Columbia County, Washington Population 2024

4,080

Columbia County, Washington's estimated 2024 population is 4,080 with a growth rate of 0.67% in the past year according to the most recent United States census data. Columbia County, Washington is the 38th largest county in Washington. The 2010 population was 4,094 and has seen a growth of -0.34% since that time.

Note: data after 2022 is projected based on recent change

32 Rows

Year
Population
Growth
Change
20294,215270.64%
20284,188270.65%
20274,161270.65%
20264,134270.66%
20254,107270.66%
20244,080270.67%
20234,053270.67%
20224,026100.25%
20214,016671.7%
20203,949-74-1.84%
20194,023-32-0.79%
20184,055451.12%
20174,010270.68%
20163,983220.56%
20153,961-23-0.58%
20143,984-18-0.45%
20134,002250.63%
20123,977-28-0.7%
20114,005-89-2.17%
20104,09400%
19904,024-33-0.81%
19804,057-382-8.61%
19704,439-130-2.85%
19604,569-291-5.99%
19504,860-689-12.42%
19405,5492244.21%
19305,325-768-12.6%
19206,093-949-13.48%
19107,042-86-1.21%
19007,1284196.25%
18906,709-394-5.55%
18807,1032,88868.52%
2024 Growth Rate
0.67% (27)
County Website
Columbia County
County Seat
Dayton
2020 Population
3,949
Area
869 mi²
Density
5 people/mi²
Growth Since 2020
3.32% (131)
Founded
November 11, 1875

Population by Race

Race
Population
Percentage (of total)
White3,25281.71%
Two or more races49912.54%
Other race1754.4%
Black or African American360.9%
Native American160.4%
Asian20.05%
Native Hawaiian or Pacific Islander00%

White

Two or more races

Other race

Black or African American

Native American

Asian

Native Hawaiian or Pacific Islander

Columbia County, Washington Population by Race

Columbia County, Washington Population Pyramid 2024

Columbia County, Washington Median Age

50.8

Total

50

Male

51.7

Female

Columbia County, Washington Adults

There are 3,288 adults, (1,150 of whom are seniors) in Columbia County, Washington.

Columbia County, Washington Age Dependency

86.2

Age Dependency Ratio

53.8

Old Age Dependency Ratio

32.4

Child Dependency Ratio

Columbia County, Washington Sex Ratio

Female2,01850.7%
Male1,96249.3%

Columbia County, Washington Population by Age

Columbia County, Washington Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All1,8042.1675.124.9
Married8992.6483.516.5
Non Family6151.1271.728.3
Male1532.7575.824.2
Female1373.0133.666.4

2.63

Average Family Size

2.16

Average Household Size

75.1%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Columbia County, Washington Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade2096.92%
Associates Degree41513.74%
Bachelors Degree48315.99%
Graduate Degree32210.66%
High School Graduate60820.13%
Less Than 9th Grade973.21%
Some College88729.36%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

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

Columbia County, Washington Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White2,5482,347687
2+ Races311299108
Hispanic1839310
Other Race1435310
Native American16140
Asian220
Black100

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

The highest rate of bachelors degrees is among 2+ races people with a rate of 34.73%.

Columbia County, Washington Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$64,250$96,447$45,972
Graduate Degree$72,396$59,531$74,009
High School Graduate$47,292$54,000$37,917
Less Than 9th Grade$33,351$36,313$32,971
Overall$50,353$57,621$38,849
Some College$49,226$55,948$42,100

$50,353

Average Earnings

$57,621

Average Male

$38,849

Average Female

Columbia County, Washington Earnings by Educational Attainment

Columbia County, Washington Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Columbia County, Washington Language

93.41% of Columbia 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 5.62% of the population.

Columbia County, Washington Language

Columbia County, Washington Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White3,2252708.37%
Other1725833.72%
Hispanic3195818.18%
Multiple495204.04%
Native141071.43%
Black35925.71%

9.31%

Overall Poverty Rate

9.91%

Male Poverty Rate

8.73%

Female Poverty Rate

Poverty in Columbia County, Washington

The race most likely to be in poverty in Columbia County, Washington is Native, with 71.43% below the poverty level.

The race least likely to be in poverty in Columbia County, Washington is Multiple, with 4.04% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.82%. Among those working part-time, it was 9.48%, and for those that did not work, the poverty rate was 18.09%.

Columbia County, Washington Poverty

rate

Rate
Poverty
Less Than 9th Grade23.59%
High School20.51%
Some College6.73%
Bachelors or Greater2.38%

Columbia County, Washington Poverty Rate by Education

rate

Rate
Poverty
Male Unemployed47.37%
Male Employed3.76%
Female Employed3.08%
Female Unemployed0%

Columbia County, Washington Poverty Rate by Employment Status and Sex

Columbia County, Washington Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$95,426$113,877
Households$68,825$88,854
Married Families$100,878$-999,999,999
Non Families$29,712$38,234

mean

median

Income by Household Type

Columbia County, Washington Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

55.5%

Overall Marriage Rate

59.2%

Male Marriage Rate

51.9%

Female Marriage Rate

Columbia County, Washington Married by Age and Sex

male

female

Columbia 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.

Columbia County, Washington Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Columbia County, Washington Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

423

Number of Veterans

333

Male Veterans

90

Female Veterans

War
Veterans
Vietnam175
First Gulf War118
Second Gulf War55
Korea16
World War II0

Columbia County, Washington Veterans by War

count

Age Group
Veterans
65 to 74148
55 to 64106
75+82
35 to 5476
18 to 3411

Columbia County, Washington Veterans by Age

count

Name
Veterans
% of Total
White3620.1329416085200147
2+ Races420.11351351351351352
Other Race190.12258064516129032
Hispanic140.05761316872427984

Columbia County, Washington Veterans by Race

Columbia County, Washington Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

9.72%

Veteran Poverty Rate

42.89%

Veteran Disability Rate

Columbia County, Washington Veterans by Education

LaborForceParticipation

57.4%

Labor Force Participation

55.4%

Employment Rate

3.5%

Unemployment Rate

Columbia County, Washington Employment by Age

LaborForceParticipation

Columbia County, Washington Employment by Race

LaborForceParticipation

Columbia 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

61.43%

Born in Columbia County, Washington

96.41%

Native Born

3.59%

Foreign Born

2.51%

Non Citizen

1.08%

Naturalized

Place of Birth

96.41% of Columbia County, Washington residents were born in the United States, with 61.43% having been born in Washington. 2.51% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Columbia County, Washington Place of Birth

Sources