ZIP Code 57433

ZIP code 57433 is classified by USPS as a standard delivery area and covers roughly 319.2 square miles in Columbia, Brown County, South Dakota. The area is home to 383 residents, producing a population density of 1 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 57433 against South Dakota and the nation.

On the economic side, the median household income for ZIP 57433 sits at $50,417 (34% below the South Dakota average), while per-capita income is $34,722. The poverty rate stands at 2.2% and the unemployment rate at 22.6%. On housing, the median home value is — with median rent at — per month, and 98.9% of occupied units are owner-occupied — a direct signal of whether 57433 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 21.7% of adults hold a bachelor's degree or higher, the median age is 46.9, and the average commute is —. We also surface 1 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Brown County, so you can benchmark 57433 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. Verify with HUD →