South Prairie Flag

South Prairie

County:
Pierce County
County Seat:
No
Area (mi²):
0.383
State:
Washington

South Prairie is a town located in Pierce County, Washington. South Prairie has a 2025 population of 354. South Prairie is currently declining at a rate of -1.12% annually and its population has decreased by -5.85% since the most recent census, which recorded a population of 376 in 2020.

The average household income in South Prairie is $122,830 with a poverty rate of 2.7%.The median age in South Prairie is 34.2 years: 33.7 years for males, and 34.5 years for females.

354
Total Population
924
Density (mi²)
-4 -1.12%
Growth

South Prairie Population

South Prairie Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of South Prairie includes 83.83% White, 4.31% other race, and smaller percentages for Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White31183.83%
Two or more races308.09%
Other race164.31%
Asian112.96%
Native Hawaiian or Pacific Islander30.81%

South Prairie Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

South Prairie's average per capita income is $67,813. Household income levels show a median of $112,917. The poverty rate stands at 2.7%.

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$134,000-
Families$122,500$113,373
Households$112,917$122,830
Non Families$78,750$136,257

$67,813

Average Income

$112,917

Median Household Income

2.7%

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)