U.S. postal lookup

U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

42,735 verified records
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State directory

Louisiana ZIP Codes

Complete postal directory, details, and geographic map for the State of Louisiana.

State ZIP Code City County Area Codes
LA 70339 Pierre Part Assumption Parish 225, 985
LA 70340 Amelia St. Mary Parish 985
LA 70341 Belle Rose Assumption Parish 225, 985
LA 70342 Berwick St. Mary Parish 985
LA 70343 Bourg Terrebonne Parish 985
LA 70344 Chauvin Terrebonne Parish 985
LA 70345 Cut Off Lafourche Parish 985
LA 70346 Donaldsonville Ascension Parish 225, 985
LA 70352 Donner Terrebonne Parish 985
LA 70353 Dulac Terrebonne Parish 985
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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.