Home > IL > Peoria County > Chillicothe > Zip 61523

Zip Code 61523 — Chillicothe, IL

ZIP Code 61523 is associated with Chillicothe, IL, in Peoria County. The listed population estimate is 10,203; estimated density is 74.0 people per square mile. Among records with population estimates, it ranks #8 of 25 in Peoria County and #369 of 1,390 in IL.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.917510, -89.535620)

Data MetricLocal Statistic
Postal / Zip Code61523
Primary CityChillicothe
State / ProvinceIL
CountyPeoria
Total Population10,203
Population Density74.0 people/sq mi
TimezoneAmerica/Chicago

How 61523 Compares

MetricZIP 61523Peoria County recordsIL records
Population estimate10,203179,934 (sum)12,694,745 (sum)
Population Density74.0 /sq mi----
County population rank#8 of 25----
State population rank#369 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 61562Rome3.1 mi38
ZIP 61526Edelstein4.8 mi1,105
ZIP 61552Mossville6.8 mi51
ZIP 61479Speer8.0 mi95
ZIP 61565Sparland8.0 mi1,262

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 →