Sammamish, Washington Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Sammamish, WA Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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A+
Health Top grade
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A+
Income Top grade
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A+
Education Top grade
Source: Map AI Methodology
Population
| Metric | Sammamish | Washington Avg | U.S. Average |
|---|---|---|---|
| Population | 59,678 | 7,801,159 | 337,468,954 |
| Population density (per sq mi) | 2483.0 | 109.3 | 86.4 |
| Population growth (%/yr) | 1.17% | 1.21% | 0.59% |
| Median age | 40.2 | 36.2 | 37.3 |
| Households | 20,362 | 3,058,619 | 130,235,071 |
Population in Sammamish grew by 26.7% from 2009 to 2024, reaching 59,678 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Sammamish is Gen X, aged 45–60, at 25.7% of residents. That is 6.2 points above Washington as a whole.
- Gen Z 13–28 10,153 17.0% -4.4 pts
- Millennials 29–44 14,899 25.0% +1.6 pts
- Gen X 45–60 15,360 25.7% +6.2 pts
- Boomers 61–79 6,424 10.8% -5.5 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Washington, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 51.4% of the people living in Sammamish and men 48.6%.
- Women 51.4% Washington 49.7%
- Men 48.6% Washington 50.3%
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Economy
Sammamish has a the economy index of A+, which means it is exceptionally prosperous.
| Metric | Sammamish | Washington Avg | U.S. Average |
|---|---|---|---|
| Median household income | $206,707 | $98,224 | $80,455 |
| Income growth (%/yr) | 4.63% | 5.64% | 4.80% |
| Unemployment rate | 3.2% | 5.0% | 5.2% |
The median household income in Sammamish is about 110% higher than in Washington.
Housing
| Metric | Sammamish | Washington Avg | U.S. Average |
|---|---|---|---|
| Median home price | $884,864 | $485,016 | $248,835 |
| Median rent | $2,816 | $1,759 | $1,407 |
| Homeownership rate | 81.9% | 63.8% | 65.2% |
The median home price in Sammamish is about 26.2 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $2,816 per month for that long.
Commute Time & Mobility
Commuters in Sammamish spend about 56 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 233 hours, about 9.7 full days, spent commuting.
| Metric | Sammamish | Washington Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 27.9 | 22.4 | 22.4 |
| Round-trip commute (min) | 55.8 | 44.8 | 44.8 |
| Yearly time spent (hours) | 233 | 187 | 187 |
| Estimated yearly cost | $7,213 | $5,785 | $5,790 |
| Work from home | 39.9% | 19.8% | 15.0% |
| Highway traffic (vehicles/day) | 30,275 | 10,119 | 8,813 |
| Local road traffic (vehicles/day) | 3,989 | 1,525 | 1,355 |
The average commute time in Sammamish is 28 minutes, longer than the 22 minutes in Washington.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Sammamish has a education index of A+, which means it is exceptionally educated.
| Metric | Sammamish | Washington Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 70.5% | 35.1% | 31.6% |
| Average household size | 2.91 | 2.50 | 2.53 |
Health
Sammamish has a health index of A+, which means it is exceptionally healthy.
| Metric | Sammamish | Washington Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 84.1 | 79.6 | 78.3 |
| Self-rated poor health | 6.4% | 15.4% | 16.3% |
| Smokers | 7.3% | 16.4% | 19.0% |
Sammamish, WA Compared With Nearby Cities
Sammamish, WA is the 3rd largest of the 5 cities compared here, 59,678 residents against a local median of 48,489. The measure that sets Sammamish, WA apart most is median household income: $206,707, 27% above the local median of $163,067. That is the better end of the local range on this measure.
Commute tells the same story from another angle: 27.9 min against a local median of 22.3 min, 25% above it. The picture is mixed rather than uniform: median household income runs ahead of the neighbourhood while commute runs behind it, so Sammamish, WA is trading one against the other rather than simply out-performing what surrounds it. The cities themselves spread $27,798 on median household income, so Sammamish, WA sits at one end of an already wide local range rather than apart from it. Sammamish, WA has the highest median household income of the 5 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Sammamish, WA | 59,678 | $206,707 #1/5 | $884,864 #3/5 | 27.9 min #5/5 |
| Issaquah, WA | 24,985 | $156,380 | $888,937 | 23.6 min |
| Union Hill-Novelty Hill, WA | 23,529 | $184,178 | $826,184 | 25.9 min |
| Redmond, WA | 71,994 | $160,130 | $656,083 | 18.6 min |
| Bellevue, WA | 149,047 | $166,003 | $1,665,806 | 21.0 min |
Frequently Asked Questions
Common questions about Sammamish, Washington.
What is the population of Sammamish, Washington?
About 59,678 people live in Sammamish, Washington, in 20,362 households of 2.9 people on average. The median age is 40.2, so residents are older than the U.S. median of 37.3 by about 3 years.
Is Sammamish, Washington urban or rural?
Averaged over its land area, Sammamish, Washington has 2,483 people per square mile, a density typical of urban and suburban areas. That is about 29 times the U.S. average of 86.
Is Sammamish, Washington an affordable place to live?
The median home costs 4.3 times the median household income ($884,864 against $206,707), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $2,816 a month takes about 16% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is unemployment high in Sammamish, Washington?
Unemployment in Sammamish, Washington is only 3.2%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
How common is a college degree in Sammamish, Washington?
70.5% of adults in Sammamish, Washington hold a bachelor's degree or higher (about 7 in 10), well above the U.S. share of 31.6%.
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