Sammamish city, Washington Demographics & Population 2026

Population Overview

Sammamish city is a mid-sized community located in Washington. The total population is 66,375. It ranks as the 20th most populous out of 631 cities and towns in Washington.

Age Demographics

The median age in Sammamish city is 39.4 years. This is 3% higher than the state median of 38.2 years. With 29.3% of the population under 18, Sammamish city has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in Sammamish city is $227,273. This is 139% higher than the state median of $94,952. Compared to the national median of $78,538, household income here is 189% higher. The poverty rate stands at 4.4%. This is 56% 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 2.7%. This is 46% lower than the state rate of 5.0%. The median home value is $1,240,300. Housing costs are 139% higher than the state median of $519,800. The home-value-to-income ratio is 5.5x. 83.4% of occupied housing units are owner-occupied. This homeownership rate is 31% higher than the state average of 63.9%.

Race & Ethnicity

The largest racial or ethnic group in Sammamish city is White (non-Hispanic), making up 50.9% of the population. Asian residents account for 36.6%. The Black or African American population (1.5%) is well below the state average of 3.8%. The Hispanic or Latino population (4.4%) is well below the state average of 14.1%. The Asian population is significantly higher than the state average (36.6% vs 9.3%).

Education

77.0% of residents aged 25 and older hold a bachelor's degree or higher. This places Sammamish city in the top 10% of all cities in the state for educational attainment. This is 99% 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 97.2%. Notably, 36.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Sammamish city, 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.