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/AK/HIGHEST-DENSITY

Most Densely Populated ZIP Codes in Alaska

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 99508 Anchorage Anchorage 5,103
2 99517 Anchorage Anchorage 5,084
3 99518 Anchorage Anchorage 2,578
4 99692 Dutch Harbor Aleutians West 2,437
5 99501 Anchorage Anchorage 2,407
6 99515 Anchorage Anchorage 2,068
7 99775 Fairbanks Fairbanks North Star 1,717
8 99502 Anchorage Anchorage 1,423
9 99727 Buckland Northwest Arctic 1,303
10 99824 Douglas Juneau 1,245
11 99504 Anchorage Anchorage 1,143
12 99662 Scammon Bay Kusilvak 940
13 99703 Fort Wainwright Fairbanks North Star 858
14 99763 Noorvik Northwest Arctic 829
15 99507 Anchorage Anchorage 789
16 99503 Anchorage Bethel 627
17 99750 Kivalina Northwest Arctic 497
18 99516 Anchorage Anchorage 490
19 99650 Pilot Station Kusilvak 444
20 99749 Kiana Northwest Arctic 409
21 99655 Quinhagak Bethel 403
22 99654 Wasilla Matanuska-Susitna 393
23 99506 Jber Anchorage 342
24 99620 Kotlik Kusilvak 326
25 99784 White Mountain Nome 326
26 99785 Brevig Mission Nome 314
27 99578 Eek Bethel 280
28 99680 Tuntutuliak Bethel 275
29 99771 Shaktoolik Nome 269
30 99723 Barrow North Slope 253
31 99626 Lower Kalskag Bethel 194
32 99552 Akiak Bethel 176
33 99778 Teller Nome 171
34 99702 Eielson Afb Fairbanks North Star 155
35 99705 North Pole Fairbanks North Star 152
36 99769 Savoonga Nome 148
37 99634 Napakiak Bethel 133
38 99559 Bethel Bethel 128
39 99604 Hooper Bay Kusilvak 120
40 99505 Jber Anchorage 120
41 99561 Chefornak Bethel 118
42 99783 Wales Nome 106
43 99551 Akiachak Bethel 105
44 99577 Eagle River Anchorage 99
45 99621 Kwethluk Bethel 96
46 99585 Marshall Kusilvak 95
47 99725 Ester Fairbanks North Star 93
48 99623 Wasilla Matanuska-Susitna 91
49 99641 Nunapitchuk Bethel 88
50 99758 Minto Yukon-Koyukuk 74

Showing the top 50 of 245 ZIP codes in Alaska that have this figure . 99508 ranks 1st at 5,103, against 74 in 50th place.

Other rankings for Alaska

Cite this page

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

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