Census-designated place · Oregon
Oak Hills, Oregon
Oak Hills, census-designated place, in Washington County, Oregon. Oak Hills had 11,131 people in the ACS 2020-2024 5-year estimates (±834). GEOID 4153988.
Residents, 2020-2024
11,131
±834 (90% margin)
2020 Census count: 11,903
Median household income
$127,179
±$5,092 (90% margin)
Oregon: $83,011
Median home value
$647,800
±$13,456 (90% margin)
Oregon: $477,600
Median gross rent
$1,935
±$100 (90% margin)
Oregon: $1,525
Where is Oak Hills and what county is it in?
Oak Hills is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Washington County, Oregon. It covers 1.6 square miles of land, 7,655 residents per square mile in 2020.
Oak Hills is in the Portland-Vancouver-Hillsboro, OR-WA metropolitan statistical area, which takes in 7 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Oak Hills, and is it growing?
The 2020-2024 American Community Survey puts Oak Hills's population at 11,131 (±834). The 2020 Census counted 11,903 residents.
The Census Bureau publishes yearly population estimates for incorporated places only; Oak Hills is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | Oak Hills | Washington County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 11,131 ±834 | 603,947 | −1,177 |
| Households | 4,249 ±268 | 235,406 | no clear change |
| Average household size | 2.61 ±0.10 | 2.53 | −0.32 |
| Housing units | 4,304 ±270 | 243,278 | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Oak Hills?
The median resident of Oak Hills is 38.6 years old; 23.8% are under 18 and 12.4% are 65 or older. The largest group is non-Hispanic white residents at 58.4%, then non-Hispanic Asian residents at 24.5%. 23.3% of residents were born outside the United States.
| Measure | Oak Hills | Washington County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 38.6 ±1.6 | 38.1 | no clear change |
| Under 18 years | 23.8% ±2.0 pts | 21.6% | – |
| 65 years and over | 12.4% ±1.6 pts | 14.8% | – |
| Male | 52.9% ±2.3 pts | 49.9% | – |
| Hispanic or Latino (any race) | 8.6% ±3.3 pts | 18.6% | no clear change |
| White alone, not Hispanic | 58.4% ±5.5 pts | 60.0% | −11.1 pts |
| Black or African American alone, not Hispanic | 0.9% ±0.5 pts | 2.2% | no clear change |
| Asian alone, not Hispanic | 24.5% ±5.9 pts | 11.4% | +8.9 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.2% ±0.2 pts | 0.3% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.4 pts | 0.5% | – |
| Two or more races, not Hispanic | 7.5% ±3.4 pts | 6.5% | – |
| Some other race alone, not Hispanic | 0.0% ±0.4 pts | 0.6% | – |
| Born outside the United States | 23.3% ±4.3 pts | 18.3% | no clear change |
| Speak a language other than English at home (age 5+) | 30.0% ±5.7 pts | 25.8% | – |
| Civilian veterans (age 18+) | 3.7% ±1.2 pts | 5.6% | – |
| With a disability | 8.6% ±1.8 pts | 11.6% | – |
| No health insurance coverage | 3.0% ±2.0 pts | 5.2% | – |
| High school graduate or higher (age 25+) | 96.5% ±3.1 pts | 92.7% | – |
| Bachelor's degree or higher (age 25+) | 65.2% ±4.0 pts | 47.5% | +7.7 pts |
| Graduate or professional degree (age 25+) | 29.0% ±4.4 pts | 18.5% | – |
| Lived in the same house a year earlier | 88.9% ±3.2 pts | 86.9% | – |
| Moved from another state in the past year | 2.7% ±1.4 pts | 2.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Oak Hills earn?
Half of Oak Hills's 4,249 households earn less than $127,179 a year (±$5,092), against $107,772 in Washington County and $83,011 in Oregon. In 2015-2019 the median was $118,544 in 2024 dollars, so it rose by $8,635 after inflation. 3.4% of residents live below the poverty line.
| Measure | Oak Hills | Washington County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $127,179 ±$5,092 | $107,772 | +$8,635 |
| Mean household income | $151,455 ±$9,920 | $137,880 | – |
| Per capita income | $57,829 ±$4,233 | $53,929 | +$8,203 |
| People below the poverty line | 3.4% ±1.7 pts | 8.1% | −6.1 pts |
| Children under 18 below the poverty line | 2.8% ±2.9 pts | 8.6% | – |
| Households receiving SNAP | 5.3% ±2.3 pts | 10.5% | – |
| Households with a computer | 98.5% ±1.3 pts | 98.0% | – |
| Households with a broadband subscription | 97.6% ±1.7 pts | 95.4% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Oak Hills?
