Cottage Lake CDP, Washington Demographics & Population 2026
As of 2026, Cottage Lake CDP, Washington has a total population of 23,170, the 59th largest city in Washington, with a median household income of $197,331, which is 108% higher than the state average. The poverty rate is 3.1%.
Key Takeaways
- Household income is 108% above the state average — one of the wealthiest communities in Washington.
- An exceptionally low poverty rate of 3.1% — among the lowest in Washington.
- 67.7% of adults hold a bachelor's degree or higher — top 10% in Washington.
Cottage Lake CDP Quick Facts
How Cottage Lake 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+)
Cottage Lake CDP Rankings in Washington
Explore Washington Rankings
Cities Similar to Cottage Lake CDP
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Union Hill-Novelty Hill CDP | 23,272 | $181,820 | $1,174,100 | 71.8% | 5.1% |
| Mercer Island city | 25,282 | $202,359 | $1,884,200 | 78.8% | 4.6% |
| Mill Creek East CDP | 25,461 | $183,466 | $840,100 | 64.4% | 3.7% |
| Bainbridge Island city | 24,607 | $159,882 | $1,076,200 | 75.0% | 2.7% |
| Eastmont CDP | 23,486 | $139,346 | $696,800 | 40.9% | 6.5% |
Population Overview
Cottage Lake CDP is a small city located in Washington. The total population is 23,170. It ranks as the 59th most populous out of 631 cities and towns in Washington.
Age Demographics
The median age in Cottage Lake CDP is 44.2 years. This is 16% higher than the state median of 38.2 years.
Economy, Income & Housing
The median household income in Cottage Lake CDP is $197,331. This is 108% higher than the state median of $94,952. Compared to the national median of $78,538, household income here is 151% higher. The poverty rate stands at 3.1%. This is 69% 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 3.8%. This is 24% lower than the state rate of 5.0%. The median home value is $1,164,000. Housing costs are 124% higher than the state median of $519,800. The home-value-to-income ratio is 5.9x. 91.7% of occupied housing units are owner-occupied. This homeownership rate is 44% higher than the state average of 63.9%.
Race & Ethnicity
The largest racial or ethnic group in Cottage Lake CDP is White (non-Hispanic), making up 78.5% of the population. Asian residents account for 8.9%. The Black or African American population (0.2%) is well below the state average of 3.8%. The Hispanic or Latino population (5.7%) is well below the state average of 14.1%.
Education
67.7% of residents aged 25 and older hold a bachelor's degree or higher. This places Cottage Lake CDP in the top 10% of all cities in the state for educational attainment. This is 75% higher 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 96.6%. Notably, 26.7% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Cottage Lake 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 Cottage Lake CDP, Washington?
Cottage Lake CDP, Washington has a population of 23,170 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Cottage Lake CDP, WA?
The median household income in Cottage Lake CDP is $197,331, which is 151% higher the national median of $78,538.
What is the poverty rate in Cottage Lake CDP, WA?
The poverty rate in Cottage Lake CDP is 3.1%. This means approximately 715 residents live below the federal poverty line.
What is the racial makeup of Cottage Lake CDP, Washington?
Cottage Lake CDP's population is 78.5% White, 0.2% Black, 5.7% Hispanic/Latino, and 8.9% Asian.
What is the median home value in Cottage Lake CDP, WA?
The median home value in Cottage Lake CDP is $1,164,000. The home-value-to-income ratio is 5.9x.
How educated is Cottage Lake CDP, Washington?
67.7% of adults (25+) in Cottage Lake CDP hold a bachelor's degree or higher, and 26.7% hold a graduate or professional degree.