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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/03743

03743

ZIP 03743 is Claremont, New Hampshire, in Sullivan County; area code 603; Eastern time.

Type
Standard
Time zone
America/New_York
County
Sullivan
Population
13,704
Coordinates
43.3607, -72.3269
☼ Live from 03743 — Claremont, NH

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Local time: —

Where 03743 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 03743
  • 🔢 Type 03743 into a pocket calculator and turn it upside down: EhLEO — not quite a word, sorry.
  • ➕ As a number, 3,743 = 19 × 197. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111010011111
  • 🏠 Its numerical neighbours: 03741 (Canaan, NH, 27 mi away) and 03745 (Cornish, NH, 8 mi away).
  • 🔄 Backwards, 03743 becomes 34730, which is not a ZIP code at all.
  • 👥 30 other ZIP codes are made of exactly the same digits (04733, 30374, 30473, 30734, 33074, 33407, …). The farthest-flung twin is 34037 in APO AA, a military post office, 2,295 miles away.
  • 🧭 Farther north than 85% of all ZIP codes, and farther east than 94%.
  • 🎯1,372 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 03743 and you would come out at 43.36°S, 107.67°E — 906 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 24m of daylight. Shortest: 8h 58m.
  • 📏 At 59.1 square miles of land, 03743 is bigger than 64% of ZIP codes — room for about 45 Central Parks.
🌙 The sky over 03743 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population13,704This ZIP13,704
Households5,245This ZIP5,245
Housing units5,863This ZIP5,863
Median age43.1This ZIP43.1New Hampshire43.3US 38.9
Median household income$59,625This ZIP$59,625New Hampshire$99,031US $80,734
Median home value$206,600This ZIP$206,600New Hampshire$402,500US $332,700
Median gross rent$1,146This ZIP$1,146New Hampshire$1,491US $1,413
Bachelor's degree or higher21.4%This ZIP21.4%
Mean commute24.6 minThis ZIP24.6 min
Population density231.9 / sq miThis ZIP231.9 / sq mi

Business and tax activity

Business establishments357This ZIP357
Employees5,681This ZIP5,681
Annual payroll$373,530,000This ZIP$373,530,000
Tax returns filed6,600This ZIP6,600
Total adjusted gross income$390,753,000This ZIP$390,753,000

Land area

Land area59.10 sq miThis ZIP59.10 sq mi
Water area0.90 sq miThis ZIP0.90 sq mi

Other place names in 03743

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 03743

ZIPCityDistance
05030 Ascutney, VT 4.9 mi
03773 Newport, NH 6.3 mi
05156 Springfield, VT 7.6 mi
03745 Cornish, NH 7.8 mi
03601 Acworth, NH 8.0 mi
03603 Charlestown, NH 8.1 mi
05151 Perkinsville, VT 8.9 mi
03754 Guild, NH 9.5 mi
03746 Cornish Flat, NH 9.7 mi
05150 North Springfield, VT 10.3 mi

Find every ZIP code within 10 miles of 03743 →

Questions about this ZIP code

Where is ZIP code 03743?

03743 is in Claremont, New Hampshire, in Sullivan County, part of the Lebanon-Claremont, NH-VT micropolitan area. Its published point location is 43.3607, -72.3269.

What county is 03743 in?

03743 lies in Sullivan County.

What area code is 03743?

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

What time zone is 03743 in?

03743 uses America/New_York.

How many people live in 03743?

About 13,704 people live in ZIP code 03743, in 5,245 households, at 231.9 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 03743?

$59,625 a year, against $99,031 across New Hampshire.

What ZIP codes are near 03743?

The closest are 05030 (4.9 mi), 03773 (6.3 mi), 05156 (7.6 mi), 03745 (7.8 mi) and 03601 (8 mi).

Is 03743 a PO Box ZIP code?

03743 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “03743 ZIP Code — Claremont, New Hampshire (Sullivan County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03743

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