03865
ZIP 03865 is Plaistow, New Hampshire, in Rockingham County; area code 603; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Rockingham
- Metro area
- Boston-Cambridge-Newton, MA-NH
- Population
- 7,861
- Coordinates
- 42.8456, -71.0933
Weather right now
Asking the National Weather Service…
Where 03865 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.
- 🔢 Type 03865 into a pocket calculator and turn it upside down: SgBEO — not quite a word, sorry.
- ➕ As a number, 3,865 = 5 × 773. Its digits add up to 22, a total 2,607 other ZIP codes share.
- 💾In binary, the way a computer stores it:
111100011001 - 🏠 Its numerical neighbours: 03864 (Ossipee, NH, 58 mi away) and 03866 (Rochester, NH, 32 mi away).
- 🔄 Backwards, 03865 becomes 56830, which is not a ZIP code at all.
- 👥 49 other ZIP codes are made of exactly the same digits (03586, 03856, 05836, 05863, 06385, 06538, …). The farthest-flung twin is 85360 in Wikieup, AZ, 2,335 miles away.
- 🧭 Farther north than 81% of all ZIP codes, and farther east than 96%.
- 🎯1,435 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 03865 and you would come out at 42.85°S, 108.91°E — 843 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 21m of daylight. Shortest: 9h 01m.
- 📏 At 10.6 square miles of land, 03865 is bigger than 28% of ZIP codes — room for about 8.0 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 7,861This ZIP7,861 |
|---|---|
| Households | 3,185This ZIP3,185 |
| Housing units | 3,213This ZIP3,213 |
| Median age | 40.1This ZIP40.1New Hampshire43.3US 38.9 |
| Median household income | $108,317This ZIP$108,317New Hampshire$99,031US $80,734 |
| Median home value | $404,500This ZIP$404,500New Hampshire$402,500US $332,700 |
| Median gross rent | $1,664This ZIP$1,664New Hampshire$1,491US $1,413 |
| Bachelor's degree or higher | 34.9%This ZIP34.9% |
| Mean commute | 28.6 minThis ZIP28.6 min |
| Population density | 742.2 / sq miThis ZIP742.2 / sq mi |
Business and tax activity
| Business establishments | 350This ZIP350 |
|---|---|
| Employees | 4,231This ZIP4,231 |
| Annual payroll | $205,696,000This ZIP$205,696,000 |
| Tax returns filed | 4,360This ZIP4,360 |
| Total adjusted gross income | $385,429,000This ZIP$385,429,000 |
Land area
| Land area | 10.59 sq miThis ZIP10.59 sq mi |
|---|---|
| Water area | 0.01 sq miThis ZIP0.01 sq mi |
ZIP codes near 03865
| ZIP | City | Distance |
|---|---|---|
03859 | Newton Junction, NH | 2.9 mi |
03858 | Newton, NH | 2.9 mi |
03826 | East Hampstead, NH | 3.5 mi |
03811 | Atkinson, NH | 3.8 mi |
01830 | Haverhill, MA | 4.0 mi |
01860 | Merrimac, MA | 4.1 mi |
01832 | Haverhill, MA | 4.3 mi |
03848 | Kingston, NH | 4.8 mi |
03841 | Hampstead, NH | 4.9 mi |
01831 | Haverhill, MA | 5.4 mi |
Find every ZIP code within 10 miles of 03865 →
Questions about this ZIP code
Where is ZIP code 03865?
03865 is in Plaistow, New Hampshire, in Rockingham County, part of the Boston-Cambridge-Newton, MA-NH metropolitan area. Its published point location is 42.8456, -71.0933.
What county is 03865 in?
03865 lies in Rockingham County.
What area code is 03865?
Plaistow uses area code 603, from NANPA's telephone records.
What time zone is 03865 in?
03865 uses America/New_York.
How many people live in 03865?
About 7,861 people live in ZIP code 03865, in 3,185 households, at 742.2 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 03865?
$108,317 a year, against $99,031 across New Hampshire.
What ZIP codes are near 03865?
The closest are 03859 (2.9 mi), 03858 (2.9 mi), 03826 (3.5 mi), 03811 (3.8 mi) and 01830 (4 mi).
Is 03865 a PO Box ZIP code?
03865 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “03865 ZIP Code — Plaistow, New Hampshire (Rockingham County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03865
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/03865.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.