ZIP Code 61261

ZIP code 61261 is classified by USPS as a standard delivery area and covers roughly 46.4 square miles in Lyndon, Whiteside County, Illinois. The area is home to 975 residents, producing a population density of 21 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 61261 against Illinois and the nation.

On the economic side, the median household income for ZIP 61261 sits at $64,375 (20% below the Illinois average), while per-capita income is $39,594. The poverty rate stands at 2.9% and the unemployment rate at 0.0%. On housing, the median home value is $134,100 (30% below the state average) with median rent at — per month, and 89.3% of occupied units are owner-occupied, a direct signal of whether 61261 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 22.9% of adults hold a bachelor's degree or higher, the median age is 60, and the average commute is 32 minutes. We also surface 3 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Whiteside County, so you can benchmark 61261 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 →