Marion County, Missouri ZIP Codes

6 ZIP Codes

Zip Code
City
Population ↓
63401Hannibal21,489
63461Palmyra5,446
63456Monroe City4,749
63454Maywood1,104
63471Taylor770
63463Philadelphia711

Overview of ZIP Codes in Marion County

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
6
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 6 ZCTAs in Marion County, Missouri (US Census).

Sources

  1. US Census: 2025 Gazetteer Files
  2. US Census: ZIP Code Tabulation Areas (ZCTAs)

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