Snohomish County, Washington Demographics 2026

Population Overview

Snohomish County is located in Washington with a total population of 834,648. It is the 3rd most populous county out of 39 in Washington.

Age Demographics

The median age in Snohomish County is 38.4 years. This is about average than the state median of 38.2 years.

Economy, Income & Housing

The median household income in Snohomish County is $107,982. This is 14% higher than the state median of $94,952. Compared to the national median of $78,538, household income here is 37% higher. The poverty rate stands at 7.9%. This is 20% lower than the state poverty rate of 9.9%. The unemployment rate is 4.3%. This is 13% lower than the state rate of 5.0%. The median home value is $644,600. Housing costs are 24% higher than the state median of $519,800. The home-value-to-income ratio is 6.0x. 68.4% of occupied housing units are owner-occupied. This homeownership rate is 7% higher than the state average of 63.9%.

Race & Ethnicity

The largest racial or ethnic group in Snohomish County is White (non-Hispanic), making up 63.6% of the population. Asian residents account for 12.8%.

Education

36.8% of residents aged 25 and older hold a bachelor's degree or higher. This is 5% lower 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 93.1%.