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
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State directory

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 07831 Changewater Warren County 908
NJ 07832 Columbia Warren County 272, 484, 570, 610, 835, 908
NJ 07833 Delaware Warren County 272, 570, 908
NJ 07834 Denville Morris County 862, 973
NJ 07836 Flanders Morris County 862, 908, 973
NJ 07837 Glasser Sussex County 862
NJ 07838 Great Meadows Warren County 908
NJ 07839 Greendell Sussex County 862
NJ 07840 Hackettstown Warren County 862, 908, 973
NJ 07842 Hibernia Morris County 862, 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.