Marblemount CDP, Washington Demographics & Population 2026
As of 2026, Marblemount CDP, Washington has a total population of 318, the 519th largest city in Washington, with a median household income of $99,006, which is 4% higher than the state average. The poverty rate is 0.0%.
Key Takeaways
- An exceptionally low poverty rate of 0.0% — among the lowest in Washington.
- Only 9.1% of adults have a bachelor's degree, well below the national average of 35.0%.
- Near full employment with an unemployment rate of just 0.0%.
Marblemount CDP Quick Facts
How Marblemount CDP Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
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: 55 | National average: 60
Education
Educational Attainment (Adults 25+)
Marblemount CDP Rankings in Washington
Explore Washington Rankings
Cities Similar to Marblemount CDP
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Lyle CDP | 321 | N/A | N/A | 50.9% | 59.2% |
| Nespelem Community CDP | 322 | $97,143 | $149,400 | 14.9% | 5.8% |
| Skamokawa Valley CDP | 311 | N/A | $290,000 | 20.7% | 35.0% |
| North Sultan CDP | 295 | N/A | $440,600 | 18.9% | 14.2% |
| Lake Cavanaugh CDP | 305 | $106,875 | $601,000 | 61.3% | 0.0% |
Population Overview
Marblemount CDP is a small community located in Washington. The total population is 318. It ranks as the 519th most populous out of 631 cities and towns in Washington.
Age Demographics
The median age in Marblemount CDP is 54.5 years. This is 43% higher than the state median of 38.2 years.
Economy, Income & Housing
The median household income in Marblemount CDP is $99,006. This is 4% higher than the state median of $94,952. Compared to the national median of $78,538, household income here is 26% higher. The poverty rate stands at 0.0%. This is 100% lower than the state poverty rate of 9.9%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 0.0%. This is 100% lower than the state rate of 5.0%. The median home value is $295,300. Housing costs are 43% lower than the state median of $519,800. The home-value-to-income ratio is 3.0x. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 57% higher than the state average of 63.9%.
Race & Ethnicity
Marblemount CDP has a predominantly White (non-Hispanic) population, comprising 100.0% of all residents. The White (non-Hispanic) population is significantly higher than the state average (100.0% vs 64.3%).
Education
9.1% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. This is 77% lower than the state rate of 38.8%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 88.9%.
Data Sources & Methodology
All demographic data for Marblemount CDP, Washington is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Washington state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 631 Census-designated places in Washington. For official data, visit data.census.gov.
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Frequently Asked Questions
What is the population of Marblemount CDP, Washington?
Marblemount CDP, Washington has a population of 318 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Marblemount CDP, WA?
The median household income in Marblemount CDP is $99,006, which is 26% higher the national median of $78,538.
What is the poverty rate in Marblemount CDP, WA?
The poverty rate in Marblemount CDP is 0.0%. This means approximately 0 residents live below the federal poverty line.
What is the racial makeup of Marblemount CDP, Washington?
Marblemount CDP's population is 100.0% White, 0.0% Black, 0.0% Hispanic/Latino, and 0.0% Asian.
What is the median home value in Marblemount CDP, WA?
The median home value in Marblemount CDP is $295,300. The home-value-to-income ratio is 3.0x.
How educated is Marblemount CDP, Washington?
9.1% of adults (25+) in Marblemount CDP hold a bachelor's degree or higher, and 6.3% hold a graduate or professional degree.