Cosmopolis, Washington Demographics & Population 2026
During the 2020–2024 ACS period, Cosmopolis, Washington had a total population of 2,202, the 302nd largest city in Washington, with a median household income of $84,853, which is 14% lower than the state average. The poverty rate is 10.3%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Cosmopolis Quick Facts
How Cosmopolis Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 2,301 | 2,202 | -4.3% |
| Median household income | $80,132 | $84,853 | +5.9% |
| Median home value | $280,700 | $317,000 | +12.9% |
How Cosmopolis Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 56 | National average: 61
Education
Educational Attainment (Adults 25+)
Cosmopolis Rankings in Washington
Explore Washington Rankings
Other Cities in Grays Harbor County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Aberdeen | 17,088 | $52,195 | 23.8% | $237,300 |
| Hoquiam | 8,800 | $49,795 | 17.2% | $228,200 |
| Ocean Shores | 7,302 | $58,202 | 12.3% | $383,500 |
| Montesano | 4,183 | $67,540 | 4.9% | $354,300 |
| Elma | 3,483 | $78,086 | 24.9% | $409,600 |
| Central Park | 3,206 | $99,127 | 6.4% | $335,500 |
| Westport | 2,217 | $64,750 | 7.3% | $196,600 |
| McCleary | 2,094 | $77,813 | 10.4% | $351,700 |
| Oakville | 878 | $63,893 | 19.4% | $230,800 |
| Taholah | 833 | $45,114 | 34.7% | $101,300 |
Cities Similar to Cosmopolis
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| South Creek | 2,191 | $84,759 | $610,600 | 7.6% | 3.2% |
| Winlock | 2,140 | $80,451 | $361,700 | 17.2% | 14.9% |
| Walla Walla East | 2,099 | $89,951 | $607,900 | 29.3% | 3.5% |
| Kitsap Lake | 2,186 | $100,602 | $475,900 | 21.1% | 12.7% |
| McCleary | 2,094 | $77,813 | $351,700 | 19.1% | 10.4% |
Population Overview
Cosmopolis is a small community located in Washington, within Grays Harbor County. The total population is 2,202. It ranks as the 302nd most populous out of 628 Census-designated places in Washington.
Age Demographics
The median age in Cosmopolis is 39.2 years. This is 2% higher than the state median of 38.3 years. With 28.5% of the population under 18, Cosmopolis has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Cosmopolis is $84,853. This is 14% lower than the state median of $98,141. It is also 5% higher than the national median of $80,734. The poverty rate stands at 10.3%. This is 4% higher than the state poverty rate of 9.9%. The unemployment rate is 5.8%. This is 14% higher than the state rate of 5.1%. The median home value is $317,000. Housing costs are 44% lower than the state median of $564,600. The home-value-to-income ratio is 3.7x. 82.7% of occupied housing units are owner-occupied. This homeownership rate is 30% higher than the state average of 63.8%.
Race & Ethnicity
The largest racial or ethnic group in Cosmopolis is White (non-Hispanic), making up 83.4% of the population. Hispanic or Latino residents account for 9.4%. The Asian population (4.1%) is well below the state average of 9.7%.
Education
26.6% of residents aged 25 and older hold a bachelor's degree or higher. This is 33% lower than the state rate of 39.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.8%.
Data Sources & Methodology
All demographic data for Cosmopolis, Washington is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Washington state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 628 Census-designated places in Washington. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Cosmopolis, Washington?
Cosmopolis, Washington has a population of 2,202 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Cosmopolis, WA?
The median household income in Cosmopolis is $84,853, which is 5% higher than the national median of $80,734.
What is the poverty rate in Cosmopolis, WA?
The poverty rate in Cosmopolis is 10.3%. This means approximately 224 residents live below the federal poverty line.
What is the racial makeup of Cosmopolis, Washington?
Cosmopolis's population is 83.4% White, 0.0% Black, 9.4% Hispanic/Latino, and 4.1% Asian.
What is the median home value in Cosmopolis, WA?
The median home value in Cosmopolis is $317,000. The home-value-to-income ratio is 3.7x.
How educated is Cosmopolis, Washington?
26.6% of adults (25+) in Cosmopolis hold a bachelor's degree or higher, and 9.7% hold a graduate or professional degree.