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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Louisiana ZIP Codes

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

State ZIP Code City County Area Codes
LA 70541 Grand Coteau St. Landry Parish 337
LA 70542 Gueydan Vermilion Parish 337
LA 70543 Iota Acadia Parish 337
LA 70544 Jeanerette Iberia Parish 337
LA 70546 Jennings Jefferson Davis Parish 337
LA 70548 Kaplan Vermilion Parish 337
LA 70549 Lake Arthur Jefferson Davis Parish 337
LA 70550 Lawtell St. Landry Parish 337
LA 70551 Leonville St. Landry Parish 337
LA 70552 Loreauville Iberia Parish 337
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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.