Mill Creek, Washington Population 2020

22,446

Mill Creek is a city located in Washington. With a 2020 population of 22,446, it is the 49th largest city in Washington and the 1681st largest city in the United States. Mill Creek is currently growing at a rate of 3.36% annually and its population has increased by 23.03% since the most recent census, which recorded a population of 18,244 in 2010. Spanning over 5 miles, Mill Creek has a population density of 4,834 people per square mile.

The average household income in Mill Creek is $121,837 with a poverty rate of 6.30%. The median rental costs in recent years comes to $1,712 per month, and the median house value is $486,600. The median age in Mill Creek is 39.1 years, 36.7 years for males, and 40.5 years for females. For every 100 females there are 90.5 males.

Mill Creek Demographics

According to the most recent ACS, the racial composition of Mill Creek was:

  • White: 71.58%
  • Asian: 17.74%
  • Two or more races: 5.74%
  • Other race: 2.30%
  • Black or African American: 2.03%
  • Native American: 0.35%
  • Native Hawaiian or Pacific Islander: 0.27%
The current population of Mill Creek, Washington is 22,446, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 20,986.The last official US Census in 2010 recorded the population at 18,244.

Mill Creek, Washington Population 2020

Population by Race

Race Population Percentage
White14,43371.58%
Asian3,57817.74%
Two or More Races1,1575.74%
Some Other Race4632.30%
Black or African American4092.03%
American Indian and Alaska Native700.35%
Native Hawaiian and Other Pacific Islander540.27%

Mill Creek Population Pyramid 2020

Mill Creek Median Age

39.1


Total

36.7


Male

40.5


Female

Mill Creek Adults

There are 15,939 adults, (3,096 of whom are seniors) in Mill Creek.

Mill Creek Age Dependency

57

Age Dependency Ratio

24.1

Old Age Dependency Ratio

32.9

Child Dependency Ratio

Mill Creek Sex Ratio

Female

10,582

52.48%

Male

9,582

47.52%

Mill Creek Households and Families

Mill Creek Renter vs Owner Occupied by Household Type

Mill Creek Household Types

Type Owner Renter
Married75%25%
All60.2%39.8%
Non Family43.8%56.2%
Female43.3%56.7%
Male25.8%74.2%

60.2%

Rate of Home Ownership

Type Count Average Size Owned
All8,1682.4660.2
Married4,5813.0175
Non Family2,5311.2543.8
Female587343.3
Male4692.925.8

2.93

Average Family Size

2.46

Average Household Size

6.2%

Unmarried (Opposite Sex)

0.2%

Unmarried (Same Sex)

Mill Creek Education

Education Attained Count Percentage
Less Than 9th Grade1711.21%
9th to 12th Grade1551.10%
High School Graduate2,16215.30%
Some College2,96020.94%
Associates Degree1,41910.04%
Bachelors Degree4,92734.86%
Graduate Degree2,33916.55%

Mill Creek Educational Attainment by Race

Name Total High School Bachelors
White10,41210,2015,097
Asian2,3332,2271,641
Hispanic565556155
Multiple Races364364134
Black304304122
Other Race22622665
Islander545454
Native American47479

The highest rate of high school graduation is among black people with a rate of 100.00%.

The highest rate of bachelors degrees is among islander people with a rate of 100.00%.

Name Average Male Female
Overall$61,281$95,309$37,123
Less Than High School$60,385$$
High School Grad$38,434$61,017$26,078
Some College$47,671$78,882$33,750
Bachelors Degree$79,684$103,769$46,012
Graduate Degree$83,281$122,614$67,250

$61,281

Average Earnings

$95,309

Average Male

$37,123

Average Female

Mill Creek Language

Mill Creek Language by Age

Mill Creek Language

78.72% of Mill Creek residents speak only English, while 21.28% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 11.96% of the population.

Mill Creek Poverty

Mill Creek Poverty by Race

Name Total In Poverty Poverty Rate
White13,7839086.59%
Multiple1,13024321.50%
Hispanic1,065706.57%
Other4635311.45%
Black4044410.89%

6.30%

Overall Poverty Rate

5.47%

Male Poverty Rate

7.04%

Female Poverty Rate

Poverty in Mill Creek

The race most likely to be in poverty in Mill Creek is Multiple, with 21.50% below the poverty level.

The race least likely to be in poverty in Mill Creek is Hispanic, with 6.57% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0.76%. Among those working part-time, it was 7.00%, and for those that did not work, the poverty rate was 10.54%.

Name Poverty
Less Than High School13.19%
High School7.22%
Some College6.69%
Bachelors or Greater1.33%
Name Poverty
Male Unemployed5.81%
Female Employed2.76%
Male Employed2.41%
Female Unemployed0.00%

Mill Creek Income

Mill Creek Income by Household Type

Name Median Mean
Households$101,239$121,837
Families$125,461$140,092
Married Families$136,458-
Non Families$67,576$77,238

Mill Creek Marital Status

Mill Creek Marital Status

Marriage Rates

57.9%

Overall Marriage Rate

61.6%

Male Marriage Rate

54.4%

Female Marriage Rate

Mill Creek Married by Age and Sex

Mill Creek Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 55-64.

Mill Creek Marital Status by Race

Mill Creek Veterans

1,208

Number of Veterans

1,134

Male Veterans

74

Female Veterans

War Veterans
Vietnam513
Second Gulf War290
First Gulf War138
Korea133
World War II31
Name Veterans % of Total
White1,0718.95%
Asian481.76%
Black4813.64%
Hispanic396.24%
2 or More284.90%
Indian1327.66%

$Mill Creek Veterans by Education

2.15%

Veteran Poverty Rate

23.43%

Veteran Disability Rate

Mill Creek Employment Status

68.8%

Labor Force Participation

66.5%

Employment Rate

3.2%

Unemployment Rate

Mill Creek Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

43.37%

Born in Washington

81.62%

Native Born

18.38%

Foreign Born

8.59%

Non Citizen

Place of Birth

81.62% of Mill Creek residents were born in the United States, with 43.37% having been born in Washington. 8.59% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Year Population Growth Annual Growth Rate
202022,4467303.36%
201921,7167303.48%
201820,9861280.61%
201720,8587303.63%
201620,1282931.48%
201519,8358034.22%
201419,0323812.04%
201318,651870.47%
201218,5642071.13%
201118,3571260.69%
201018,2316,7064.69%
200011,5254,3534.86%
19907,1720.00%