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U.S. ZIP Codes Database 2026

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Ascension Parish ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Ascension Parish.

County State ZIP Code City Area Codes
Ascension Parish LA 70346 Donaldsonville 225, 985
Ascension Parish LA 70707 Gonzales 225
Ascension Parish LA 70718 Brittany 225
Ascension Parish LA 70725 Darrow 225
Ascension Parish LA 70728 Duplessis 225
Ascension Parish LA 70734 Geismar 225
Ascension Parish LA 70737 Gonzales 225
Ascension Parish LA 70738 Burnside 225
Ascension Parish LA 70769 Prairieville 225
Ascension Parish LA 70774 Saint Amant 225
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.