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Zip Code 61489 — Williamsfield, IL

61489 is a ZIP Code associated with Williamsfield, IL, located within Knox. The postal region supports an estimated population of 820 residents across Data Pending housing units, with a population density of 6.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.934620, -90.026640)

Data MetricLocal Statistic
Postal / Zip Code61489
Primary CityWilliamsfield
State / ProvinceIL
CountyKnox
Total Population820
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density6.7 people/sq mi
TimezoneAmerica/Chicago

How 61489 Compares

MetricZIP 61489Knox CountyIL State Average
Population82049,26112,694,745
Median IncomeData PendingN/AN/A
Population Density6.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 61428Dahinda4.3 mi1,278N/A
Zip 61451Laura4.8 mi272N/A
Zip 61485Victoria6.8 mi417N/A
Zip 61572Yates City9.5 mi732N/A
Zip 61449La Fayette11.1 mi339N/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 →