How many people live in Snohomish County, WA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 864,100 people living in Snohomish County, WA. That makes Snohomish County the third-most populous county in Washington. It is home to 10.8% of people living in the state.
864K
population of Snohomish County, WA (2024)
10.8%
County share of the Washington population (2024)
About 864,100 people lived in Snohomish County, WA in 2024.
Population estimates, 2000–2024
What are Snohomish County, WA’s age demographics?
About 134,000 Snohomish County residents are aged 65 and older in 2024. That represents 15.5% of its population. For comparison, the age group represents 17.4% of Washington’s population and 18% in the US overall.
Another 186,400 Snohomish County residents, or 21.6% of the population, were children under 18. For comparison, the age group represents 20.9% of Washington’s population and 21.6% in the US overall.
A higher share of Snohomish County, WA's population is aged 25–44 than the US as a whole.
Population estimates by age group, (2024)
What are Snohomish County, WA’s racial and ethnic demographics?
Non-Hispanic white residents make up 61% of the Snohomish County, WA population, higher than the national share of 57.5%. Snohomish County, WA also has a larger share of people identifying as non-Hispanic Asian (16%) than the US overall (6.5%).
In contrast, Snohomish County’s non-Hispanic Black or African American population accounts for 4.2%, below the 12.6% nationwide, and the Hispanic population makes up 12.7% of the county, compared with 20% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Snohomish County, WA has a higher share of a non-Hispanic Asian population than Washington as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Snohomish County, WA is Everett with about 113,000 residents in 2024.
Cities and towns in Snohomish County, WA ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Everett | 113,011 |
| 2. | Marysville | 76,209 |
| 3. | Edmonds | 42,871 |
| 4. | Lynnwood | 41,597 |
| 5. | Lake Stevens | 41,350 |
| 6. | Mountlake Terrace | 25,198 |
| 7. | Arlington | 21,959 |
| 8. | Mukilteo | 21,299 |
| 9. | Mill Creek | 20,993 |
| 10. | Bothell (pt.) | 20,263 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
