Rules for ZIP Code 70403
Hammond, LA · Tangipahoa Parish
ZIP 70403 is governed by the city of Hammond, LA. We do not hold its code yet, and Tangipahoa Parish ordinances do not apply inside its limits.
ZIP code 70403 lies in the city of Hammond, LA, which holds about 63% of the ZIP's residents and writes its own local code. We have not added Hammond's ordinances yet, so nothing is shown below: Tangipahoa Parish rules govern only unincorporated land and do not reach inside Hammond.
ZIP codes do not follow city lines. 70403 also covers:
- unincorporated Tangipahoa Parish~34% of residents
Shares are estimates from 2020 Census geography. If your address is in one of these, its rules apply instead.
Each topic below links to the full ordinance breakdown with specific code sections, fine amounts, and answers to common questions. The data is sourced from the official municipal code and verified by our editorial team.
Hammond is not covered yet
The city of Hammond writes its own code; the county's rules do not apply inside it.Request Hammond coverage →
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