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 and multiracial populations.

Population by Race

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%

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