South Prairie, WA population, income and ZIP codes

South Prairie town is a very small community in Washington, with 371 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #502 of 639 ranked by population — larger than 21% of them. The median age here is 34.2 years against 39.1 nationally, a slightly younger profile than the country as a whole. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in South Prairie town earn a median of $112,917 a year, 43.8% above the national figure of $78,538 and 25% above the $90,592 median for the 393 Washington cities we cover. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 2.7% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in South Prairie town is valued at $391,700, 29.1% above the national figure and 16% below the $468,400 peer median, while median gross rent runs not published a month. The home-price-to-income ratio works out to 3.5×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 94.4% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

With 371 residents, a handful of survey responses moves every median on this page. Compare South Prairie town against its county rather than against national figures.

The Census withheld gross rent for South Prairie town because the sample was too thin to publish at this geography. Those values were suppressed at the source, not lost in our dataset, and we do not model a replacement. Everything else on this page comes straight from the ACS 2019-2023 ACS 5-year tables.