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Washington · Census place 14870

Cosmopolis, WA population, income and ZIP codes

Quick answer

The population of the city of Cosmopolis, Washington (Cosmopolis, WA — Census place “Cosmopolis city”) is 2,301 residents, ranking #297 of 639 places in Washington. Median household income is $80,132, the median home is worth $280,700 and median gross rent runs $913 a month. Looking for the Cosmopolis Washington ZIP code list? 1 ZIP codes serve Cosmopolis, WA: 98537.

Population
2,301Cosmopolis city residents
Median household income
$80,132Past 12 months, inflation adjusted
Median home value
$280,700Owner-occupied units
Median gross rent
$913Rent plus utilities, monthly
Median age
40 yrsAll residents
Homeownership rate
80.6%Owner-occupied households

Cosmopolis ZIP codes (Washington)

Census ZCTAs whose delivery area overlaps Cosmopolis.

The Cosmopolis WA ZIP code list below covers 1 ZIP code. Open any one for its population, income, housing and rent profile.

What the numbers mean in Cosmopolis city

Housing cost measured against local earnings.

A household earning the Cosmopolis city median would spend about 13.7% of gross income on the median rent. The 30% mark is the federal threshold for cost burden, so anything above it signals a stretched rental market. The median home costs 3.5× the median household income; nationally that ratio sits near 4.5×. Poverty affects 6.3% of residents and 80.6% of households own their home.

Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year

Cosmopolis city, WA in context

How this area compares with national benchmarks.

Cosmopolis city is a small town in Washington, with 2,301 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #297 of 639 ranked by population — larger than 53% of them. The median age here is 40 years against 39.1 nationally, a slightly older profile than the country as a whole. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in Cosmopolis city earn a median of $80,132 a year, 2% above the national figure of $78,538 and 12% below the $90,592 median for the 393 Washington cities we cover. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 6.3% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Cosmopolis city is valued at $280,700, 7.5% below the national figure and 40% below the $468,400 peer median, while median gross rent runs $913 a month, 35.1% below the national figure, or roughly $10,956 across a full year. A household on the local median income would put about 13.7% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 3.5×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 80.6% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

All values below were released by the Census for this exact geography, with no gap-filling on our side. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.

Compare with nearby places

Places of similar size in Washington.

More Washington coverage.

Frequently asked questions

Common questions about this area.

What is the population of Cosmopolis city?
Cosmopolis city has 2,301 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #297 of 639 in Washington.
What is the median household income in Cosmopolis city?
Median household income in Cosmopolis city is $80,132 a year, 2% above the national figure of $78,538.
How much does it cost to rent or buy in Cosmopolis city?
Median gross rent is $913 a month and the median home value is $280,700, so rent absorbs about 13.7% of median household income.
Is Cosmopolis city affordable compared with the rest of the US?
Homes cost about 3.5× the local median income here versus roughly 3.9× nationally, so Cosmopolis city is more affordable to buy in than the typical US market, and rent takes 13.7% of median income against the 30% cost-burden line.
How current is this Cosmopolis city data?
All figures come from the US Census Bureau American Community Survey 2019-2023 ACS 5-year five-year estimates. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.