Home > IL > Winnebago County > Rockford > Zip 61101

Zip Code 61101 — Rockford, IL

61101 is a ZIP Code associated with Rockford, IL, located within Winnebago. The postal region supports an estimated population of 19,318 residents across Data Pending housing units, with a population density of 179.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (42.337270, -89.147250)

Data MetricLocal Statistic
Postal / Zip Code61101
Primary CityRockford
State / ProvinceIL
CountyWinnebago
Total Population19,318
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density179.6 people/sq mi
TimezoneAmerica/Chicago

How 61101 Compares

MetricZIP 61101Winnebago CountyIL State Average
Population19,318285,06312,694,745
Median IncomeData PendingN/AN/A
Population Density179.6 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 61103Rockford3.3 mi22,869N/A
Zip 61115Machesney Park6.3 mi22,364N/A
Zip 61104Rockford6.9 mi17,222N/A
Zip 61088Winnebago7.2 mi6,167N/A
Zip 61111Loves Park7.3 mi23,286N/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 →