ZIP codes in St. James Parish
9 ZIPs touch St. James Parish, Louisiana. The blue dashed line is the county border; orange ZIPs reach into it.
9
ZIP codes
1
cross the county line
20,536
people in these ZIPs
64
counties in LA
Most people
St. James Parish ZIP list
More counties in Louisiana
- Red River Parish5
- Richland Parish8
- Sabine Parish13
- St. Bernard Parish7
- St. Charles Parish12
- St. Helena Parish7
- St. John the Baptist Parish7
- St. Landry Parish20
- St. Martin Parish9
- St. Mary Parish11
- St. Tammany Parish22
- Tangipahoa Parish22
Questions people actually ask
How many ZIP codes are in St. James Parish, Louisiana?
9 ZIP codes reach into St. James Parish, including 2 PO Box or single-address ZIPs placed by the town they serve. 1 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in St. James Parish has the most people?
70090 (Vacherie) has about 6,447 residents, the most of any ZIP touching St. James Parish, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in St. James Parish and another county?
Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in St. James Parish. For one address, pin the exact spot on the ZIP finder to see its county.
Where does this list come from?
ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.
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Updated 2026-11-10 · Where the data comes from