ZIP Code 57313

ZIP code 57313 is classified by USPS as a standard delivery area and covers roughly 451.2 square miles in Armour, Douglas County, South Dakota. The area is home to 1,128 residents, producing a population density of 3 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 57313 against South Dakota and the nation.

On the economic side, the median household income for ZIP 57313 sits at $89,107 (16% above the South Dakota average), while per-capita income is $50,844. The poverty rate stands at 17.4% and the unemployment rate at 1.9%. On housing, the median home value is $117,300 (39% below the state average) with median rent at $794 per month, and 79.1% of occupied units are owner-occupied — a direct signal of whether 57313 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 29.7% of adults hold a bachelor's degree or higher, the median age is 39.5, and the average commute is 23 minutes. We also surface 1 nearby ZIP codes within roughly 10 miles and 4 additional ZIPs sharing Douglas County, so you can benchmark 57313 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 →