Zip Code 61604 — Peoria, IL

ZIP Code 61604 is associated with Peoria, IL, in Peoria County. The listed population estimate is 28,313; estimated density is 719.5 people per square mile. Among records with population estimates, it ranks #1 of 25 in Peoria County and #164 of 1,390 in IL.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.705250, -89.652970)

Data MetricLocal Statistic
Postal / Zip Code61604
Primary CityPeoria
State / ProvinceIL
CountyPeoria
Total Population28,313
Population Density719.5 people/sq mi
TimezoneAmerica/Chicago

How 61604 Compares

MetricZIP 61604Peoria County recordsIL records
Population estimate28,313179,934 (sum)12,694,745 (sum)
Population Density719.5 /sq mi----
County population rank#1 of 25----
State population rank#164 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 61625Peoria2.1 mi456
ZIP 61606Peoria2.2 mi6,684
ZIP 61605Peoria2.2 mi13,424
ZIP 61602Peoria3.1 mi1,163
ZIP 61603Peoria4.1 mi15,356

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 →