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Zip Code 61603 — Peoria, IL

61603 is a ZIP Code associated with Peoria, IL, located within Peoria. The postal region supports an estimated population of 15,356 residents across Data Pending housing units, with a population density of 1,403.4 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (40.712200, -89.574650)

Data MetricLocal Statistic
Postal / Zip Code61603
Primary CityPeoria
State / ProvinceIL
CountyPeoria
Total Population15,356
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1,403.4 people/sq mi
TimezoneAmerica/Chicago

How 61603 Compares

MetricZIP 61603Peoria CountyIL State Average
Population15,356179,93412,694,745
Median IncomeData PendingN/AN/A
Population Density1,403.4 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 61611East Peoria2.1 mi24,040N/A
Zip 61606Peoria2.1 mi6,684N/A
Zip 61625Peoria2.3 mi456N/A
Zip 61616Peoria Heights2.4 mi5,825N/A
Zip 61602Peoria2.7 mi1,163N/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 →