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zipcodes.pro — ZIP/03873

03873

ZIP 03873 is Sandown, New Hampshire, in Rockingham County; area code 603; Eastern time.

Type
Standard
Time zone
America/New_York
County
Rockingham
Population
6,628
Coordinates
42.9340, -71.1836
☼ Live from 03873 — Sandown, NH

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Where 03873 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 03873
  • 🔢 Type 03873 into a pocket calculator and turn it upside down: ELBEO — not quite a word, sorry.
  • ➕ As a number, 3,873 = 3 × 1291. Its digits add up to 21, a total 2,594 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111100100001
  • 🏠 Its numerical neighbours: 03872 (Sanbornville, NH, 45 mi away) and 03874 (Seabrook, NH, 17 mi away).
  • 🔄 Backwards, 03873 becomes 37830 — and that is a real ZIP code: Oak Ridge, TN, 847 miles away.
  • 👥 24 other ZIP codes are made of exactly the same digits (03837, 07833, 08733, 30378, 30738, 33708, …). The farthest-flung twin is 83703 in Boise, ID, 2,238 miles away.
  • 🧭 Farther north than 82% of all ZIP codes, and farther east than 96%.
  • 🎯1,430 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 03873 and you would come out at 42.93°S, 108.82°E — 851 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 21m of daylight. Shortest: 9h 00m.
  • 📏 At 13.9 square miles of land, 03873 is bigger than 32% of ZIP codes — room for about 11 Central Parks.
🌙 The sky over 03873 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population6,628This ZIP6,628
Households2,348This ZIP2,348
Housing units2,398This ZIP2,398
Median age40.8This ZIP40.8New Hampshire43.3US 38.9
Median household income$135,040This ZIP$135,040New Hampshire$99,031US $80,734
Median home value$483,400This ZIP$483,400New Hampshire$402,500US $332,700
Median gross rent$1,893This ZIP$1,893New Hampshire$1,491US $1,413
Bachelor's degree or higher34.1%This ZIP34.1%
Mean commute33.4 minThis ZIP33.4 min
Population density475.6 / sq miThis ZIP475.6 / sq mi

Business and tax activity

Business establishments72This ZIP72
Employees310This ZIP310
Annual payroll$13,650,000This ZIP$13,650,000
Tax returns filed3,480This ZIP3,480
Total adjusted gross income$336,064,000This ZIP$336,064,000

Land area

Land area13.94 sq miThis ZIP13.94 sq mi
Water area0.49 sq miThis ZIP0.49 sq mi

ZIP codes near 03873

ZIPCityDistance
03819 Danville, NH 2.7 mi
03841 Hampstead, NH 3.8 mi
03826 East Hampstead, NH 4.2 mi
03036 Chester, NH 5.0 mi
03038 Derry, NH 5.5 mi
03044 Fremont, NH 5.6 mi
03848 Kingston, NH 5.7 mi
03041 East Derry, NH 6.1 mi
03811 Atkinson, NH 6.6 mi
03077 Raymond, NH 6.9 mi

Find every ZIP code within 10 miles of 03873 →

Questions about this ZIP code

Where is ZIP code 03873?

03873 is in Sandown, New Hampshire, in Rockingham County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.9340, -71.1836.

What county is 03873 in?

03873 lies in Rockingham County.

What area code is 03873?

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

What time zone is 03873 in?

03873 uses America/New_York.

How many people live in 03873?

About 6,628 people live in ZIP code 03873, in 2,348 households, at 475.6 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 03873?

$135,040 a year, against $99,031 across New Hampshire.

What ZIP codes are near 03873?

The closest are 03819 (2.7 mi), 03841 (3.8 mi), 03826 (4.2 mi), 03036 (5 mi) and 03038 (5.5 mi).

Is 03873 a PO Box ZIP code?

03873 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “03873 ZIP Code — Sandown, New Hampshire (Rockingham County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03873

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