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 2025 population of 21,013 . Mill Creek is currently growing at a rate of 0.1% annually and its population has increased by 0.48% since the most recent census, which recorded a population of 20,912 in 2020.

The average household income in Mill Creek is $156,404 with a poverty rate of 4.89%. The median age in Mill Creek is 38.8 years: 37.9 years for males, and 39.6 years for females. For every 100 females there are 97.5 males.

21K
Total Population
4,525
Density (mi²)
20 0.1%
Growth

Mill Creek Population

Mill Creek Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Mill Creek includes 63.99% White, 20.57% Asian, 4.65% Black or African American, and smaller percentages for other race, Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

White (63.99%)

Asian (20.57%)

Two or more races (7.82%)

Black or African American (4.65%)

Other race (2.34%)

Native Hawaiian or Pacific Islander (0.4%)

Native American (0.23%)

Race
Population
Percentage (of total)
White13,34063.99%
Asian4,28920.57%
Two or more races1,6307.82%
Black or African American9694.65%
Other race4872.34%
Native Hawaiian or Pacific Islander840.4%
Native American470.23%

Mill Creek Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Mill Creek's average per capita income is $82,976. Household income levels show a median of $121,578. The poverty rate stands at 4.89%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$165,494-
Families$149,592$189,349
Households$121,578$156,404
Non Families$66,705$88,741

$82,976

Average Income

$121,578

Median Household Income

4.89%

Poverty Rate

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)