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/NH/LARGEST-AREA

Largest ZIP Codes in New Hampshire by Land Area

What this measures. Land area of the Census tabulation area, in square miles. Water is excluded. Source: Census Gazetteer, data release 2026-10-12.

# ZIP City County Land area
1 03579 Errol Oxford 562.47 sq mi
2 03592 Pittsburg Coos 360.84 sq mi
3 03215 Waterville Valley Grafton 192.23 sq mi
4 03576 Colebrook Coos 168.64 sq mi
5 03581 Gorham Coos 156.13 sq mi
6 03570 Berlin Coos 137.45 sq mi
7 03593 Randolph Coos 133.96 sq mi
8 03588 Milan Coos 111.67 sq mi
9 03266 Rumney Grafton 110.35 sq mi
10 03590 North Stratford Coos 109.75 sq mi
11 03813 Center Conway Carroll 98.30 sq mi
12 03773 Newport Sullivan 94.17 sq mi
13 03574 Bethlehem Grafton 91.03 sq mi
14 03580 Franconia Grafton 88.33 sq mi
15 03470 Winchester Cheshire 88.22 sq mi
16 03818 Conway Carroll 84.46 sq mi
17 03244 Hillsborough Hillsborough 82.47 sq mi
18 03582 Groveton Coos 82.45 sq mi
19 03585 Lisbon Grafton 78.16 sq mi
20 03741 Canaan Grafton 76.43 sq mi
21 03222 Bristol Grafton 71.30 sq mi
22 03223 Campton Grafton 69.94 sq mi
23 03303 Concord Merrimack 67.80 sq mi
24 03251 Lincoln Grafton 66.34 sq mi
25 03846 Jackson Carroll 66.13 sq mi
26 03278 Warner Merrimack 63.47 sq mi
27 03785 Woodsville Grafton 62.50 sq mi
28 03584 Lancaster Coos 62.07 sq mi
29 03602 Alstead Cheshire 61.41 sq mi
30 03598 Whitefield Coos 61.36 sq mi
31 03254 Moultonborough Carroll 60.31 sq mi
32 03431 Keene Cheshire 59.96 sq mi
33 03743 Claremont Sullivan 59.10 sq mi
34 03281 Weare Hillsborough 59.07 sq mi
35 03812 Bartlett Carroll 58.63 sq mi
36 03262 North Woodstock Grafton 57.32 sq mi
37 03583 Jefferson Coos 56.02 sq mi
38 03768 Lyme Grafton 53.76 sq mi
39 03458 Peterborough Hillsborough 53.71 sq mi
40 03872 Sanbornville Carroll 52.04 sq mi
41 03227 Center Sandwich Carroll 51.45 sq mi
42 03285 Thornton Grafton 50.09 sq mi
43 03561 Littleton Grafton 49.96 sq mi
44 03269 Sanbornton Belknap 49.46 sq mi
45 03301 Concord Merrimack 49.23 sq mi
46 03884 Strafford Strafford 49.03 sq mi
47 03221 Bradford Merrimack 48.93 sq mi
48 03037 Deerfield Rockingham 48.65 sq mi
49 03833 Exeter Rockingham 48.49 sq mi
50 03781 Plainfield Sullivan 47.85 sq mi

Showing the top 50 of 247 ZIP codes in New Hampshire that have this figure and meet the threshold above. 03579 ranks 1st at 562.47 sq mi, against 47.85 sq mi in 50th place.

Other rankings for New Hampshire

Cite this page

zipcodes.pro. “Largest ZIP Codes in New Hampshire by Land Area.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/nh/largest-area

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