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/ME/SMALLEST-AREA

Smallest ZIP Codes in Maine 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 04234 East Wilton Franklin 0.01 sq mi
2 04286 West Bethel Oxford 0.01 sq mi
3 04341 Coopers Mills Lincoln 0.03 sq mi
4 04271 Paris Oxford 0.04 sq mi
5 03910 York Beach York 0.05 sq mi
6 04926 China Village Kennebec 0.05 sq mi
7 04975 Shawmut Somerset 0.06 sq mi
8 04006 Biddeford Pool York 0.06 sq mi
9 04431 East Orland Hancock 0.08 sq mi
10 04992 West Farmington Franklin 0.09 sq mi
11 04940 Farmington Falls Franklin 0.11 sq mi
12 04227 East Dixfield Oxford 0.15 sq mi
13 04415 Brownville Junction Piscataquis 0.17 sq mi
14 04489 Stillwater Penobscot 0.25 sq mi
15 04570 Squirrel Island Lincoln 0.27 sq mi
16 04057 North Bridgton Cumberland 0.33 sq mi
17 04541 Chamberlain Lincoln 0.35 sq mi
18 03911 York Harbor York 0.36 sq mi
19 04683 Sunset Hancock 0.41 sq mi
20 04267 North Waterford Oxford 0.45 sq mi
21 04918 Belgrade Lakes Kennebec 0.60 sq mi
22 04063 Ocean Park York 0.73 sq mi
23 04359 South Gardiner Kennebec 0.75 sq mi
24 04646 Islesford Hancock 0.79 sq mi
25 04019 Cliff Island Cumberland 0.83 sq mi
26 04852 Monhegan Lincoln 0.85 sq mi
27 04469 Orono Penobscot 0.86 sq mi
28 04003 Bailey Island Cumberland 1.04 sq mi
29 04855 Port Clyde Knox 1.17 sq mi
30 04575 West Boothbay Harbor Lincoln 1.17 sq mi
31 04108 Peaks Island Cumberland 1.22 sq mi
32 04109 Portland Cumberland 1.24 sq mi
33 04050 Long Island Cumberland 1.44 sq mi
34 04613 Birch Harbor Hancock 1.50 sq mi
35 04944 Hinckley Somerset 1.73 sq mi
36 04669 Prospect Harbor Hancock 1.74 sq mi
37 04056 Newfield York 1.76 sq mi
38 04066 Orrs Island Cumberland 1.80 sq mi
39 04851 Matinicus Knox 1.92 sq mi
40 04101 Portland Cumberland 2.03 sq mi
41 04571 Trevett Lincoln 2.08 sq mi
42 04346 Randolph Kennebec 2.14 sq mi
43 04737 Clayton Lake Aroostook 2.19 sq mi
44 04110 Cumberland Foreside Cumberland 2.33 sq mi
45 04635 Frenchboro Hancock 2.34 sq mi
46 04625 Cranberry Isles Hancock 2.38 sq mi
47 04673 Sargentville Hancock 3.05 sq mi
48 04675 Seal Harbor Hancock 3.10 sq mi
49 04650 Little Deer Isle Hancock 3.39 sq mi
50 04653 Bass Harbor Hancock 3.55 sq mi

Showing the top 50 of 426 ZIP codes in Maine that have this figure and meet the threshold above. 04234 ranks 1st at 0.01 sq mi, against 3.55 sq mi in 50th place.

Other rankings for Maine

Cite this page

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

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