Sammamish, Washington Demographics & Population 2026
During the 2020–2024 ACS period, Sammamish, Washington had a total population of 66,463, the 20th largest city in Washington, with a median household income of $239,690, which is 144% higher than the state average. The poverty rate is 4.3%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Household income is 144% above the state average — one of the wealthiest communities in Washington.
- An exceptionally low poverty rate of 4.3% — among the lowest in Washington.
- 77.1% of adults hold a bachelor's degree or higher — top 10% in Washington.
Sammamish Quick Facts
How Sammamish 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 | 66,375 | 66,463 | +0.1% |
| Median household income | $227,273 | $239,690 | +5.5% |
| Median home value | $1,240,300 | $1,407,300 | +13.5% |
How Sammamish 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 diverse community with significant representation from multiple racial and ethnic groups.
State average: 56 | National average: 61
Education
Educational Attainment (Adults 25+)
Sammamish Rankings in Washington
Explore Washington Rankings
Other Cities in King County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Seattle | 754,195 | $123,860 | 9.9% | $938,600 |
| Bellevue | 151,847 | $165,576 | 7.2% | $1,340,300 |
| Kent | 135,603 | $92,302 | 10.8% | $587,800 |
| Renton | 105,317 | $100,432 | 8.1% | $672,600 |
| Federal Way | 99,493 | $86,909 | 13.0% | $552,800 |
| Kirkland | 92,621 | $150,414 | 6.1% | $1,115,400 |
| Auburn | 85,676 | $97,884 | 8.9% | $547,900 |
| Redmond | 77,353 | $162,560 | 5.6% | $1,167,800 |
| Shoreline | 61,431 | $112,751 | 8.8% | $811,100 |
| Burien | 51,513 | $91,318 | 12.9% | $638,800 |
Cities Similar to Sammamish
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Redmond | 77,353 | $162,560 | $1,167,800 | 75.3% | 5.6% |
| South Hill | 68,025 | $113,130 | $543,600 | 32.9% | 7.2% |
| Shoreline | 61,431 | $112,751 | $811,100 | 52.8% | 8.8% |
| Marysville | 73,002 | $103,974 | $567,900 | 24.3% | 8.1% |
| Richland | 62,753 | $95,813 | $436,700 | 46.6% | 9.0% |
Population Overview
Sammamish is a mid-sized community located in Washington, within King County. The total population is 66,463. It ranks as the 20th most populous out of 628 Census-designated places in Washington.
Age Demographics
The median age in Sammamish is 39.9 years. This is 4% higher than the state median of 38.3 years. With 28.6% of the population under 18, Sammamish has a notably young demographic profile, suggesting a family-oriented community.
Economy, Income & Housing
The median household income in Sammamish is $239,690. This is 144% higher than the state median of $98,141. It is also 197% higher than the national median of $80,734. The poverty rate stands at 4.3%. This is 57% 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 3.1%. This is 39% lower than the state rate of 5.1%. The median home value is $1,407,300. Housing costs are 149% higher than the state median of $564,600. The home-value-to-income ratio is 5.9x. 82.5% of occupied housing units are owner-occupied. This homeownership rate is 29% higher than the state average of 63.8%.
Race & Ethnicity
The largest racial or ethnic group in Sammamish is White (non-Hispanic), making up 49.2% of the population. Asian residents account for 37.1%. The Black or African American population (1.3%) is well below the state average of 3.9%. The Hispanic or Latino population (5.6%) is well below the state average of 14.4%. The Asian population is significantly higher than the state average (37.1% vs 9.7%).
Education
77.1% of residents aged 25 and older hold a bachelor's degree or higher. This places Sammamish in the top 10% of all cities in the state for educational attainment. This is 95% higher 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 97.5%. Notably, 37.3% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Sammamish, 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.
Free data download: Get all Washington city and county demographics as CSV. Download Cities CSV | Download Counties CSV
Frequently Asked Questions
What is the population of Sammamish, Washington?
Sammamish, Washington has a population of 66,463 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Sammamish, WA?
The median household income in Sammamish is $239,690, which is 197% higher than the national median of $80,734.
What is the poverty rate in Sammamish, WA?
The poverty rate in Sammamish is 4.3%. This means approximately 2,837 residents live below the federal poverty line.
What is the racial makeup of Sammamish, Washington?
Sammamish's population is 49.2% White, 1.3% Black, 5.6% Hispanic/Latino, and 37.1% Asian.
What is the median home value in Sammamish, WA?
The median home value in Sammamish is $1,407,300. The home-value-to-income ratio is 5.9x.
How educated is Sammamish, Washington?
77.1% of adults (25+) in Sammamish hold a bachelor's degree or higher, and 37.3% hold a graduate or professional degree.