San Juan County, Washington Population 2024

18,756

San Juan County, Washington's estimated 2024 population is 18,756 with a growth rate of 0.25% in the past year according to the most recent United States census data. San Juan County, Washington is the 32nd largest county in Washington. The 2010 population was 15,783 and has seen a growth of 18.84% since that time.

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202918,991470.25%
202818,944470.25%
202718,897470.25%
202618,850470.25%
202518,803470.25%
202418,756470.25%
202318,709470.25%
202218,662470.25%
202118,6157884.42%
202017,8274752.74%
201917,3523612.12%
201816,9913171.9%
201716,6744182.57%
201616,2561010.63%
201516,1551851.16%
201415,9701030.65%
201315,867610.39%
201215,806-1-0.01%
201115,807240.15%
201015,78300%
199010,0352,19728.03%
19807,8383,982103.27%
19703,85698434.26%
19602,872-373-11.49%
19503,245882.79%
19403,157601.94%
19303,097-508-14.09%
19203,60520.06%
19103,60367523.05%
19002,92885641.31%
18902,0721,124118.57%
188094839471.12%
1870554-18,437-97.08%
showing: 33 rows
2024 Growth Rate
0.25% (47)
County Website
San Juan County
County Seat
2020 Population
17,827
Area
174 mi²
Density
108 people/mi²
Growth Since 2020
5.21% (929)
Founded
October 31, 1873

San Juan County, Washington Population 2024

Population by Race

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Race
Population
Percentage (of total)
White16,11589.52%
Two or more races9115.06%
Other race4922.73%
Asian2261.26%
Black or African American1100.61%
Native American1010.56%
Native Hawaiian or Pacific Islander460.26%

White

Two or more races

Other race

Asian

Black or African American

Native American

Native Hawaiian or Pacific Islander

San Juan County, Washington Population by Race

San Juan County, Washington Population Pyramid 2024

San Juan County, Washington Median Age

56.5

Total

56

Male

57

Female

San Juan County, Washington Adults

There are 15,713 adults, (6,227 of whom are seniors) in San Juan County, Washington.

San Juan County, Washington Age Dependency

89.8

Age Dependency Ratio

65.6

Old Age Dependency Ratio

24.1

Child Dependency Ratio

San Juan County, Washington Sex Ratio

Female9,15150.84%
Male8,85049.16%

San Juan County, Washington Population by Age

San Juan County, Washington Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All8,6542.0677.522.5
Married4,5072.5588.211.8
Non Family3,3211.2266.733.3
Female5872.7459.340.7
Male2392.8570.329.7

2.48

Average Family Size

2.06

Average Household Size

77.5%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

San Juan 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

San Juan County, Washington Educational Attainment by Sex (over 25)

San Juan 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 97.2%.

The highest rate of bachelors degrees is among asian people with a rate of 56.52%.

San Juan County, Washington Educational Attainment by Race

All

Male

Female

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$42,258

Average Earnings

$54,425

Average Male

$32,702

Average Female

San Juan County, Washington Earnings by Educational Attainment

San Juan County, Washington Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

San Juan County, Washington Language

93.41% of San Juan County, Washington residents speak only English, while 6.59% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.43% of the population.

San Juan County, Washington Language

San Juan County, Washington Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White15,5441,56410.06%
Hispanic1,20126421.98%
Other46413629.31%
Multiple911839.11%
Asian2055124.88%
Native1012221.78%
Islander46919.57%

10.99%

Overall Poverty Rate

9.22%

Male Poverty Rate

12.71%

Female Poverty Rate

Poverty in San Juan County, Washington

The race most likely to be in poverty in San Juan County, Washington is Other, with 29.31% below the poverty level.

The race least likely to be in poverty in San Juan County, Washington is Multiple, with 9.11% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.87%. Among those working part-time, it was 11.1%, and for those that did not work, the poverty rate was 16.67%.

San Juan County, Washington Poverty

rate

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Rate
Poverty
Less Than 9th Grade20.9%
High School15.97%
Some College11.91%
Bachelors or Greater7.33%

San Juan County, Washington Poverty Rate by Education

rate

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Rate
Poverty
Female Unemployed32.67%
Male Unemployed18.07%
Female Employed7.42%
Male Employed4.82%

San Juan County, Washington Poverty Rate by Employment Status and Sex

San Juan County, Washington Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

San Juan County, Washington Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

58.3%

Overall Marriage Rate

60.7%

Male Marriage Rate

56.0%

Female Marriage Rate

San Juan County, Washington Married by Age and Sex

male

female

San Juan 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 55-64.

San Juan County, Washington Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

San Juan County, Washington Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,311

Number of Veterans

1,209

Male Veterans

102

Female Veterans

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San Juan County, Washington Veterans by War

count

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San Juan County, Washington Veterans by Age

count

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San Juan County, Washington Veterans by Race

San Juan County, Washington Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

5.92%

Veteran Poverty Rate

30.77%

Veteran Disability Rate

San Juan County, Washington Veterans by Education

LaborForceParticipation

53.2%

Labor Force Participation

51.4%

Employment Rate

3.2%

Unemployment Rate

San Juan County, Washington Employment by Age

LaborForceParticipation

San Juan County, Washington Employment by Race

LaborForceParticipation

San Juan 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

33.62%

Born in San Juan County, Washington

92.38%

Native Born

7.62%

Foreign Born

3.66%

Non Citizen

3.96%

Naturalized

Place of Birth

92.38% of San Juan County, Washington residents were born in the United States, with 33.62% having been born in Washington. 3.66% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

San Juan County, Washington Place of Birth

Sources