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/MS/HIGHEST-DENSITY

Most Densely Populated ZIP Codes in Mississippi

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 39217 Jackson Hinds 11,364
2 39058 Clinton Hinds 6,720
3 39406 Hattiesburg Forrest 5,691
4 39210 Jackson Hinds 4,844
5 38677 University Lafayette 4,557
6 39762 Mississippi State Oktibbeha 4,130
7 39531 Biloxi Harrison 2,849
8 39206 Jackson Hinds 2,629
9 39507 Gulfport Harrison 2,258
10 39174 Tougaloo Madison 1,980
11 39211 Jackson Hinds 1,936
12 39203 Jackson Hinds 1,774
13 39202 Jackson Hinds 1,763
14 38839 Derma Calhoun 1,714
15 39530 Biloxi Harrison 1,711
16 38637 Horn Lake DeSoto 1,680
17 38671 Southaven DeSoto 1,678
18 39567 Pascagoula Jackson 1,615
19 39501 Gulfport Harrison 1,572
20 39204 Jackson Hinds 1,405
21 38672 Southaven DeSoto 1,261
22 39540 Diberville Harrison 1,160
23 39440 Laurel Jones 1,095
24 39534 Biloxi Harrison 1,060
25 39576 Waveland Hancock 980
26 39216 Jackson Hinds 936
27 39560 Long Beach Harrison 923
28 39525 Diamondhead Hancock 892
29 39212 Jackson Hinds 868
30 39157 Ridgeland Madison 818
31 39581 Pascagoula Jackson 813
32 39564 Ocean Springs Jackson 812
33 39208 Pearl Rankin 720
34 39110 Madison Madison 679
35 38622 Crowder Panola 662
36 39213 Jackson Hinds 661
37 38654 Olive Branch DeSoto 631
38 39272 Byram Hinds 611
39 39553 Gautier Jackson 610
40 39563 Moss Point Jackson 599
41 39342 Marion Lauderdale 594
42 38760 Metcalfe Washington 572
43 38733 Cleveland Bolivar 550
44 39736 Artesia Lowndes 537
45 39056 Clinton Hinds 495
46 39503 Gulfport Harrison 482
47 38723 Avon Washington 482
48 39402 Hattiesburg Lamar 479
49 38879 Verona Lee 471
50 38947 North Carrollton Carroll 457

Showing the top 50 of 427 ZIP codes in Mississippi that have this figure . 39217 ranks 1st at 11,364, against 457 in 50th place.

Other rankings for Mississippi

Cite this page

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

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