ZIP Code 57339

ZIP code 57339 is classified by USPS as a standard delivery area and covers roughly 331.5 square miles in Fort Thompson, Buffalo County, South Dakota. The area is home to 1,525 residents, producing a population density of 5 people per square mile, and falls within the Chicago time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 57339 against South Dakota and the nation.

On the economic side, the median household income for ZIP 57339 sits at $46,136 (40% below the South Dakota average), while per-capita income is $14,849. The poverty rate stands at 36.3% and the unemployment rate at 10.0%. On housing, the median home value is $121,700 (37% below the state average) with median rent at $605 per month, and 43.5% of occupied units are owner-occupied — a direct signal of whether 57339 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 7.2% of adults hold a bachelor's degree or higher, the median age is 21.3, and the average commute is —. We also surface 1 nearby ZIP codes within roughly 10 miles and 1 additional ZIPs sharing Buffalo County, so you can benchmark 57339 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data — no estimates, no proprietary scoring.