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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/03815

03815

ZIP 03815 is Center Strafford, New Hampshire, in Strafford County; area code 603; Eastern time.

Type
No street area
Time zone
America/New_York
County
Strafford
Coordinates
43.2629, -71.1071

The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

This ZIP code has no Census tabulation area of its own. Its point falls inside ZCTA 03884, whose figures describe that area — not this ZIP code.

☼ Live from 03815 — Center Strafford, NH

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Where 03815 is

This ZIP code has no Census tabulation area, so there is no boundary to draw — the marker is its published point location.

★ Weird and wonderful facts about 03815
  • 🔢 Type 03815 into a pocket calculator and turn it upside down: SIBEO — not quite a word, sorry.
  • ➕ As a number, 3,815 = 5 × 7 × 109. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111011100111
  • 🏠 Its numerical neighbours: 03814 (Center Ossipee, NH, 35 mi away) and 03816 (Center Tuftonboro, NH, 31 mi away).
  • 🔄 Backwards, 03815 becomes 51830, which is not a ZIP code at all.
  • 👥 55 other ZIP codes are made of exactly the same digits (01538, 01583, 01835, 01853, 03581, 03851, …). The farthest-flung twin is 85130 in Casa Grande, AZ, 2,299 miles away.
  • 🧭 Farther north than 84% of all ZIP codes, and farther east than 96%.
  • 🎯1,434 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 03815 and you would come out at 43.26°S, 108.89°E — 869 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 24m of daylight. Shortest: 8h 58m.
🌙 The sky over 03815 today
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Source: USGS.

Land area

ZIP codes near 03815

ZIPCityDistance
03884 Strafford, NH 3.3 mi
03825 Barrington, NH 4.7 mi
03291 West Nottingham, NH 6.0 mi
03839 Rochester, NH 6.1 mi
03867 Rochester, NH 6.4 mi
03261 Northwood, NH 6.8 mi
03866 Rochester, NH 7.2 mi
03835 Farmington, NH 7.5 mi
03290 Nottingham, NH 9.3 mi
03868 Rochester, NH 9.4 mi

Find every ZIP code within 10 miles of 03815 →

Questions about this ZIP code

Where is ZIP code 03815?

03815 is in Center Strafford, New Hampshire, in Strafford County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 43.2629, -71.1071.

What county is 03815 in?

03815 lies in Strafford County.

What area code is 03815?

Center Strafford uses area code 603, from NANPA's telephone records.

What time zone is 03815 in?

03815 uses America/New_York.

What ZIP codes are near 03815?

The closest are 03884 (3.3 mi), 03825 (4.7 mi), 03291 (6 mi), 03839 (6.1 mi) and 03867 (6.4 mi).

Is 03815 a PO Box ZIP code?

Possibly. The Census map gives this ZIP code no delivery area of its own, which usually means it serves post office boxes, a single organization or a post office rather than streets of homes.

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Cite this page

zipcodes.pro. “03815 ZIP Code — Center Strafford, New Hampshire (Strafford County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03815

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curl https://zipcodes.pro/zip/03815.json

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