
Snohomish County
- State:
- Washington
- County Seat:
- Everett
Snohomish County's estimated 2025 population is 853,379 with a growth rate of 0.51% in the past year according to the most recent United States census data. Snohomish County is the 3rd largest county in Washington. The 2010 population was 715,522 and has seen a growth of 19.27% since that time.