Jefferson County, Washington Population 2024

33,645

Jefferson County, Washington's estimated 2024 population is 33,645 with a growth rate of 0.08% in the past year according to the most recent United States census data. Jefferson County, Washington is the 27th largest county in Washington. The 2010 population was 29,899 and has seen a growth of 12.53% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202933,785280.08%
202833,757280.08%
202733,729280.08%
202633,701280.08%
202533,673280.08%
202433,645280.08%
202333,617280.08%
202233,589280.08%
202133,5614981.51%
202033,0637162.21%
201932,3474831.52%
201831,8646001.92%
201731,2643151.02%
201630,9495731.89%
201530,3762040.68%
201430,1721510.5%
201330,0212130.71%
201229,808-50-0.17%
201129,858-41-0.14%
201029,899
199020,1464,18126.19%
198015,9655,30449.75%
197010,6611,02210.6%
19609,639-1,979-17.03%
195011,6182,70030.28%
19408,9185726.85%
19308,3461,78927.28%
19206,557-1,780-21.35%
19108,3372,62545.96%
19005,712-2,656-31.74%
18908,3686,656388.79%
18801,71244435.02%
18701,268737138.79%
1860531-33,254-98.43%
showing: 34 rows
2024 Growth Rate
0.08% (28)
County Website
Jefferson County
County Seat
2010 Population
29,899
Area
1804 mi²
Density
19 people/mi²
Growth Since 2010
12.53% (3,746)
Founded
December 22, 1852

Jefferson County, Washington Population 2024

Population by Race

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Race
Population
Percentage (of total)
White29,03987.98%
Two or more races2,1216.43%
Other race6692.03%
Native American5221.58%
Asian4701.42%
Black or African American1400.42%
Native Hawaiian or Pacific Islander450.14%
showing: 7 rows

White

Two or more races

Other race

Native American

Asian

Black or African American

Native Hawaiian or Pacific Islander

Jefferson County, Washington Population by Race

Jefferson County, Washington Population Pyramid 2024

Jefferson County, Washington Median Age

59.4

Total

57.8

Male

60.2

Female

Jefferson County, Washington Adults

There are 29,150 adults, (12,732 of whom are seniors) in Jefferson County, Washington.

Jefferson County, Washington Age Dependency

101

Age Dependency Ratio

77.5

Old Age Dependency Ratio

23.5

Child Dependency Ratio

Jefferson County, Washington Sex Ratio

Female16,81750.95%
Male16,18949.05%

Jefferson County, Washington Population by Age

Jefferson County, Washington Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All15,8592.0480.419.6
Married7,8292.5189.710.3
Non Family6,6981.2671.628.4
Female8883.3565.734.3
Male4442.7777.322.7
showing: 5 rows

2.54

Average Family Size

2.04

Average Household Size

80.4%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Jefferson County, Washington 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

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

Jefferson County, Washington 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 97.72%.

The highest rate of bachelors degrees is among asian people with a rate of 51.24%.

Jefferson County, Washington Educational Attainment by Race

All

Male

Female

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$36,638

Average Earnings

$40,963

Average Male

$35,273

Average Female

Jefferson County, Washington Earnings by Educational Attainment

Jefferson County, Washington Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Jefferson County, Washington Language

94.21% of Jefferson County, Washington residents speak only English, while 5.79% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 2.36% of the population.

Jefferson County, Washington Language

Jefferson County, Washington Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White28,0273,49212.46%
Multiple1,91546124.07%
Hispanic1,31232424.7%
Native49710420.93%
Other660619.24%
Asian4425311.99%
Black1144438.6%
showing: 7 rows

13.83%

Overall Poverty Rate

12.19%

Male Poverty Rate

15.36%

Female Poverty Rate

Poverty in Jefferson County, Washington

The race most likely to be in poverty in Jefferson County, Washington is Black, with 38.6% below the poverty level.

The race least likely to be in poverty in Jefferson County, Washington is Other, with 9.24% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.41%. Among those working part-time, it was 12.5%, and for those that did not work, the poverty rate was 16.7%.

Jefferson County, Washington Poverty

rate

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Rate
Poverty
Less Than 9th Grade32.32%
Some College13.3%
Bachelors or Greater10.35%
High School9.28%
showing: 4 rows

Jefferson County, Washington Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed24.44%
Male Unemployed9.69%
Female Employed8.59%
Male Employed2.82%
showing: 4 rows

Jefferson County, Washington Poverty Rate by Employment Status and Sex

Jefferson County, Washington Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Jefferson County, Washington Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

55.6%

Overall Marriage Rate

57.6%

Male Marriage Rate

53.6%

Female Marriage Rate

Jefferson County, Washington Married by Age and Sex

male

female

Jefferson County, Washington Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Jefferson County, Washington Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Jefferson County, Washington Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

3,621

Number of Veterans

3,337

Male Veterans

284

Female Veterans

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Jefferson County, Washington Veterans by War

count

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Jefferson County, Washington Veterans by Age

count

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Jefferson County, Washington Veterans by Race

Jefferson County, Washington Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

9.13%

Veteran Poverty Rate

35.16%

Veteran Disability Rate

Jefferson County, Washington Veterans by Education

LaborForceParticipation

43.2%

Labor Force Participation

39.2%

Employment Rate

8.4%

Unemployment Rate

Jefferson County, Washington Employment by Age

LaborForceParticipation

Jefferson County, Washington Employment by Race

LaborForceParticipation

Jefferson County, Washington 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

39.87%

Born in Jefferson County, Washington

95.46%

Native Born

4.54%

Foreign Born

1.77%

Non Citizen

2.77%

Naturalized

Place of Birth

95.46% of Jefferson County, Washington residents were born in the United States, with 39.87% having been born in Washington. 1.77% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Jefferson County, Washington Place of Birth

Sources