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.

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, Black or African American, Native American and multiracial populations.

Population by Race

White

Two or more races

Other race

Asian

Native Hawaiian or Pacific Islander

Black or African American

Native American

Race	Population	Percentage (of total)
White	311	83.83%
Two or more races	30	8.09%
Other race	16	4.31%
Asian	11	2.96%
Native Hawaiian or Pacific Islander	3	0.81%
Black or African American	0	0%
Native American	0	0%

South Prairie Marital Status

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