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zipcodes.pro — ZIP/03851

03851

ZIP 03851 is Milton, New Hampshire, in Strafford County; area code 603; Eastern time.

Type
Standard
Time zone
America/New_York
County
Strafford
Population
4,333
Coordinates
43.4373, -71.0253
☼ Live from 03851 — Milton, NH

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Where 03851 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 03851
  • 🔢 Type 03851 into a pocket calculator and turn it upside down: ISBEO — not quite a word, sorry.
  • ➕ 03851 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 17, a total 2,133 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 111100001011
  • 🏠 Its numerical neighbours: 03850 (Melvin Village, NH, 23 mi away) and 03852 (Milton Mills, NH, 4 mi away).
  • 🔄 Backwards, 03851 becomes 15830, which is not a ZIP code at all.
  • 👥 55 other ZIP codes are made of exactly the same digits (01538, 01583, 01835, 01853, 03581, 03815, …). The farthest-flung twin is 85130 in Casa Grande, AZ, 2,304 miles away.
  • 🧭 Farther north than 85% of all ZIP codes, and farther east than 96%.
  • 🎯1,438 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 03851 and you would come out at 43.44°S, 108.97°E — 878 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 15h 25m of daylight. Shortest: 8h 57m.
  • 📏 At 26.3 square miles of land, 03851 is bigger than 43% of ZIP codes — room for about 20 Central Parks.
🌙 The sky over 03851 today
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🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population4,333This ZIP4,333
Households1,625This ZIP1,625
Housing units1,918This ZIP1,918
Median age45.3This ZIP45.3New Hampshire43.3US 38.9
Median household income$93,412This ZIP$93,412New Hampshire$99,031US $80,734
Median home value$314,300This ZIP$314,300New Hampshire$402,500US $332,700
Median gross rent$1,587This ZIP$1,587New Hampshire$1,491US $1,413
Bachelor's degree or higher20.9%This ZIP20.9%
Mean commute32.6 minThis ZIP32.6 min
Population density164.7 / sq miThis ZIP164.7 / sq mi

Business and tax activity

Business establishments47This ZIP47
Employees339This ZIP339
Annual payroll$18,448,000This ZIP$18,448,000
Tax returns filed2,140This ZIP2,140
Total adjusted gross income$160,674,000This ZIP$160,674,000

Land area

Land area26.31 sq miThis ZIP26.31 sq mi
Water area0.61 sq miThis ZIP0.61 sq mi

Other place names in 03851

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

ZIP codes near 03851

ZIPCityDistance
03887 Union, NH 3.9 mi
03852 Milton Mills, NH 4.4 mi
03835 Farmington, NH 5.2 mi
04027 Lebanon, ME 6.2 mi
03855 New Durham, NH 6.6 mi
04001 Acton, ME 8.1 mi
03868 Rochester, NH 8.9 mi
03809 Alton, NH 9.0 mi
03872 Sanbornville, NH 9.3 mi
03866 Rochester, NH 9.5 mi

Find every ZIP code within 10 miles of 03851 →

Questions about this ZIP code

Where is ZIP code 03851?

03851 is in Milton, New Hampshire, in Strafford County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 43.4373, -71.0253.

What county is 03851 in?

03851 lies in Strafford County.

What area code is 03851?

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

What time zone is 03851 in?

03851 uses America/New_York.

How many people live in 03851?

About 4,333 people live in ZIP code 03851, in 1,625 households, at 164.7 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 03851?

$93,412 a year, against $99,031 across New Hampshire.

What ZIP codes are near 03851?

The closest are 03887 (3.9 mi), 03852 (4.4 mi), 03835 (5.2 mi), 04027 (6.2 mi) and 03855 (6.6 mi).

Is 03851 a PO Box ZIP code?

03851 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “03851 ZIP Code — Milton, New Hampshire (Strafford County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03851

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