Cowlitz County, WA — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
111,539
Male
55,833
50.1%
Female
55,706
49.9%
Median Age
41.1 yrs
Avg Household Size
2.5
Foreign Born
4.1%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher11.9%
High School or Higher33.9%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
7.9%
Disability
0.0%
Non-English Home
7.0%
Married
42.0%
Cowlitz County, WA has a population of 111,539 according to 2023 Census Bureau estimates. The median age is 41.1 years. The largest racial or ethnic group is White at 84.8% of the population. 11.9% of residents hold a bachelor's degree or higher. 4.1% of residents are foreign-born.