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/HI/HIGHEST-DENSITY

Most Densely Populated ZIP Codes in Hawaii

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 96826 Honolulu Honolulu 27,189
2 96858 Fort Shafter Honolulu 20,188
3 96814 Honolulu Honolulu 20,024
4 96815 Honolulu Honolulu 12,176
5 96848 Honolulu Honolulu 8,070
6 96857 Schofield Barracks Honolulu 7,635
7 96813 Honolulu Honolulu 7,533
8 96817 Honolulu Honolulu 5,966
9 96822 Honolulu Honolulu 5,446
10 96816 Honolulu Honolulu 5,319
11 96818 Honolulu Honolulu 5,079
12 96860 Jbphh Honolulu 5,043
13 96706 Ewa Beach Honolulu 4,904
14 96797 Waipahu Honolulu 3,761
15 96853 Jbphh Honolulu 3,329
16 96863 Mcbh Kaneohe Bay Honolulu 3,065
17 96825 Honolulu Honolulu 2,839
18 96734 Kailua Honolulu 2,332
19 96732 Kahului Maui 2,312
20 96819 Honolulu Honolulu 2,304
21 96789 Mililani Honolulu 2,054
22 96747 Kaumakani Kauai 1,833
23 96821 Honolulu Honolulu 1,733
24 96744 Kaneohe Honolulu 1,706
25 96701 Aiea Honolulu 1,551
26 96730 Kaaawa Honolulu 1,393
27 96782 Pearl City Honolulu 1,273
28 96707 Kapolei Honolulu 1,124
29 96796 Waimea Kauai 983
30 96795 Waimanalo Honolulu 931
31 96792 Waianae Honolulu 813
32 96765 Lawai Kauai 807
33 96753 Kihei Maui 770
34 96705 Eleele Kauai 750
35 96716 Hanapepe Kauai 683
36 96746 Kapaa Kauai 648
37 96762 Laie Honolulu 461
38 96786 Wahiawa Honolulu 456
39 96793 Wailuku Maui 430
40 96768 Makawao Maui 429
41 96719 Hawi Hawaii 339
42 96749 Keaau Hawaii 320
43 96731 Kahuku Honolulu 287
44 96783 Pepeekeo Hawaii 271
45 96756 Koloa Kauai 265
46 96779 Paia Maui 239
47 96780 Papaaloa Hawaii 226
48 96761 Lahaina Maui 220
49 96760 Kurtistown Hawaii 213
50 96764 Laupahoehoe Hawaii 213

Showing the top 50 of 97 ZIP codes in Hawaii that have this figure . 96826 ranks 1st at 27,189, against 213 in 50th place.

Other rankings for Hawaii

Cite this page

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

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