There are 4 zip codes in Washington Parish, Louisiana. The most populated is 70438, located in Franklinton. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
7043820,345Franklinton
7042717,894Bogalusa
704265,912Angie
704502,332Mount Hermon

Zip Codes in Washington Parish, Louisiana by Population (2024)