ZIP Code 48191

ZIP code 48191 is classified by USPS as a standard delivery area and covers roughly 42.1 square miles in Willis, Washtenaw County, Michigan. The area is home to 4,054 residents, producing a population density of 96 people per square mile, and falls within the Detroit time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 48191 against Michigan and the nation.

On the economic side, the median household income for ZIP 48191 sits at $102,833 (40% above the Michigan average), while per-capita income is $51,915. The poverty rate stands at 9.4% and the unemployment rate at 2.8%. On housing, the median home value is $271,900 (24% above the state average) with median rent at $1,387 per month, and 90.9% of occupied units are owner-occupied, a direct signal of whether 48191 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 24.4% of adults hold a bachelor's degree or higher, the median age is 47.2, and the average commute is 29 minutes. We also surface 5 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Washtenaw County, so you can benchmark 48191 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 →