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zipcodes.pro — ZIP/03781

03781

ZIP 03781 is Plainfield, New Hampshire, in Sullivan County; area code 603; Eastern time.

Type
Standard
Time zone
America/New_York
County
Sullivan
Population
1,918
Coordinates
43.5601, -72.2993
☼ Live from 03781 — Plainfield, NH

Weather right now

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Local time: —

Where 03781 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 03781
  • 🔢 Type 03781 into a pocket calculator and turn it upside down: IBLEO — not quite a word, sorry.
  • ➕ As a number, 3,781 = 19 × 199. Its digits add up to 19, a total 2,454 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111011000101
  • 🏠 Its numerical neighbours: 03780 (Pike, NH, 37 mi away) and 03782 (Sunapee, NH, 16 mi away).
  • 🔄 Backwards, 03781 becomes 18730, which is not a ZIP code at all.
  • 👥 52 other ZIP codes are made of exactly the same digits (01378, 03817, 03871, 07831, 08317, 08731, …). The farthest-flung twin is 83701 in Boise, ID, 2,175 miles away.
  • 🧭 Farther north than 85% of all ZIP codes, and farther east than 94%.
  • 🎯1,374 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 03781 and you would come out at 43.56°S, 107.70°E — 916 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 26m of daylight. Shortest: 8h 56m.
  • 📏 At 47.8 square miles of land, 03781 is bigger than 58% of ZIP codes — room for about 36 Central Parks.
🌙 The sky over 03781 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population1,918This ZIP1,918
Households695This ZIP695
Housing units848This ZIP848
Median age38.8This ZIP38.8New Hampshire43.3US 38.9
Median household income$109,659This ZIP$109,659New Hampshire$99,031US $80,734
Median home value$426,400This ZIP$426,400New Hampshire$402,500US $332,700
Median gross rent$1,604This ZIP$1,604New Hampshire$1,491US $1,413
Bachelor's degree or higher46.3%This ZIP46.3%
Mean commute20.0 minThis ZIP20.0 min
Population density40.1 / sq miThis ZIP40.1 / sq mi

Business and tax activity

Business establishments39This ZIP39
Employees233This ZIP233
Annual payroll$11,039,000This ZIP$11,039,000
Tax returns filed920This ZIP920
Total adjusted gross income$104,219,000This ZIP$104,219,000

Land area

Land area47.85 sq miThis ZIP47.85 sq mi
Water area0.74 sq miThis ZIP0.74 sq mi

Other place names in 03781

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

ZIP codes near 03781

ZIPCityDistance
03770 Meriden, NH 2.8 mi
05052 North Hartland, VT 4.0 mi
03746 Cornish Flat, NH 4.4 mi
03784 West Lebanon, NH 5.4 mi
03766 Lebanon, NH 6.0 mi
03745 Cornish, NH 6.0 mi
03756 Lebanon, NH 6.2 mi
05049 Hartland Four Corners, VT 6.3 mi
05009 White River Junction, VT 6.5 mi
05048 Hartland, VT 6.6 mi

Find every ZIP code within 10 miles of 03781 →

Questions about this ZIP code

Where is ZIP code 03781?

03781 is in Plainfield, New Hampshire, in Sullivan County, part of the Lebanon-Claremont, NH-VT micropolitan area. Its published point location is 43.5601, -72.2993.

What county is 03781 in?

03781 lies in Sullivan County.

What area code is 03781?

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

What time zone is 03781 in?

03781 uses America/New_York.

How many people live in 03781?

About 1,918 people live in ZIP code 03781, in 695 households, at 40.1 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 03781?

$109,659 a year, against $99,031 across New Hampshire.

What ZIP codes are near 03781?

The closest are 03770 (2.8 mi), 05052 (4 mi), 03746 (4.4 mi), 03784 (5.4 mi) and 03766 (6 mi).

Is 03781 a PO Box ZIP code?

03781 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “03781 ZIP Code — Plainfield, New Hampshire (Sullivan County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03781

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