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.)

37 Rows

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Portland1622,882653,344-1.21%4,666133.5City
Hillsboro2107,976106,9900.23%4,17825.8City
Beaverton396,75697,510-0.19%4,92619.6City
Tigard455,78155,0170.34%4,37312.8City
Aloha554,21653,7240.64%7,3707.4CDP
Lake Oswego639,62240,828-0.76%3,65910.8City
Bethany732,70628,0472.71%6,0105.4CDP
Tualatin827,21627,884-0.61%3,2418.4City
Forest Grove926,98826,2310.7%4,5815.9City
Newberg1026,29825,4840.78%4,3956.0City
Wilsonville1126,22126,717-0.47%3,4737.6City
Cedar Mill1219,91818,6611.96%5,9833.3CDP
Sherwood1319,80120,424-0.78%4,0464.9City
Cornelius1415,71012,7924.87%6,7172.3City
Oak Hills1511,85411,6820.31%7,6231.6CDP
Rockcreek1610,0249,6980.5%5,0992.0CDP
Bull Mountain179,3509,7320.17%4,7132.0CDP
Cedar Hills189,2059,5140.7%4,8831.9CDP
West Haven-Sylvan198,4388,5050.37%3,7622.2CDP
Scappoose208,3398,0190.97%2,4273.4City
Garden Home-Whitford217,1557,2950.49%4,6191.5CDP
Raleigh Hills226,8776,6751.03%4,5211.5CDP
West Slope236,6816,7990.14%4,1341.6CDP
Marlene Village246,1675,3567.7%6,7470.9CDP
King City254,8985,176-1.41%6,0390.8City
Metzger263,9604,4020.36%5,2110.8CDP
North Plains273,3563,443-0.65%3,0791.1City
Vernonia282,4402,3790.62%1,4851.6City
Dunthorpe292,0621,6907.73%1,9601.1CDP
Durham301,8331,941-1.45%4,4710.4City
Banks311,7961,839-0.61%2,3570.8City
Warren321,5781,876-0.94%2506.3CDP
Stafford331,5651,940-0.06%2506.3CDP
Gaston34663677-0.6%1,9440.3City
Cherry Grove355705067.55%5271.1CDP
Rivergrove36530542-0.56%3,0640.2City
Dilley372851727.95%3810.7CDP

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