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COUNTY · 2000 CENSUS

Washington County

Oregon · 445,342 residents · 724.272 sq mi
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The short version

Washington County is wealthier than most US places, with a median household income of $52,122. Population has grown 43% since 1990. 35% of adults hold a bachelor's degree or higher, well above the national rate of 24%. Median home value has more than doubled since 1990, reaching $180,400. Households here earn about 27% more than the Oregon median.

At a glance
Wealthier
above the US median
US median: $42,589
Younger
median age 33.0
US median: 35.2
More educated
35% hold a bachelor's degree
US average: 24%
Less affordable
home values up 61%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
445,342
+43%since 1990
from 311,554 in 1990
1990 – 2025
Population density
615 / sq mi
+43%since 1990
from 430 / sq mi in 1990
US average: 242
Median age
33.0
+1%since 1990
from 32.7 in 1990
US average: 35.2
Population, 1990 – 2024
282K370K458K545K633K1990201020202024Washington County
2024604K
1990201020202024
Section 02

Income & economy

Median household income
$52,122
+11%inflation adjusted, since 1990
from $35,554 in 1990
US average: $42,589
1990 – 2024
Per capita income
$24,969
+53%since 1990
from $16,351 in 1990
US average: $21,522
Poverty rate
7.4%
+0.8 ptssince 1990
from 6.6% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$180,400
+61%inflation adjusted, since 1990
from $85,100 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$720
+12%inflation adjusted, since 1990
from $489 in 1990
US average: $602
Owner-occupied
60.6%
−0.2 ptssince 1990
from 60.8% in 1990
39.4% rent
Afford Score
3.5
+45%since 1990
from 2.4 in 1990
1990 – 2024
RELATED:See current rent listings in Washington County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic92.1%(286,862)
Black0.6%(1,998)
Hispanic / Latino4.6%(14,210)
Asian4.1%(12,891)
Diversity Score27.5%(85,741)
2000
White, non-Hispanic77.7%(346,251)
Black1.1%(4,778)
Hispanic / Latino11.2%(49,735)
Asian6.6%(29,552)
Diversity Score41.8%(186,126)
Diversity Score
42
+52%since 1990
from 28 in 1990
1990 – 2024
Section 05

Education

Bachelor's degree or higher
34.5%
+4.7 ptssince 1990
from 29.8% in 1990
US average: 24.4%
High school or higher
88.9%
+0.8 ptssince 1990
from 88.2% in 1990
US average: 80.3%
Graduate degree
10.8%
+1.7 ptssince 1990
from 9.2% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
15.5 min
−29%since 1990
from 21.9 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to Washington County

Johnson County
Pop 636,906
Union County
Pop 601,863
Jefferson County
Pop 580,451
District of Columbia
Pop 693,645
Places similar to Washington County
Head to head

Compare Washington County to nearby counties

WASHINGTON COUNTY VS
Yamhill County
Income$90,063+73%
Home value$471,700+161%
Population110,024−82%
SEE FULL COMPARISON →
WASHINGTON COUNTY VS
Columbia County
Income$87,458+68%
Home value$421,600+134%
Population54,091−91%
SEE FULL COMPARISON →
WASHINGTON COUNTY VS
Tillamook County
Income$69,105+33%
Home value$430,200+138%
Population27,384−96%
SEE FULL COMPARISON →
WASHINGTON COUNTY VS
Multnomah County
Income$88,766+70%
Home value$552,700+206%
Population795,391+30%
SEE FULL COMPARISON →
Frequently asked

How many people live in Washington County, Oregon?

Washington County, Oregon has about 445,342 residents according to the 2000 Census.

What is the median household income in Washington County, Oregon?

The typical household in Washington County, Oregon earns about $52,122 a year. Half of households make more than that, and half make less.

Is Washington County, Oregon expensive?

In Washington County, Oregon, the median home is worth about $180,400, and the typical rent is about $720 a month.

How educated are people in Washington County, Oregon?

About 34.5% of adults age 25 and over in Washington County, Oregon hold a bachelor's degree or higher.

What is the poverty rate in Washington County, Oregon?

About 7.4% of people in Washington County, Oregon live below the federal poverty line.

Has Washington County, Oregon grown since 1990?

Yes, Washington County, Oregon has grown since 1990. The population has added about 133,788 residents, a change of about 43 percent over that period.

Keep going

Explore from here

134 census tracts (top 20 by population)
Census Tract 315.09Census Tract 323.02Census Tract 315.19Census Tract 324.04Census Tract 318.04Census Tract 315.20Census Tract 321.12Census Tract 316.25Census Tract 329.01Census Tract 318.13Census Tract 319.09Census Tract 302Census Tract 326.04Census Tract 326.03Census Tract 308.01Census Tract 333.01Census Tract 315.04Census Tract 315.14Census Tract 319.11Census Tract 320.01
23 ZIP codes
ZIP 97229ZIP 97124ZIP 97223ZIP 97123ZIP 97007ZIP 97006ZIP 97224ZIP 97116ZIP 97062ZIP 97008ZIP 97005ZIP 97140ZIP 97003ZIP 97225ZIP 97078ZIP 97113ZIP 97133ZIP 97119ZIP 97106ZIP 97117ZIP 97109ZIP 97125ZIP 97144
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →