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

Jefferson Parish ZIP Codes

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

County State ZIP Code City Area Codes
Jefferson Parish LA 70001 Metairie 504
Jefferson Parish LA 70002 Metairie 504
Jefferson Parish LA 70003 Metairie 504
Jefferson Parish LA 70004 Metairie 504
Jefferson Parish LA 70005 Metairie 504
Jefferson Parish LA 70006 Metairie 504
Jefferson Parish LA 70009 Metairie 504
Jefferson Parish LA 70010 Metairie 504
Jefferson Parish LA 70011 Metairie 504
Jefferson Parish LA 70033 Metairie 504
Page 1 of 4

Geographic Map of Jefferson 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.