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ZIP codes

ZIP codes in Union County, New Jersey

Union County has 27 ZIP codes. 23 lie entirely inside it and 4 are shared with neighboring counties, so part of their land and their people are elsewhere. About 579,297 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes
27
With 1% or more of their land inside
Entirely inside
23
99% or more of their land
Shared with other counties
4
Most with Somerset County (4)
Most populated ZIP
07083
58,170 people · Union
Least populated ZIP
07088
2,901 people · Vauxhall
Largest ZIP by land
07036
11 sq mi · Linden

Map of the ZIP codes in Union County

Essex County Hudson County Middlesex County Morris County Somerset County Richmond County, NY 07016 · Cranford · 24,074 people · 100% in the county 07023 · Fanwood · 7,799 people · 100% in the county 07027 · Garwood · 4,885 people · 100% in the county 07033 · Kenilworth · 8,401 people · 100% in the county 07036 · Linden · 45,671 people · 100% in the county 07060 · Plainfield · 48,363 people · 62% in the county 07062 · Plainfield · 15,399 people · 88% in the county 07063 · Plainfield · 14,235 people · 61% in the county 07065 · Rahway · 30,109 people · 100% in the county 07066 · Westfield · 15,622 people · 100% in the county 07076 · 24,843 people · 100% in the county 07081 · Springfield · 17,171 people · 100% in the county 07083 · Union · 58,170 people · 100% in the county 07088 · Vauxhall · 2,901 people · 100% in the county 07090 · Westfield · 31,111 people · 100% in the county 07092 · Mountainside · 7,049 people · 100% in the county 07201 · Elizabeth · 28,467 people · 100% in the county 07202 · Elizabeth · 44,968 people · 100% in the county 07203 · Roselle · 22,646 people · 100% in the county 07204 · Roselle Park · 14,093 people · 100% in the county 07205 · Kean University · 22,349 people · 100% in the county 07206 · Elizabeth · 31,930 people · 100% in the county 07208 · Elizabeth · 31,937 people · 100% in the county 07901 · Summit · 24,314 people · 100% in the county 07922 · New Providence · 12,195 people · 100% in the county 07974 · New Providence · 13,349 people · 100% in the county 08812 · Dunellen · 14,224 people · 1.2% in the county
  • Entirely in the county (99% or more of its land)
  • Shared, mostly in this county
  • Shared, mostly in other counties
  • Neighboring counties
Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Union County

27 ZIP codes in Union County, NJ, by number
ZIP code Main city Population Land in the county Residents in the county
07016 Cranford 24,074 100% 24,074
07023 Fanwood 7,799 100% 7,799
07027 Garwood 4,885 100% 4,885
07033 Kenilworth 8,401 100% 8,401
07036 Linden 45,671 100% 45,671
07060 Plainfield 48,363 62% ≈ 29,946
07062 Plainfield 15,399 88% ≈ 13,901
07063 Plainfield 14,235 61% ≈ 10,831
07065 Rahway 30,109 100% 30,109
07066 Westfield 15,622 100% 15,622
07076 — 24,843 100% 24,843
07081 Springfield 17,171 100% 17,171
07083 Union 58,170 100% 58,170
07088 Vauxhall 2,901 100% 2,901
07090 Westfield 31,111 100% 31,111
07092 Mountainside 7,049 100% 7,049
07201 Elizabeth 28,467 100% 28,467
07202 Elizabeth 44,968 100% 44,968
07203 Roselle 22,646 100% 22,646
07204 Roselle Park 14,093 100% 14,093
07205 Kean University 22,349 100% 22,349
07206 Elizabeth 31,930 100% 31,930
07208 Elizabeth 31,937 100% 31,937
07901 Summit 24,314 100% 24,314
07922 New Providence 12,195 100% 12,195
07974 New Providence 13,349 100% 13,349
08812 Dunellen 14,224 1.2% ≈ 565

ZIP codes shared with other counties

These 4 ZIP codes have part of their land in another county. The first figure is the share of their land in Union County; then, where the rest lies.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Elizabeth (4), Plainfield (3), New Providence (2), Westfield (2), Cranford (1), and Dunellen (1); 19 places in all.

They start with 4 different three-digit prefixes, one per USPS sorting center: 070, 072, 079, and 088.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

  • U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
  • U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
  • U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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