Washington County, Oregon Population 2023

621,570

Washington County, Oregon's estimated 2023 population is 621,570 with a growth rate of 1.15% 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 529,710 and has seen a growth of 17.34% since that time.

Note: data after 2021 is projected based on recent change

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2023 Growth Rate
1.15% (7,066)
County Website
Washington County
State
Oregon
Founded
July 5, 1843
County Seat
Hillsboro
2010 Population
529,710
Growth Since 2010
17.34% (91,860)

Washington County, Oregon Population 2023

Population by Race

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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 2023

Washington County, Oregon Median Age

37.3

Total

36.4

Male

38

Female

Washington County, Oregon Adults

There are 461,425 adults, (80,195 of whom are seniors) in Washington County, Oregon.

Washington County, Oregon Age Dependency

56.6

Age Dependency Ratio

21

Old Age Dependency Ratio

35.6

Child Dependency Ratio

Washington County, Oregon Sex Ratio

Female299,61050.19%
Male297,35949.81%

Washington County, Oregon Population by Age

Washington County, Oregon Renter vs Owner Occupied by Household Type

3.11

Average Family Size

2.61

Average Household Size

61.1%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Washington County, Oregon Households and Families

Male

Female

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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

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The highest rate of high school graduation is among white people with a rate of 86.27%.

The highest rate of bachelors degrees is among asian people with a rate of 60.08%.

Washington County, Oregon Educational Attainment by Race

All

Male

Female

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$52,966

Average Earnings

$63,580

Average Male

$43,147

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

75.12% of Washington County, Oregon residents speak only English, while 24.88% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 11.94% of the population.

Washington County, Oregon Language

Washington County, Oregon Poverty by Race

rate

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8.02%

Overall Poverty Rate

7.37%

Male Poverty Rate

8.66%

Female Poverty Rate

Poverty in Washington County, Oregon

The race most likely to be in poverty in Washington County, Oregon is Black, with 23.6% below the poverty level.

The race least likely to be in poverty in Washington County, Oregon is Islander, with 5.34% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.44%. Among those working part-time, it was 11.08%, and for those that did not work, the poverty rate was 15.78%.

Washington County, Oregon Poverty

rate

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Washington County, Oregon Poverty Rate by Education

rate

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Washington County, Oregon Poverty Rate by Employment Status and Sex

Washington County, Oregon Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Washington County, Oregon Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

52.7%

Overall Marriage Rate

54.3%

Male Marriage Rate

51.1%

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

28,450

Number of Veterans

25,837

Male Veterans

2,613

Female Veterans

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Washington County, Oregon Veterans by War

count

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Washington County, Oregon Veterans by Age

count

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Washington County, Oregon Veterans by Race

Washington County, Oregon Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.18%

Veteran Poverty Rate

26.31%

Veteran Disability Rate

Washington County, Oregon Veterans by Education

LaborForceParticipation

69.1%

Labor Force Participation

65.8%

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

40.56%

Born in Washington County, Oregon

80.66%

Native Born

17.62%

Foreign Born

9.18%

Non Citizen

8.44%

Naturalized

Place of Birth

80.66% of Washington County, Oregon residents were born in the United States, with 40.56% having been born in Oregon. 9.18% 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