Owners occupy 61.7% of Oak Hills's occupied homes and renters 38.3%. The median owner-occupied home is valued at $647,800 by its owner (±$13,456). The median renter pays $1,935 a month including utilities, and 33.0% of renters pay 35% or more of their income on rent.
| Measure | Oak Hills | Washington County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $647,800 ±$13,456 | $588,000 | +$91,034 |
| Median gross rent | $1,935 ±$100 | $1,849 | +$200 |
| Renters paying 35% or more of income on rent | 33.0% ±8.9 pts | 39.1% | −13.4 pts |
| Median monthly owner costs, with a mortgage | $2,735 ±$139 | $2,475 | – |
| Owner-occupied homes | 61.7% ±4.5 pts | 60.8% | no clear change |
| Renter-occupied homes | 38.3% ±4.5 pts | 39.2% | – |
| Housing units | 4,304 ±270 | 243,278 | no clear change |
| Homeowner vacancy rate | 0.0% ±1.5 pts | 0.5% | – |
| Rental vacancy rate | 0.0% ±2.4 pts | 4.1% | – |
| Single-family detached homes | 66.3% ±3.6 pts | 57.3% | – |
| Mobile homes | 0.0% ±0.9 pts | 1.9% | – |
| Built 2020 or later | 0.0% ±0.9 pts | 2.4% | – |
| Built 2010 to 2019 | 5.5% ±2.7 pts | 12.0% | – |
| Built 1939 or earlier | 0.7% ±0.8 pts | 2.8% | – |
| Households with no vehicle | 6.5% ±3.0 pts | 5.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Oak Hills work and get to work?
57.2% of Oak Hills's workers drive alone and 31.4% work from home. The average trip to work takes 21.3 minutes. The unemployment rate in 2020-2024 averaged 3.1%.
| Measure | Oak Hills | Washington County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 71.8% ±3.8 pts | 68.6% | – |
| Unemployment rate | 3.1% ±1.7 pts | 4.5% | – |
| Drove alone to work | 57.2% ±5.9 pts | 61.2% | – |
| Carpooled | 5.5% ±2.4 pts | 7.4% | – |
| Public transportation | 2.2% ±2.0 pts | 3.1% | – |
| Walked | 2.8% ±2.0 pts | 2.3% | – |
| Worked from home | 31.4% ±6.1 pts | 24.4% | +27.0 pts |
| Mean travel time to work | 21.3 min ±2.5 | 24.0 min | −5.5 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Oak Hills?
3 census tracts lie mostly in Oak Hills (2020 census blocks). Their median household incomes run from $121,830 (Tract 315.06) to $147,128 (Tract 315.18).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 315.17Washington County | 4,368 | $125,700 |
| Tract 315.18Washington County | 3,435 | $147,128 |
| Tract 315.06Washington County | 3,328 | $121,830 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Oak Hills) · Census block assignment files
How does Oak Hills compare with other places in Oregon?
Oak Hills ranks 10th of 223 places in Oregon with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 57th | 224 |
| Residents per square mile | 1st | 224 |
| Median household income | 10th | 223 |
| Per capita income | 19th | 224 |
| Median home value | 25th | 224 |
| Median gross rent | 13th | 207 |
| Poverty rate | 171st | 175 |
| Bachelor's degree or higher | 9th | 219 |
| Median age | 142nd | 224 |
| Owner-occupied share | 153rd | 224 |
| Work from home | 11th | 169 |
| Travel time to work | 137th | 221 |
Oak Hills's figures with every place in Oregon (CSV)
Every place in Oregon, sortable · Compare Oak Hills with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Oak Hills?
12 of the 57 figures for Oak Hills on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Oak Hills are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.