Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — RANKINGS/NJ/HIGHEST-DENSITY

Most Densely Populated ZIP Codes in New Jersey

What this measures. People per square mile of land area. Source: Census American Community Survey and Gazetteer, data release 2026-10-12.

# ZIP City County People per sq mi
1 07093 West New York Hudson 53,759
2 07087 Union City Hudson 50,930
3 07030 Hoboken Hudson 46,972
4 07302 Jersey City Hudson 39,232
5 07311 Jersey City Hudson 31,741
6 07010 Cliffside Park Bergen 26,968
7 08544 Princeton Mercer 26,458
8 07522 Paterson Passaic 26,301
9 07107 Newark Essex 26,254
10 07310 Jersey City Hudson 26,211
11 07106 Newark Essex 25,676
12 07304 Jersey City Hudson 24,966
13 07307 Jersey City Hudson 22,386
14 07055 Passaic Passaic 22,372
15 07514 Paterson Passaic 22,249
16 07086 Weehawken Hudson 21,782
17 07112 Newark Essex 21,675
18 07111 Irvington Essex 20,888
19 07108 Newark Essex 20,877
20 07104 Newark Essex 20,650
21 07513 Paterson Passaic 20,380
22 07502 Paterson Passaic 19,974
23 07501 Paterson Passaic 19,712
24 07202 Elizabeth Union 19,441
25 07505 Paterson Passaic 19,147
26 07524 Paterson Passaic 18,216
27 07017 East Orange Essex 18,086
28 07306 Jersey City Hudson 18,084
29 07206 Elizabethport Union 17,969
30 07022 Fairview Bergen 17,890
31 07208 Elizabeth Union 17,822
32 07018 East Orange Essex 17,403
33 07029 Harrison Hudson 17,402
34 07103 Newark Essex 17,330
35 08629 Trenton Mercer 16,451
36 07650 Palisades Park Bergen 16,376
37 07024 Fort Lee Bergen 15,927
38 07504 Paterson Passaic 15,773
39 07026 Garfield Bergen 15,530
40 07050 Orange Essex 15,495
41 07020 Edgewater Bergen 15,200
42 07305 Jersey City Hudson 12,660
43 07503 Paterson Passaic 12,400
44 07603 Bogota Bergen 12,397
45 07011 Clifton Passaic 12,395
46 07105 Newark Essex 12,307
47 07002 Bayonne Hudson 12,288
48 08609 Trenton Mercer 12,111
49 07057 Wallington Bergen 11,961
50 07047 North Bergen Hudson 11,937

Showing the top 50 of 598 ZIP codes in New Jersey that have this figure . 07093 ranks 1st at 53,759, against 11,937 in 50th place.

Other rankings for New Jersey

Cite this page

zipcodes.pro. “Most Densely Populated ZIP Codes in New Jersey.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/nj/highest-density

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