ZIP codes in St. Helena Parish
7 ZIPs touch St. Helena Parish, Louisiana. The blue dashed line is the county border; orange ZIPs reach into it.
7
ZIP codes
6
cross the county line
67,842
people in these ZIPs
64
counties in LA
Most people
St. Helena Parish ZIP list
More counties in Louisiana
- Rapides Parish39
- Red River Parish5
- Richland Parish8
- Sabine Parish13
- St. Bernard Parish7
- St. Charles Parish12
- St. James Parish9
- St. John the Baptist Parish7
- St. Landry Parish20
- St. Martin Parish9
- St. Mary Parish11
- St. Tammany Parish22
Questions people actually ask
How many ZIP codes are in St. Helena Parish, Louisiana?
7 ZIP codes reach into St. Helena Parish. 6 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in St. Helena Parish has the most people?
70706 (Denham Springs) has about 21,833 residents, the most of any ZIP touching St. Helena Parish, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in St. Helena 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. Helena 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