Des Moines Flag

Des Moines

County:
King County
County Seat:
No
Area (mi²):
6.414
State:
Washington

Des Moines is a city located in King County, Washington. Des Moines has a 2026 population of 33,366. Des Moines is currently growing at a rate of 0.24% annually and its population has increased by 1.45% since the most recent census, which recorded a population of 32,889 in 2020.

The median household income in Des Moines is $92,483 with a poverty rate of 12.12%. The median age in Des Moines is 38 years: 38.7 years for males, and 37.1 years for females. For every 100 females there are 92.8 males.

33.4K
Total Population
5,202
Density (mi²)
80 0.24%
Growth

Des Moines Population

Des Moines Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202633,366800.24%
202533,286790.24%
202433,2073871.18%
202332,8203471.07%
202232,473-203-0.62%
202132,676-239-0.73%
202032,8895481.69%
201932,341460.14%
201832,2958002.54%
201731,495800.25%
201631,415710.23%
201531,3442550.82%
201431,0893561.16%
201330,7332150.7%
201230,5183911.3%
201130,1273521.18%
201029,7751020.34%
200029,26711,98469.34%
199017,2839,905134.25%
19807,3783,50790.6%
19703,8711,87193.55%
19602,0001,000100%
19401,00000%

Median Age

Overall: 38 years
Female: 37.1 years
Male: 38.7 years

Des Moines Adults

There are 25,521 adults, (5,709 of whom are seniors) in Des Moines.

Sex Ratio

Female: 17,021 (51.9%)
Male: 15,802 (48.1%)

Demographics

The racial composition of Des Moines includes 46.62% White, 12.84% Black or African American, 12.02% Asian, 11.63% other race, and smaller percentages for Native Hawaiian or Pacific Islander, Native American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White15,30146.62%
Two or more races4,78714.58%
Black or African American4,21412.84%
Asian3,94512.02%
Other race3,81811.63%
Native Hawaiian or Pacific Islander6411.95%
Native American1170.36%
Race
Population ↓
Percentage (of total)
Other race3,74311.4%
Two or more races1,7615.37%
White8552.6%
Native American630.19%
Black or African American500.15%
Native Hawaiian or Pacific Islander210.06%
Asian110.03%
Race
Population ↓
Percentage (of total)
White14,44644.01%
Black or African American4,16412.69%
Asian3,93411.99%
Two or more races3,0269.22%
Native Hawaiian or Pacific Islander6201.89%
Other race750.23%
Native American540.16%

Des Moines Marital Status

Economics and Income Statistics

Des Moines ' average per capita income is $56,511. Household income levels show a median of $92,483. The poverty rate stands at 12.12%.

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$137,955-
Families$122,694$134,717
Households$92,483$114,664
Non Families$57,833$79,523

$56,511

Average Income

$92,483

Median Household Income

12.12%

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)