Washington County, Oregon Population 2024

597,644

Washington County, Oregon's estimated 2024 population is 597,644 with a growth rate of -0.2% in the past year according to the most recent United States census data. Washington County, Oregon is the 2nd largest county in Oregon. The 2010 population was 531,652 and has seen a growth of 12.41% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
2029591,539-1,221-0.21%
2028592,760-1,221-0.21%
2027593,981-1,221-0.21%
2026595,202-1,221-0.2%
2025596,423-1,221-0.2%
2024597,644-1,221-0.2%
2023598,865-1,221-0.2%
2022600,086-2,367-0.39%
2021602,4531,3230.22%
2020601,1301970.03%
2019600,9333,9030.65%
2018597,0305,0610.85%
2017591,9696,6111.13%
2016585,35812,4032.16%
2015572,95510,4031.85%
2014562,5527,1091.28%
2013555,4436,7921.24%
2012548,6517,6101.41%
2011541,0419,3891.77%
2010531,65200%
1990311,55465,74626.75%
1980245,80887,88855.65%
1970157,92065,68371.21%
196092,23730,96850.54%
195061,26922,07556.32%
194039,1948,91929.46%
193030,2753,89914.78%
192026,3764,85422.55%
191021,5227,05548.77%
190014,4672,49520.84%
189011,9724,89069.05%
18807,0822,82166.21%
18704,2611,46052.12%
18602,8011495.62%
18502,652-588,887-99.55%
2024 Growth Rate
-0.2% (-1,221)
County Website
Washington County
State
Oregon
County Seat
Hillsboro
2020 Population
601,130
Area
724 mi²
Density
825 people/mi²
Growth Since 2020
-0.58% (-3,486)
Founded
July 5, 1843

Population by Race

Race
Population
Percentage (of total)
White412,13568.74%
Asian65,75210.97%
Two or more races63,10010.52%
Other race37,0956.19%
Black or African American13,7852.3%
Native American4,5580.76%
Native Hawaiian or Pacific Islander3,1160.52%

White

Asian

Two or more races

Other race

Black or African American

Native American

Native Hawaiian or Pacific Islander

Washington County, Oregon Population by Race

Washington County, Oregon Population Pyramid 2024

Washington County, Oregon Median Age

37.5

Total

36.7

Male

38.3

Female

Washington County, Oregon Adults

There are 467,023 adults, (83,963 of whom are seniors) in Washington County, Oregon.

Washington County, Oregon Age Dependency

56.5

Age Dependency Ratio

21.9

Old Age Dependency Ratio

34.6

Child Dependency Ratio

Washington County, Oregon Sex Ratio

Female299,87050.02%
Male299,67149.98%

Washington County, Oregon Population by Age

Washington County, Oregon Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All230,1222.5760.939.1
Married119,4103.276.823.2
Non Family78,2621.3742.857.2
Female21,8833.1745.654.4
Male10,5673.1746.753.3

3.09

Average Family Size

2.57

Average Household Size

60.9%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Washington County, Oregon Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade14,0083.36%
Associates Degree36,3298.71%
Bachelors Degree116,61527.95%
Graduate Degree74,55317.87%
High School Graduate71,67317.18%
Less Than 9th Grade15,7583.78%
Some College88,26821.16%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Washington County, Oregon Educational Attainment by Sex (over 25)

Washington County, Oregon Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White282,357273,127134,361
Hispanic56,29940,60510,685
Asian47,74944,75832,122
2+ Races32,46928,35412,256
Other Race22,08615,2763,205
Black9,0628,4544,384
Native American3,0742,518573
Islander2,2211,873608

The highest rate of high school graduation is among white people with a rate of 96.73%.

The highest rate of bachelors degrees is among asian people with a rate of 67.27%.

Washington County, Oregon Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$75,240$92,903$61,226
Graduate Degree$104,537$128,067$83,224
High School Graduate$40,936$46,706$33,527
Less Than 9th Grade$34,352$40,063$26,189
Overall$58,550$69,706$48,063
Some College$49,050$57,775$41,306

$58,550

Average Earnings

$69,706

Average Male

$48,063

Average Female

Washington County, Oregon Earnings by Educational Attainment

Washington County, Oregon Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Washington County, Oregon Language

74.62% of Washington County, Oregon residents speak only English, while 25.38% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 12.03% of the population.

Washington County, Oregon Language

Washington County, Oregon Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White371,75726,0117%
Hispanic103,59113,12812.67%
Other36,7984,95913.48%
Multiple62,7324,7267.53%
Asian65,4443,7245.69%
Black13,5512,73720.2%
Native4,50451111.35%
Islander3,09040513.11%

8.16%

Overall Poverty Rate

7.24%

Male Poverty Rate

9.09%

Female Poverty Rate

Poverty in Washington County, Oregon

The race most likely to be in poverty in Washington County, Oregon is Black, with 20.2% below the poverty level.

The race least likely to be in poverty in Washington County, Oregon is Asian, with 5.69% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.34%. Among those working part-time, it was 11.14%, and for those that did not work, the poverty rate was 16.2%.

Washington County, Oregon Poverty

rate

Rate
Poverty
Less Than 9th Grade15.72%
High School11.23%
Some College7.24%
Bachelors or Greater3.79%

Washington County, Oregon Poverty Rate by Education

rate

Rate
Poverty
Male Unemployed22.03%
Female Unemployed19.49%
Female Employed4.64%
Male Employed2.95%

Washington County, Oregon Poverty Rate by Employment Status and Sex

Washington County, Oregon Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$119,312$148,906
Households$100,121$127,688
Married Families$136,321$165,911
Non Families$62,030$79,753

mean

median

Income by Household Type

Washington County, Oregon Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

52.3%

Overall Marriage Rate

53.9%

Male Marriage Rate

50.7%

Female Marriage Rate

Washington County, Oregon Married by Age and Sex

male

female

Washington County, Oregon Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.

Washington County, Oregon Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Washington County, Oregon Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

27,849

Number of Veterans

25,154

Male Veterans

2,695

Female Veterans

War
Veterans
Vietnam8,930
Second Gulf War6,694
First Gulf War6,366
Korea1,616
World War II495

Washington County, Oregon Veterans by War

count

Age Group
Veterans
35 to 547,875
75+6,608
65 to 746,175
55 to 644,579
18 to 342,612

Washington County, Oregon Veterans by Age

count

Name
Veterans
% of Total
White24,2647.33%
Hispanic1,9692.85%
2+ Races1,4713.66%
Asian8471.62%
Other Race6312.42%
Black3463.32%
Native American1955.33%
Islander953.84%

Washington County, Oregon Veterans by Race

Washington County, Oregon Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.9%

Veteran Poverty Rate

26.16%

Veteran Disability Rate

Washington County, Oregon Veterans by Education

LaborForceParticipation

68.9%

Labor Force Participation

65.6%

Employment Rate

4.6%

Unemployment Rate

Washington County, Oregon Employment by Age

LaborForceParticipation

Washington County, Oregon Employment by Race

LaborForceParticipation

Washington County, Oregon Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

40.92%

Born in Washington County, Oregon

81.96%

Native Born

18.04%

Foreign Born

9.08%

Non Citizen

8.96%

Naturalized

Place of Birth

81.96% of Washington County, Oregon residents were born in the United States, with 40.92% having been born in Oregon. 9.08% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Washington County, Oregon Place of Birth

Sources