.

Frequently Asked Questions