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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.

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Essex County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Essex County.

County State ZIP Code City Area Codes
Essex County NJ 07102 Newark 201, 551, 862, 973
Essex County NJ 07103 Newark 862, 973
Essex County NJ 07104 Newark 201, 551, 862, 973
Essex County NJ 07105 Newark 201, 551, 862, 973
Essex County NJ 07106 Newark 862, 973
Essex County NJ 07107 Newark 862, 973
Essex County NJ 07108 Newark 862, 973
Essex County NJ 07109 Belleville 201, 551, 862, 973
Essex County NJ 07110 Nutley 201, 551, 862, 973
Essex County NJ 07111 Irvington 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.