Adams County, Washington Population 2024

20,742

Adams County, Washington's estimated 2024 population is 20,742 with a growth rate of -0.37% in the past year according to the most recent United States census data. Adams County, Washington is the 31st largest county in Washington. The 2010 population was 18,791 and has seen a growth of 10.38% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
202920,352-78-0.38%
202820,430-78-0.38%
202720,508-78-0.38%
202620,586-78-0.38%
202520,664-78-0.38%
202420,742-78-0.37%
202320,820-78-0.37%
202220,8982511.22%
202120,647400.19%
202020,6076483.25%
201919,9593191.62%
201819,640660.34%
201719,5742631.36%
201619,3111030.54%
201519,208540.28%
201419,154740.39%
201319,0801440.76%
201218,936600.32%
201118,876850.45%
201018,79100%
199013,6033362.53%
198013,2671,25310.43%
197012,0142,08521%
19609,9293,34550.8%
19506,5843756.04%
19406,209-1,510-19.56%
19307,719-1,904-19.79%
19209,623-1,297-11.88%
191010,9206,080125.62%
19004,8402,742130.7%
18902,098-18,254-89.69%
2024 Growth Rate
-0.37% (-78)
County Website
Adams County
County Seat
Ritzville
2020 Population
20,607
Area
1925 mi²
Density
11 people/mi²
Growth Since 2020
0.66% (135)
Founded
November 28, 1883

Population by Race

Race
Population
Percentage (of total)
White9,88047.75%
Other race5,88928.46%
Two or more races4,14320.02%
Native American5162.49%
Asian1290.62%
Black or African American770.37%
Native Hawaiian or Pacific Islander560.27%

White

Other race

Two or more races

Native American

Asian

Black or African American

Native Hawaiian or Pacific Islander

Adams County, Washington Population by Race

Adams County, Washington Population Pyramid 2024

Adams County, Washington Median Age

29.2

Total

29.1

Male

29.4

Female

Adams County, Washington Adults

There are 13,445 adults, (2,446 of whom are seniors) in Adams County, Washington.

Adams County, Washington Age Dependency

88.1

Age Dependency Ratio

22.2

Old Age Dependency Ratio

65.9

Child Dependency Ratio

Adams County, Washington Sex Ratio

Female10,08448.74%
Male10,60651.26%

Adams County, Washington Population by Age

Adams County, Washington Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All6,3013.2369.130.9
Married3,5723.7376.823.2
Non Family1,3931.161.238.8
Female9743.8949.950.1
Male3624.6974.625.4

3.7

Average Family Size

3.23

Average Household Size

69.1%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Adams County, Washington Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade8977.92%
Associates Degree8657.63%
Bachelors Degree1,15010.15%
Graduate Degree5985.28%
High School Graduate3,32329.32%
Less Than 9th Grade2,51022.15%
Some College1,98917.55%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

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

Adams County, Washington Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
Hispanic6,0303,047354
White4,8224,4391,301
Other Race3,0461,19085
2+ Races1,602949176
Native American3121020
Asian12110542
Black77550
Islander56560

The highest rate of high school graduation is among islander people with a rate of 100%.

The highest rate of bachelors degrees is among asian people with a rate of 34.71%.

Adams County, Washington Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$67,734$69,667$44,397
Graduate Degree$102,731$108,490$99,821
High School Graduate$34,421$43,633$28,656
Less Than 9th Grade$28,402$29,769$20,568
Overall$36,620$42,822$29,484
Some College$41,800$52,679$34,635

$36,620

Average Earnings

$42,822

Average Male

$29,484

Average Female

Adams County, Washington Earnings by Educational Attainment

Adams County, Washington Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Adams County, Washington Language

48.63% of Adams County, Washington residents speak only English, while 51.37% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 48.79% of the population.

Adams County, Washington Language

Adams County, Washington Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
Hispanic13,2513,49526.38%
Other5,8851,48325.2%
Multiple4,1411,20729.15%
White6,4715408.34%
Native51616231.4%
Asian1216553.72%
Black684058.82%

20.49%

Overall Poverty Rate

19.59%

Male Poverty Rate

21.44%

Female Poverty Rate

Poverty in Adams County, Washington

The race most likely to be in poverty in Adams County, Washington is Black, with 58.82% below the poverty level.

The race least likely to be in poverty in Adams County, Washington is White, with 8.34% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 4.51%. Among those working part-time, it was 23.85%, and for those that did not work, the poverty rate was 25.17%.

Adams County, Washington Poverty

rate

Rate
Poverty
Less Than 9th Grade23.79%
High School15.78%
Some College11.49%
Bachelors or Greater4.1%

Adams County, Washington Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed45.13%
Male Unemployed16.35%
Female Employed12.63%
Male Employed9.18%

Adams County, Washington Poverty Rate by Employment Status and Sex

Adams County, Washington Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$70,719$86,519
Households$65,042$82,379
Married Families$82,778$-999,999,999
Non Families$34,583$58,382

mean

median

Income by Household Type

Adams County, Washington Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

52.3%

Overall Marriage Rate

52.0%

Male Marriage Rate

52.5%

Female Marriage Rate

Adams County, Washington Married by Age and Sex

male

female

Adams County, Washington Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.

Adams County, Washington Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Adams County, Washington Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

511

Number of Veterans

469

Male Veterans

42

Female Veterans

War
Veterans
Vietnam211
Second Gulf War123
First Gulf War108
Korea38
World War II0

Adams County, Washington Veterans by War

count

Age Group
Veterans
65 to 74163
75+121
35 to 5484
18 to 3481
55 to 6462

Adams County, Washington Veterans by Age

count

Name
Veterans
% of Total
White3374.95%
Hispanic1061.38%
2+ Races813.75%
Other Race401.07%
Black2431.17%
Native American153.26%
Asian1410.85%

Adams County, Washington Veterans by Race

Adams County, Washington Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

4.22%

Veteran Poverty Rate

39.16%

Veteran Disability Rate

Adams County, Washington Veterans by Education

LaborForceParticipation

61.5%

Labor Force Participation

59%

Employment Rate

4.1%

Unemployment Rate

Adams County, Washington Employment by Age

LaborForceParticipation

Adams County, Washington Employment by Race

LaborForceParticipation

Adams 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

55.6%

Born in Adams County, Washington

76.88%

Native Born

23.12%

Foreign Born

17.84%

Non Citizen

5.27%

Naturalized

Place of Birth

76.88% of Adams County, Washington residents were born in the United States, with 55.6% having been born in Washington. 17.84% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Adams County, Washington Place of Birth

Sources