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Zip Code 61728 — Colfax, IL

ZIP Code 61728 is associated with Colfax, IL, in McLean County. The listed population estimate is 1,359; estimated density is 7.6 people per square mile. Among records with population estimates, it ranks #13 of 24 in McLean County and #797 of 1,390 in IL.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (40.575460, -88.625390)

Data MetricLocal Statistic
Postal / Zip Code61728
Primary CityColfax
State / ProvinceIL
CountyMcLean
Total Population1,359
Population Density7.6 people/sq mi
TimezoneAmerica/Chicago

How 61728 Compares

MetricZIP 61728McLean County recordsIL records
Population estimate1,359171,878 (sum)12,694,745 (sum)
Population Density7.6 /sq mi----
County population rank#13 of 24----
State population rank#797 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 61730Cooksville6.4 mi361
ZIP 61720Anchor6.5 mi374
ZIP 61731Cropsey7.9 mi76
ZIP 61753Lexington9.5 mi2,833
ZIP 61737Ellsworth10.0 mi416

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 →