Home > MO > Marion County > Hannibal > Zip 63401

Zip Code 63401 — Hannibal, MO

63401 is a ZIP Code associated with Hannibal, MO, located within Marion. The postal region supports an estimated population of 21,489 residents across Data Pending housing units, with a population density of 74.8 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (39.690460, -91.459860)

Data MetricLocal Statistic
Postal / Zip Code63401
Primary CityHannibal
State / ProvinceMO
CountyMarion
Total Population21,489
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density74.8 people/sq mi
TimezoneAmerica/Chicago

How 63401 Compares

MetricZIP 63401Marion CountyMO State Average
Population21,48934,2696,191,989
Median IncomeData PendingN/AN/A
Population Density74.8 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 63459New London8.5 mi4,423N/A
Zip 63461Palmyra9.0 mi5,446N/A
Zip 63467Saverton10.7 mi19N/A
Zip 63436Center13.9 mi1,199N/A
Zip 63456Monroe City14.4 mi4,749N/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 →