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Zip Code 61340 — Mark, IL

61340 is a ZIP Code associated with Mark, IL, located within Putnam. The postal region supports an estimated population of 545 residents across Data Pending housing units, with a population density of 241.4 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (41.263960, -89.251230)

Data MetricLocal Statistic
Postal / Zip Code61340
Primary CityMark
State / ProvinceIL
CountyPutnam
Total Population545
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density241.4 people/sq mi
TimezoneAmerica/Chicago

How 61340 Compares

MetricZIP 61340Putnam CountyIL State Average
Population5455,67312,694,745
Median IncomeData PendingN/AN/A
Population Density241.4 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 61326Granville1.8 mi1,953N/A
Zip 61363Standard3.6 mi250N/A
Zip 61327Hennepin3.9 mi1,442N/A
Zip 61322Depue4.7 mi1,530N/A
Zip 61315Bureau6.1 mi264N/A

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 →