Home > IL > Marshall County > Lacon > Zip 61540

Zip Code 61540 — Lacon, IL

ZIP Code 61540 is associated with Lacon, IL, in Marshall County. The listed population estimate is 2,753; estimated density is 20.2 people per square mile. Among records with population estimates, it ranks #1 of 8 in Marshall County and #593 of 1,390 in IL.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.018560, -89.368670)

Data MetricLocal Statistic
Postal / Zip Code61540
Primary CityLacon
State / ProvinceIL
CountyMarshall
Total Population2,753
Population Density20.2 people/sq mi
TimezoneAmerica/Chicago

How 61540 Compares

MetricZIP 61540Marshall County recordsIL records
Population estimate2,7539,553 (sum)12,694,745 (sum)
Population Density20.2 /sq mi----
County population rank#1 of 8----
State population rank#593 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 61375Varna6.4 mi989
ZIP 61565Sparland7.3 mi1,262
ZIP 61570Washburn7.4 mi1,503
ZIP 61541La Rose7.5 mi97
ZIP 61537Henry8.6 mi2,743

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 →