ZIP Code 51433

ZIP code 51433 is classified by USPS as a standard delivery area and covers roughly 147.0 square miles in Auburn, Sac County, Iowa. The area is home to 676 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 51433 against Iowa and the nation.

On the economic side, the median household income for ZIP 51433 sits at $68,125 (11% below the Iowa average), while per-capita income is $32,473. The poverty rate stands at 20.8% and the unemployment rate at 0.6%. On housing, the median home value is $153,200 (13% below the state average) with median rent at $774 per month, and 48.5% of occupied units are owner-occupied, a direct signal of whether 51433 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 11.8% of adults hold a bachelor's degree or higher, the median age is 38.2, and the average commute is —. We also surface 3 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Sac County, so you can benchmark 51433 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 →