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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 — ZIP/03259

03259

ZIP 03259 is North Sandwich, New Hampshire, in Carroll County; area code 603; Eastern time.

Type
Standard
Time zone
America/New_York
County
Carroll
Metro area
none
Population
252
Coordinates
43.8782, -71.4992
☼ Live from 03259 — North Sandwich, NH

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Local time: —

Where 03259 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 03259
  • 🔢 Type 03259 into a pocket calculator and turn it upside down: GSZEO — not quite a word, sorry.
  • ➕ 03259 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 110010111011
  • 🏠 Its numerical neighbours: 03258 (Chichester, NH, 43 mi away) and 03260 (North Sutton, NH, 41 mi away).
  • 🔄 Backwards, 03259 becomes 95230 — and that is a real ZIP code: Farmington, CA, 2,571 miles away.
  • 👥 57 other ZIP codes are made of exactly the same digits (02359, 02539, 03592, 09235, 09352, 20395, …). The farthest-flung twin is 09235 in APO AE, a military post office, 3,725 miles away.
  • 🧭 Farther north than 87% of all ZIP codes, and farther east than 95%.
  • 🎯1,415 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 03259 and you would come out at 43.88°S, 108.50°E — 916 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 28m of daylight. Shortest: 8h 54m.
  • 📏 At 33.3 square miles of land, 03259 is bigger than 48% of ZIP codes — room for about 25 Central Parks.
🌙 The sky over 03259 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population252This ZIP252
Households145This ZIP145
Housing units222This ZIP222
Median age66.0This ZIP66.0New Hampshire43.3US 38.9
Median household income$84,872This ZIP$84,872New Hampshire$99,031US $80,734
Median home value$396,500This ZIP$396,500New Hampshire$402,500US $332,700
Bachelor's degree or higher64.6%This ZIP64.6%
Mean commute35.4 minThis ZIP35.4 min
Population density7.6 / sq miThis ZIP7.6 / sq mi

Business and tax activity

Business establishments9This ZIP9
Employees62This ZIP62
Annual payroll$3,026,000This ZIP$3,026,000
Tax returns filed170This ZIP170
Total adjusted gross income$14,868,000This ZIP$14,868,000

Land area

Land area33.27 sq miThis ZIP33.27 sq mi
Water area0.14 sq miThis ZIP0.14 sq mi

ZIP codes near 03259

ZIPCityDistance
03227 Center Sandwich, NH 4.6 mi
03285 Thornton, NH 8.3 mi
03897 Wonalancet, NH 8.8 mi
03245 Holderness, NH 9.1 mi
03223 Campton, NH 9.4 mi
03883 South Tamworth, NH 10.1 mi
03886 Tamworth, NH 10.2 mi
03293 Woodstock, NH 11.1 mi
03226 Center Harbor, NH 12.1 mi
03818 Conway, NH 12.5 mi

Find every ZIP code within 10 miles of 03259 →

Questions about this ZIP code

Where is ZIP code 03259?

03259 is in North Sandwich, New Hampshire, in Carroll County. Its published point location is 43.8782, -71.4992.

What county is 03259 in?

03259 lies in Carroll County.

What area code is 03259?

North Sandwich uses area code 603, from NANPA's telephone records.

What time zone is 03259 in?

03259 uses America/New_York.

How many people live in 03259?

About 252 people live in ZIP code 03259, in 145 households, at 7.6 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 03259?

$84,872 a year, against $99,031 across New Hampshire.

What ZIP codes are near 03259?

The closest are 03227 (4.6 mi), 03285 (8.3 mi), 03897 (8.8 mi), 03245 (9.1 mi) and 03223 (9.4 mi).

Is 03259 a PO Box ZIP code?

03259 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “03259 ZIP Code — North Sandwich, New Hampshire (Carroll County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03259

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