Cowlitz County, Washington Population 2024

113,664

Cowlitz County, Washington's estimated 2024 population is 113,664 with a growth rate of 0.71% in the past year according to the most recent United States census data. Cowlitz County, Washington is the 12th largest county in Washington. The 2010 population was 102,358 and has seen a growth of 11.05% since that time.

Note: data after 2022 is projected based on recent change
Year
Population
Growth
Change
2029117,6648000.68%
2028116,8648000.69%
2027116,0648000.69%
2026115,2648000.7%
2025114,4648000.7%
2024113,6648000.71%
2023112,8648000.71%
2022112,0643790.34%
2021111,6856710.6%
2020111,0146250.57%
2019110,3891,7161.58%
2018108,6731,8731.75%
2017106,8002,0401.95%
2016104,7601,7291.68%
2015103,0311,2201.2%
2014101,8113140.31%
2013101,497-172-0.17%
2012101,669-644-0.63%
2011102,313-45-0.04%
2010102,35800%
199082,1192,5713.23%
198079,54810,93215.93%
197068,61610,81518.71%
196057,8014,4328.3%
195053,36913,21432.91%
194040,1558,24925.85%
193031,90620,115170.6%
192011,791-770-6.13%
191012,5614,68459.46%
19007,8771,96033.12%
18905,9173,855186.95%
18802,0621,332182.47%
187073032479.8%
1860406-117,258-99.65%
2024 Growth Rate
0.71% (800)
County Website
Cowlitz County
County Seat
Kelso
2020 Population
111,014
Area
1141 mi²
Density
100 people/mi²
Growth Since 2020
2.39% (2,650)
Founded
April 21, 1854

Population by Race

Race
Population
Percentage (of total)
White94,55184.77%
Two or more races10,2429.18%
Other race3,0802.76%
Asian1,3111.18%
Native American1,2431.11%
Black or African American7790.7%
Native Hawaiian or Pacific Islander3330.3%

White

Two or more races

Other race

Asian

Native American

Black or African American

Native Hawaiian or Pacific Islander

Cowlitz County, Washington Population by Race

Cowlitz County, Washington Population Pyramid 2024

Cowlitz County, Washington Median Age

41.1

Total

39.8

Male

42.4

Female

Cowlitz County, Washington Adults

There are 86,297 adults, (21,762 of whom are seniors) in Cowlitz County, Washington.

Cowlitz County, Washington Age Dependency

72.8

Age Dependency Ratio

33.7

Old Age Dependency Ratio

39.1

Child Dependency Ratio

Cowlitz County, Washington Sex Ratio

Female55,70649.94%
Male55,83350.06%

Cowlitz County, Washington Population by Age

Cowlitz County, Washington Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All43,4092.5466.233.8
Married21,1963.1379.620.4
Non Family14,7491.2853.646.4
Female5,2653.347.952.1
Male2,1993.4964.935.1

3.05

Average Family Size

2.54

Average Household Size

66.2%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Cowlitz County, Washington Households and Families

Male

Female

Education Attained
Count
Percentage
9th to 12th Grade5,1876.65%
Associates Degree9,95712.77%
Bachelors Degree8,97311.51%
Graduate Degree4,2905.5%
High School Graduate24,50531.42%
Less Than 9th Grade2,6553.4%
Some College22,42028.75%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

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

Cowlitz County, Washington Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

Race
Total
High School
Bachelors
White66,33760,73511,842
Hispanic5,4213,980379
2+ Races5,3344,597760
Other Race1,581997205
Asian1,108814293
Native American76262139
Black52647935
Islander22217814

The highest rate of high school graduation is among white people with a rate of 91.56%.

The highest rate of bachelors degrees is among asian people with a rate of 26.44%.

Cowlitz County, Washington Educational Attainment by Race

All

Male

Female

Name
Average
Male
Female
Bachelors Degree$61,953$82,790$49,622
Graduate Degree$76,570$75,379$78,611
High School Graduate$40,772$57,041$29,362
Less Than 9th Grade$33,398$40,772$30,641
Overall$49,245$60,531$36,228
Some College$51,396$63,049$36,830

$49,245

Average Earnings

$60,531

Average Male

$36,228

Average Female

Cowlitz County, Washington Earnings by Educational Attainment

Cowlitz County, Washington Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Cowlitz County, Washington Language

92.19% of Cowlitz County, Washington residents speak only English, while 7.81% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 5.56% of the population.

Cowlitz County, Washington Language

Cowlitz County, Washington Poverty by Race

rate

Name
Total
In Poverty
Poverty Rate
White88,55910,49611.85%
Hispanic11,2162,26920.23%
Multiple10,1081,99719.76%
Other3,05641713.65%
Native1,20131626.31%
Black75520527.15%
Asian1,3111027.78%
Islander3323911.75%

13%

Overall Poverty Rate

11.92%

Male Poverty Rate

14.08%

Female Poverty Rate

Poverty in Cowlitz County, Washington

The race most likely to be in poverty in Cowlitz County, Washington is Black, with 27.15% below the poverty level.

The race least likely to be in poverty in Cowlitz County, Washington is Asian, with 7.78% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.23%. Among those working part-time, it was 13.97%, and for those that did not work, the poverty rate was 20.04%.

Cowlitz County, Washington Poverty

rate

Rate
Poverty
Less Than 9th Grade23.41%
High School14.8%
Some College9.24%
Bachelors or Greater7.17%

Cowlitz County, Washington Poverty Rate by Education

rate

Rate
Poverty
Female Unemployed27.32%
Male Unemployed17.35%
Female Employed6.46%
Male Employed4.72%

Cowlitz County, Washington Poverty Rate by Employment Status and Sex

Cowlitz County, Washington Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

Name
Median
Mean
Families$86,738$106,897
Households$72,932$92,523
Married Families$102,036$121,273
Non Families$40,767$57,106

mean

median

Income by Household Type

Cowlitz County, Washington Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

49.8%

Overall Marriage Rate

50.3%

Male Marriage Rate

49.2%

Female Marriage Rate

Cowlitz County, Washington Married by Age and Sex

male

female

Cowlitz 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.

Cowlitz County, Washington Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Cowlitz County, Washington Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

8,816

Number of Veterans

7,929

Male Veterans

887

Female Veterans

War
Veterans
Vietnam3,262
Second Gulf War1,700
First Gulf War1,632
Korea336
World War II73

Cowlitz County, Washington Veterans by War

count

Age Group
Veterans
65 to 742,271
75+2,176
35 to 542,056
55 to 641,863
18 to 34450

Cowlitz County, Washington Veterans by Age

count

Name
Veterans
% of Total
White8,00110.68%
2+ Races5017.83%
Hispanic2984.36%
Other Race1336.64%
Islander8936.03%
Native American687.46%
Asian242.01%

Cowlitz County, Washington Veterans by Race

Cowlitz County, Washington Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

8.94%

Veteran Poverty Rate

34.82%

Veteran Disability Rate

Cowlitz County, Washington Veterans by Education

LaborForceParticipation

55.3%

Labor Force Participation

52.4%

Employment Rate

5.1%

Unemployment Rate

Cowlitz County, Washington Employment by Age

LaborForceParticipation

Cowlitz County, Washington Employment by Race

LaborForceParticipation

Cowlitz 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

52.18%

Born in Cowlitz County, Washington

95.9%

Native Born

4.1%

Foreign Born

2.22%

Non Citizen

1.88%

Naturalized

Place of Birth

95.9% of Cowlitz County, Washington residents were born in the United States, with 52.18% having been born in Washington. 2.22% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Cowlitz County, Washington Place of Birth

Sources