St. Mary Parish, Louisiana ZIP Codes

Zip Code
City
Population ↓
70538Franklin12,464
70392Patterson8,173
70342Berwick4,607
70514Baldwin1,914
70522Centerville495
70523Charenton476
70340Amelia0

Overview of ZIP Codes in St. Mary Parish

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.
7
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 7 ZCTAs in St. Mary Parish, Louisiana (US Census).

Sources

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

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