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/SMALLEST-AREA

Smallest ZIP Codes in Alabama by Land Area

What this measures. Land area of the Census tabulation area, smallest first. These are almost always dense urban ZIP codes covering a few city blocks. Source: Census Gazetteer, data release 2026-10-12.

# ZIP City County Land area
1 36101 Montgomery Montgomery 0.01 sq mi
2 35249 Birmingham Jefferson 0.01 sq mi
3 35573 Kansas Walker 0.01 sq mi
4 35013 Allgood Blount 0.03 sq mi
5 36114 Montgomery Montgomery 0.03 sq mi
6 36503 Atmore Escambia 0.03 sq mi
7 36652 Mobile Mobile 0.03 sq mi
8 35181 Watson Jefferson 0.04 sq mi
9 36130 Montgomery Montgomery 0.04 sq mi
10 35185 Westover Shelby 0.06 sq mi
11 35036 Brookside Jefferson 0.06 sq mi
12 35074 Green Pond Bibb 0.06 sq mi
13 35990 Walnut Grove Etowah 0.06 sq mi
14 35032 Bon Air Talladega 0.06 sq mi
15 36663 Mobile Mobile 0.06 sq mi
16 35632 Florence Lauderdale 0.09 sq mi
17 35254 Birmingham Jefferson 0.10 sq mi
18 35559 Glen Allen Fayette 0.11 sq mi
19 36865 Loachapoka Lee 0.12 sq mi
20 35487 Tuscaloosa Tuscaloosa 0.12 sq mi
21 36564 Point Clear Baldwin 0.13 sq mi
22 36764 Nanafalia Marengo 0.13 sq mi
23 36057 Mount Meigs Montgomery 0.17 sq mi
24 36543 Huxford Escambia 0.17 sq mi
25 35119 New Castle Jefferson 0.17 sq mi
26 35070 Garden City Cullman 0.18 sq mi
27 35577 Natural Bridge Winston 0.18 sq mi
28 36038 Gantt Covington 0.19 sq mi
29 36851 Cottonton Russell 0.22 sq mi
30 35229 Birmingham Jefferson 0.26 sq mi
31 36547 Gulf Shores Baldwin 0.27 sq mi
32 35052 Cook Springs St. Clair 0.33 sq mi
33 35060 Docena Jefferson 0.34 sq mi
34 36559 Montrose Baldwin 0.39 sq mi
35 36082 Troy Pike 0.39 sq mi
36 36476 River Falls Covington 0.40 sq mi
37 35545 Belk Fayette 0.42 sq mi
38 35896 Huntsville Madison 0.43 sq mi
39 35615 Belle Mina Limestone 0.50 sq mi
40 36115 Montgomery Montgomery 0.56 sq mi
41 35584 Sipsey Walker 0.56 sq mi
42 36113 Montgomery Montgomery 0.68 sq mi
43 36455 Lockhart Covington 0.70 sq mi
44 36849 Auburn University Lee 0.74 sq mi
45 36568 Saint Elmo Mobile 0.76 sq mi
46 36439 Excel Monroe 0.87 sq mi
47 36008 Booth Autauga 0.88 sq mi
48 36688 Mobile Mobile 0.97 sq mi
49 36267 Millerville Clay 1.00 sq mi
50 36555 Magnolia Springs Baldwin 1.01 sq mi

Showing the top 50 of 656 ZIP codes in Alabama that have this figure and meet the threshold above. 36101 ranks 1st at 0.01 sq mi, against 1.01 sq mi in 50th place.

Other rankings for Alabama

Cite this page

zipcodes.pro. “Smallest ZIP Codes in Alabama by Land Area.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/al/smallest-area

Underlying data is public domain or openly licensed — sources, vintages and licences.