United States › Washington › Mill Creek CITY
Mill Creek Washington · 20,902 residents (2025 est.) · 4.64 sq mi
Time machine
COMPARE TO 1990 Census 2000 Census 2009 ACS 2010 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2020 ACS 2021 ACS 2022 ACS 2023 ACS
The short version
Mill Creek is a city of 20,956 people in Washington. Home values have roughly tripled since 2000, reaching $903,800. Since 2000 the city has more than doubled, up 9,431 people. 56% of adults hold a bachelor's degree, against 36% nationally. Few US cities rank higher on income. There are 4,512 people per square mile.
At a glance
Wealthier
above the US median
US median: $82,259
Mid-age
median age 39.3
US median: 38.9
More educated
56% hold a bachelor's degree
US average: 36%
Less affordable
home values up 67%, inflation adjusted
US median home: $376,019
Section 01
Population & growth from 11,525 in 2000
20,902 in 2025 (Census Bureau estimate)
4,512 / sq mi
+24%since 2009
from 3,638 / sq mi in 2009
US average: 281
from 38.6 in 2000
US average: 38.9
Population, 1990 – 2024
6K 10K 14K 18K 22K 1990 2000 2010 2020 2024 Mill Creek Age distribution, 2024
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $124,364
−2%inflation adjusted, since 2000
from $69,702 in 2000
US average: $82,259
from $36,234 in 2000
US average: $44,673
Households earning $100K+
from 56.1% in 2009
US average: 53.3%
from 3.5% in 2000
US average: 12.5%
from 0.374 in 2010
US average: 0.476
Workforce by industry, 2024
Arts, entertainment, food 3.5%
Professional, scientific, technical 2.6%
Transportation & warehousing 2%
Education & health services 1.1%
Agriculture, forestry, fishing 0.5%
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$903,800
+67%inflation adjusted, since 2000
from $296,300 in 2000
US average: $376,019
$2,249
+38%inflation adjusted, since 2000
from $894 in 2000
US average: $1,442
from 67.0% in 2000
41.0% rent
from 2.1% in 2009
US average: 10.0%
2.41 people
Unchangedsince 2009
from 2.42 people in 2009
US average: 2.54
from 30.4% in 2009
US average: 22.9%
from 41.4% in 2009
US average: 47.4%
from 5.2 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity 2000
White, non-Hispanic 79.7%(9,184)
Hispanic / Latino 3.3%(375)
2024
White, non-Hispanic 61.3%(12,836)
Hispanic / Latino 8.6%(1,803)
from 50 in 2009
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins
Detailed origins & ancestry Hispanic origin
+ 2 more hispanic origin groups with data Ancestry
+ 30 more ancestry groups with data from 47.7% in 2000
US average: 35.6%
High school or higher
from 95.0% in 2000
US average: 89.6%
from 16.7% in 2000
US average: 14.0%
Section 06
Commute & transportation from 22.6 min in 2000
US average: 26.5
from 75.0% in 2009
US average: 68.9%
from 11.7% in 2009
US average: 8.5%
from 4.6% in 2009
US average: 3.2%
from 5.4% in 2009
US average: 15.0%
from 1.9% in 2009
US average: 2.4%
from 0.6% in 2009
US average: 0.4%
from 3.9% in 2009
US average: 8.3%
Section 07
Work & employment from 6.4% in 2011
US average: 5.2%
from 67.4% in 2011
US average: 63.5%
Women 20-64 in the labor force
from 80.7% in 2020
US average: 74.6%
from 7.5% in 2009
US average: 13.1%
from 50.0% in 2009
US average: 42.5%
Section 08
People & community from 16.9% in 2009
US average: 14.1%
from 12.5% in 2009
US average: 6.2%
from 6.9% in 2012
US average: 13.3%
from 10.1% in 2013
US average: 8.4%
from 89.7% in 2017
US average: 91.0%
Computer in household
from 98.1% in 2020
US average: 95.5%
from 82.2% in 2020
US average: 87.7%
from 74.4% in 2016
US average: 77.7%
from 3.4% in 2016
US average: 13.6%
Marital status
Men 15+
Never married 31.4%(2,733)
Women 15+
Never married 23.8%(2,051)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 10.1% in 2013
US average: 8.4%
from 72.7% in 2020
US average: 54.8%
Direct-purchase
from 16.5% in 2020
US average: 13.8%
from 14.1% in 2020
US average: 18.4%
from 8.8% in 2020
US average: 20.9%
VA health care
from 1.4% in 2020
US average: 2.2%
Any private
from 85.8% in 2020
US average: 67.1%
Any public
from 21.6% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 25.3%(207)
Gulf War (1990s) 36.8%(301)
Share of the 817 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
Places similar to Mill Creek Head to head
Compare Mill Creek to nearby cities MILL CREEK VS
Martha Lake
Income $124,494 same
Home value $785,400 −13%
Population 22,634 +8%
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MILL CREEK VS
Lake Stickney
Income $94,020 −24%
Home value $620,300 −31%
Population 15,890 −24%
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MILL CREEK VS
Mill Creek East
Income $192,937 +55%
Home value $905,400 same
Population 25,453 +22%
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MILL CREEK VS
Eastmont
Income $138,912 +12%
Home value $784,000 −13%
Population 23,721 +13%
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Frequently asked
How many people live in Mill Creek, Washington? Mill Creek, Washington has about 20,956 residents according to the 2024 American Community Survey.
What is the median household income in Mill Creek, Washington? The typical household in Mill Creek, Washington earns about $124,364 a year. Half of households make more than that, and half make less.
Is Mill Creek, Washington expensive? In Mill Creek, Washington, the median home is worth about $903,800, and the typical rent is about $2,249 a month.
How educated are people in Mill Creek, Washington? About 56.0% of adults age 25 and over in Mill Creek, Washington hold a bachelor's degree or higher.
What is the poverty rate in Mill Creek, Washington? About 6.4% of people in Mill Creek, Washington live below the federal poverty line.
Has Mill Creek, Washington grown since 1990? Yes, Mill Creek, Washington has grown since 1990. The population has added about 13,784 residents, a change of about 192 percent over that period.
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