Mill Creek Flag

Mill Creek

County Seat:
No
Area (mi²):
4.644
State:
Washington

Mill Creek is a city located in Snohomish County, Washington. Mill Creek has a 2026 population of 20,993. Mill Creek is currently growing at a rate of 0.29% annually and its population has increased by 0.39% since the most recent census, which recorded a population of 20,912 in 2020.

21K
Total Population
4,521
Density (mi²)
60 0.29%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)