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Zip Code 61537 — Henry, IL

ZIP Code 61537 is associated with Henry, IL, in Marshall County. The listed population estimate is 2,743; estimated density is 18.5 people per square mile. Among records with population estimates, it ranks #2 of 8 in Marshall County and #594 of 1,390 in IL.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.116070, -89.470350)

Data MetricLocal Statistic
Postal / Zip Code61537
Primary CityHenry
State / ProvinceIL
CountyMarshall
Total Population2,743
Population Density18.5 people/sq mi
TimezoneAmerica/Chicago

How 61537 Compares

MetricZIP 61537Marshall County recordsIL records
Population estimate2,7439,553 (sum)12,694,745 (sum)
Population Density18.5 /sq mi----
County population rank#2 of 8----
State population rank#594 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 61560Putnam6.0 mi477
ZIP 61565Sparland6.1 mi1,262
ZIP 61540Lacon8.6 mi2,753
ZIP 61424Camp Grove9.0 mi20
ZIP 61368Tiskilwa10.3 mi1,273

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 →