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. John the Baptist Parish ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in St. John the Baptist Parish.

County State ZIP Code City Area Codes
St. John the Baptist Parish LA 70049 Edgard 225, 985
St. John the Baptist Parish LA 70051 Garyville 225, 985
St. John the Baptist Parish LA 70068 La Place 225, 985
St. John the Baptist Parish LA 70069 La Place 985
St. John the Baptist Parish LA 70076 Mount Airy 225, 985
St. John the Baptist Parish LA 70084 Reserve 985

Geographic Map of St. John the Baptist 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.