In 2023, South Prairie, WA had a population of 371 people with a median age of 34.2 and a median household income of $112,917. Between 2022 and 2023 the population of South Prairie, WA grew from 353 to 371, a 5.1% increase and its median household income grew from $94,167 to $112,917, a 19.9% increase.
The 5 largest ethnic groups in South Prairie, WA are White (Non-Hispanic) (73.9%), White (Hispanic) (9.97%), Other (Hispanic) (4.31%), Two Races Including Other (Non-Hispanic) (3.5%), and Asian (Non-Hispanic) (2.96%).
N/A of the households in South Prairie, WA reported speaking a non-English language at home as their primary shared language. This does not consider the potential multi-lingual nature of households, but only the primary self-reported language spoken by all members of the household.
In 2023, the median property value in South Prairie, WA was $391,700, and the homeownership rate was 94.4%.