Lake Cassidy, Washington Demographics & Population 2026
During the 2020–2024 ACS period, Lake Cassidy, Washington had a total population of 3,292, the 246th largest community in Washington, with a median household income of $113,403, which is 16% higher than the state average. The poverty rate is 4.9%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- An exceptionally low poverty rate of 4.9% — among the lowest in Washington.
- Near full employment with an unemployment rate of just 1.6%.
Lake Cassidy Quick Facts
How Lake Cassidy 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 | 3,337 | 3,292 | -1.3% |
| Median household income | $115,417 | $113,403 | -1.7% |
| Median home value | $683,600 | $705,000 | +3.1% |
How Lake Cassidy 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+)
Lake Cassidy Rankings in Washington
Explore Washington Rankings
Other Cities in Snohomish County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Everett | 111,845 | $83,512 | 12.9% | $565,300 |
| Marysville | 73,002 | $103,974 | 8.1% | $567,900 |
| Edmonds | 42,735 | $122,449 | 3.8% | $890,100 |
| Lake Stevens | 40,253 | $122,336 | 5.2% | $635,600 |
| Lynnwood | 40,110 | $77,704 | 14.1% | $686,900 |
| Mill Creek East | 25,453 | $192,937 | 4.1% | $905,400 |
| Eastmont | 23,721 | $138,912 | 6.3% | $784,000 |
| North Lynnwood | 23,339 | $101,088 | 7.2% | $616,400 |
| Mountlake Terrace | 23,104 | $107,687 | 7.0% | $667,300 |
| Martha Lake | 22,634 | $124,494 | 8.3% | $785,400 |
Cities Similar to Lake Cassidy
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Central Park | 3,206 | $99,127 | $335,500 | 26.8% | 6.4% |
| Warm Beach | 3,442 | $99,940 | $671,100 | 26.8% | 7.5% |
| Key Center | 3,544 | $105,781 | $613,200 | 30.3% | 7.7% |
| Sisco Heights | 3,015 | $119,158 | $735,000 | 27.6% | 7.1% |
| Lochsloy | 3,029 | $106,484 | $610,200 | 26.8% | 7.2% |
Population Overview
Lake Cassidy is a small community located in Washington, within Snohomish County. The total population is 3,292. It ranks as the 246th most populous out of 628 Census-designated places in Washington.
Age Demographics
The median age in Lake Cassidy is 50.7 years. This is 32% higher than the state median of 38.3 years.
Economy, Income & Housing
The median household income in Lake Cassidy is $113,403. This is 16% higher than the state median of $98,141. It is also 40% higher than the national median of $80,734. The poverty rate stands at 4.9%. This is 50% 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 1.6%. This is 69% lower than the state rate of 5.1%. The median home value is $705,000. Housing costs are 25% higher than the state median of $564,600. The home-value-to-income ratio of 6.2x suggests that housing affordability is a significant concern for many residents. 79.6% of occupied housing units are owner-occupied. This homeownership rate is 25% higher than the state average of 63.8%.
Race & Ethnicity
The largest racial or ethnic group in Lake Cassidy is White (non-Hispanic), making up 83.0% of the population. Hispanic or Latino residents account for 5.8%. The Hispanic or Latino population (5.8%) is well below the state average of 14.4%. The Asian population (0.7%) is well below the state average of 9.7%.
Education
25.0% of residents aged 25 and older hold a bachelor's degree or higher. This is 37% 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 88.9%.
Data Sources & Methodology
All demographic data for Lake Cassidy, 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 Lake Cassidy, Washington?
Lake Cassidy, Washington has a population of 3,292 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Lake Cassidy, WA?
The median household income in Lake Cassidy is $113,403, which is 40% higher than the national median of $80,734.
What is the poverty rate in Lake Cassidy, WA?
The poverty rate in Lake Cassidy is 4.9%. This means approximately 162 residents live below the federal poverty line.
What is the racial makeup of Lake Cassidy, Washington?
Lake Cassidy's population is 83.0% White, 4.3% Black, 5.8% Hispanic/Latino, and 0.7% Asian.
What is the median home value in Lake Cassidy, WA?
The median home value in Lake Cassidy is $705,000. The home-value-to-income ratio is 6.2x.
How educated is Lake Cassidy, Washington?
25.0% of adults (25+) in Lake Cassidy hold a bachelor's degree or higher, and 8.8% hold a graduate or professional degree.