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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New Jersey ZIP Codes

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

State ZIP Code City County Area Codes
NJ 07940 Madison Morris County 862, 973
NJ 07945 Mendham Morris County 862, 908, 973
NJ 07946 Millington Morris County 862, 908, 973
NJ 07950 Morris Plains Morris County 862, 973
NJ 07960 Morristown Morris County 862, 908, 973
NJ 07961 Convent Station Morris County 862, 973
NJ 07962 Morristown Morris County 862
NJ 07963 Morristown Morris County 862
NJ 07970 Mount Freedom Morris County 862, 973
NJ 07974 New Providence Union County 862, 908, 973
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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.