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Zip Code 61603 — Peoria, IL

ZIP Code 61603 is associated with Peoria, IL, in Peoria County. The listed population estimate is 15,356; estimated density is 1,403.4 people per square mile. Among records with population estimates, it ranks #4 of 25 in Peoria County and #283 of 1,390 in IL.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.712200, -89.574650)

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

How 61603 Compares

MetricZIP 61603Peoria County recordsIL records
Population estimate15,356179,934 (sum)12,694,745 (sum)
Population Density1,403.4 /sq mi----
County population rank#4 of 25----
State population rank#283 of 1,390----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in IL

ZIP CodeCityDistancePopulation estimate
ZIP 61611East Peoria2.1 mi24,040
ZIP 61606Peoria2.1 mi6,684
ZIP 61625Peoria2.3 mi456
ZIP 61616Peoria Heights2.4 mi5,825
ZIP 61602Peoria2.7 mi1,163

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 →