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
All states and U.S. territories
Maps and coordinates
County directory

St. Landry Parish ZIP Codes

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

County State ZIP Code City Area Codes
St. Landry Parish LA 70512 Arnaudville 337
St. Landry Parish LA 70535 Eunice 337
St. Landry Parish LA 70541 Grand Coteau 337
St. Landry Parish LA 70550 Lawtell 337
St. Landry Parish LA 70551 Leonville 337
St. Landry Parish LA 70570 Opelousas 337
St. Landry Parish LA 70571 Opelousas 337
St. Landry Parish LA 70577 Port Barre 337
St. Landry Parish LA 70584 Sunset 337
St. Landry Parish LA 70589 Washington 318, 337
Page 1 of 2

Geographic Map of St. Landry Parish

Postal context

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.