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Washington County, Oregon Demographics 2026

Washington County, Oregon has a population of 603,947, the 2nd most populous county in Oregon. The median household income is $107,772 and the median home value is $588,000. The poverty rate is 8.1%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Washington County Quick Facts

Population 603,947
Median Household Income $107,772
Median Home Value $588,000
Poverty Rate 8.1%
Unemployment Rate 4.5%
Median Age 38.1 years
Homeownership Rate 60.8%
Affordability Ratio 5.5x
Bachelor's Degree+ 47.5%
High School Graduation 92.8%
Cities/Places 27
Population 603,947 2nd of 36
Median Income $107,772 30% higher than state
Poverty Rate 8.1%
Unemployment 4.5%

How Washington County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric2019–20232020–2024Change
Population600,266603,947+0.6%
Median household income$104,434$107,772+3.2%
Median home value$558,500$588,000+5.3%

Economy & Housing

Household Income Distribution

Under $25K 8.8%
$25K-$50K 11.6%
$50K-$100K 25.7%
$100K+ 53.9%
Detailed income brackets
Under $10K
3.0%
$10K-$15K
1.8%
$15K-$20K
1.7%
$20K-$25K
2.3%
$25K-$30K
2.0%
$30K-$35K
2.3%
$35K-$40K
2.2%
$40K-$45K
2.6%
$45K-$50K
2.5%
$50K-$60K
4.5%
$60K-$75K
8.2%
$75K-$100K
13.0%
$100K-$125K
11.8%
$125K-$150K
8.4%
$150K-$200K
14.1%
$200K+
19.6%

Employment

4.5% Unemployment Rate State: 5.4%|National: 5.2%
68.6% Labor Force Participation

Housing Overview

Owner 60.8%
Renter 39.2%
Affordability Index Expensive
5.5x home value to income ratio
Median gross rent $1,849/mo 20.6% of median household income annually

People & Demographics

Diversity Index

59out of 100
High Diversity

A diverse community with significant representation from multiple racial and ethnic groups.

State average: 46 | National average: 61

Education

Cities & Places in Washington County

CityPopulationMedian IncomePovertyHome Value
Hillsboro108,231$106,4098.5%$521,100
Beaverton97,812$98,62210.1%$569,800
Tigard56,011$108,8236.7%$610,500
Aloha52,389$101,9347.8%$484,400
Bethany33,106$167,7354.0%$751,700
Tualatin27,763$104,04310.0%$628,200
Wilsonville26,974$96,2368.8%$615,300
Forest Grove26,529$87,93315.4%$479,600
Sherwood20,307$109,9664.3%$602,100
Cornelius14,255$96,2739.1%$452,900
Oak Hills11,131$127,1793.4%$647,800
Bull Mountain9,865$165,4264.7%$696,600
Rockcreek9,223$107,1014.3%$653,300
Cedar Hills8,388$105,8502.3%$611,400
Garden Home-Whitford6,979$97,5005.9%$624,900
Raleigh Hills6,744$120,0007.0%$913,700
West Slope6,582$104,8758.6%$755,300
Marlene Village5,439$115,4177.5%$539,800
King City5,073$63,6848.7%$423,700
Metzger3,714$91,1027.6%$543,400
North Plains3,433$117,6392.9%$587,500
Banks2,156$86,0879.3%$446,800
Durham1,983$81,25013.9%$759,600
Rivergrove657$212,8985.3%$902,300
Gaston605$125,6256.3%$466,400
Cherry Grove335$59,92216.4%$398,800
Dilley200$250,000+0.0%$753,600

Explore Oregon Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Washington County is located in Oregon with a total population of 603,947. It is the 2nd most populous county out of 36 in Oregon. The county encompasses 27 Census-designated places.

Age Demographics

The median age in Washington County is 38.1 years. This is 6% lower than the state median of 40.4 years.

Economy, Income & Housing

The median household income in Washington County is $107,772. This is 30% higher than the state median of $83,011. It is also 33% higher than the national median of $80,734. The poverty rate stands at 8.1%. This is 33% lower than the state poverty rate of 11.9%. The unemployment rate is 4.5%. This is 16% lower than the state rate of 5.4%. The median home value is $588,000. Housing costs are 23% higher than the state median of $477,600. The home-value-to-income ratio is 5.5x. 60.8% of occupied housing units are owner-occupied. This homeownership rate is 4% lower than the state average of 63.3%.

Race & Ethnicity

The largest racial or ethnic group in Washington County is White (non-Hispanic), making up 60.0% of the population. Hispanic or Latino residents account for 18.6%. The Asian population is significantly higher than the state average (11.4% vs 4.4%).

Education

47.5% of residents aged 25 and older hold a bachelor's degree or higher. This places Washington County in the top 10% of all counties in the state for educational attainment. This is 29% higher than the state rate of 36.8%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.8%. Notably, 18.5% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All figures for Washington County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Oregon and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Washington County, Oregon?

Washington County has a population of 603,947, making it the 2nd most populous county in Oregon.

What is the median income in Washington County?

The median household income in Washington County is $107,772 with a poverty rate of 8.1%.

How many cities are in Washington County, Oregon?

Washington County contains 27 Census-designated places.