South Prairie town, Washington Demographics & Population 2026

Population Overview

South Prairie town is a small community located in Washington. The total population is 371. It ranks as the 502nd most populous out of 631 cities and towns in Washington.

Age Demographics

The median age in South Prairie town is 34.2 years. This is 10% lower than the state median of 38.2 years. With 31.0% of the population under 18, South Prairie town has a notably young demographic profile, suggesting a family-oriented community.

Economy, Income & Housing

The median household income in South Prairie town is $112,917. This is 19% higher than the state median of $94,952. Compared to the national median of $78,538, household income here is 44% higher. The poverty rate stands at 2.7%. This is 73% lower than the state poverty rate of 9.9%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 5.4%. This is 8% higher than the state rate of 5.0%. The median home value is $391,700. Housing costs are 25% lower than the state median of $519,800. The home-value-to-income ratio is 3.5x. 94.4% of occupied housing units are owner-occupied. This homeownership rate is 48% higher than the state average of 63.9%.

Race & Ethnicity

The largest racial or ethnic group in South Prairie town is White (non-Hispanic), making up 73.9% of the population. Hispanic or Latino residents account for 16.7%. The Asian population (3.0%) is well below the state average of 9.3%.

Education

14.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 61% lower than the state rate of 38.8%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 90.0%.

Data Sources & Methodology

All demographic data for South Prairie town, Washington is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Washington state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 631 Census-designated places in Washington. For official data, visit data.census.gov.