There are 6 zip codes in Marion County, Missouri. The most populated is 63401, located in Hannibal. * 2024 populations estimated based on the latest ACS 5-year data.

CSV JSON
Zip Code
Population
City
6340121,167Hannibal
634615,452Palmyra
634564,995Monroe City
634541,166Maywood
63463825Philadelphia
63471805Taylor

Zip Codes in Marion County, Missouri by Population (2024)