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Zip Code 61109 — Rockford, IL

61109 is a ZIP Code associated with Rockford, IL, located within Winnebago. The postal region supports an estimated population of 26,768 residents across Data Pending housing units, with a population density of 268.3 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (42.192400, -89.053920)

Data MetricLocal Statistic
Postal / Zip Code61109
Primary CityRockford
State / ProvinceIL
CountyWinnebago
Total Population26,768
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density268.3 people/sq mi
TimezoneAmerica/Chicago

How 61109 Compares

MetricZIP 61109Winnebago CountyIL State Average
Population26,768285,06312,694,745
Median IncomeData PendingN/AN/A
Population Density268.3 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 61104Rockford4.3 mi17,222N/A
Zip 61108Rockford5.1 mi30,355N/A
Zip 61112Rockford5.3 mi152N/A
Zip 61016Cherry Valley5.5 mi5,465N/A
Zip 61102Rockford5.8 mi15,937N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →