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Zip Code 61442 — Keithsburg, IL

ZIP Code 61442 is associated with Keithsburg, IL, in Mercer County. The listed population estimate is 504; estimated density is 6.8 people per square mile. Among records with population estimates, it ranks #11 of 13 in Mercer County and #1115 of 1,390 in IL.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.102370, -90.923030)

Data MetricLocal Statistic
Postal / Zip Code61442
Primary CityKeithsburg
State / ProvinceIL
CountyMercer
Total Population504
Population Density6.8 people/sq mi
TimezoneAmerica/Chicago

How 61442 Compares

MetricZIP 61442Mercer County recordsIL records
Population estimate50416,648 (sum)12,694,745 (sum)
Population Density6.8 /sq mi----
County population rank#11 of 13----
State population rank#1115 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 61476Seaton4.8 mi551
ZIP 61469Oquawka9.7 mi1,818
ZIP 61260Joy9.8 mi737
ZIP 61453Little York10.3 mi677
ZIP 61272New Boston11.0 mi1,437

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 →