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/AL/MOST-TAX-RETURNS

ZIP Codes With the Most Tax Returns Filed in Alabama

What this measures. Number of individual income tax returns filed. A rough proxy for how many households a ZIP code contains, available where census figures are not. Source: IRS Statistics of Income, ZIP code data, data release 2026-10-12.

# ZIP City County Returns filed
1 35242 Birmingham Shelby 26,740
2 36117 Montgomery Montgomery 22,930
3 36695 Mobile Mobile 22,630
4 35758 Madison Madison 22,290
5 35215 Birmingham Jefferson 19,630
6 35405 Tuscaloosa Tuscaloosa 18,780
7 36830 Auburn Lee 18,310
8 35244 Birmingham Shelby 17,890
9 36535 Foley Baldwin 17,760
10 36116 Montgomery Montgomery 17,720
11 36526 Daphne Baldwin 17,700
12 35226 Birmingham Jefferson 17,140
13 36532 Fairhope Baldwin 16,640
14 36608 Mobile Mobile 16,410
15 36330 Enterprise Coffee 16,300
16 36301 Dothan Houston 16,130
17 35216 Birmingham Jefferson 15,360
18 35603 Decatur Morgan 14,780
19 35803 Huntsville Madison 14,610
20 35173 Trussville Jefferson 14,290
21 35806 Huntsville Madison 14,030
22 35811 Huntsville Madison 13,810
23 35749 Harvest Madison 13,580
24 35601 Decatur Morgan 13,570
25 35810 Huntsville Madison 13,380
26 36303 Dothan Houston 12,900
27 35630 Florence Lauderdale 12,660
28 35756 Madison Limestone 12,560
29 35007 Alabaster Shelby 12,540
30 35124 Pelham Shelby 12,300
31 35613 Athens Limestone 12,060
32 36067 Prattville Autauga 11,580
33 35802 Huntsville Madison 11,540
34 35209 Birmingham Jefferson 11,460
35 35640 Hartselle Morgan 11,370
36 35611 Athens Limestone 11,090
37 36801 Opelika Lee 11,040
38 35022 Bessemer Jefferson 10,820
39 36109 Montgomery Montgomery 10,810
40 35801 Huntsville Madison 10,570
41 36609 Mobile Mobile 10,540
42 36605 Mobile Mobile 10,360
43 35763 Owens Cross Roads Madison 10,350
44 35023 Bessemer Jefferson 10,330
45 36582 Theodore Mobile 10,320
46 35243 Birmingham Jefferson 10,140
47 36066 Prattville Autauga 9,880
48 35211 Birmingham Jefferson 9,720
49 35126 Pinson Jefferson 9,660
50 35757 Madison Madison 9,590

Showing the top 50 of 571 ZIP codes in Alabama that have this figure . 35242 ranks 1st at 26,740, against 9,590 in 50th place.

Other rankings for Alabama

Cite this page

zipcodes.pro. “ZIP Codes With the Most Tax Returns Filed in Alabama.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/al/most-tax-returns

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