03231
ZIP 03231 is East Andover, New Hampshire, in Merrimack County; area code 603; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Merrimack
- Metro area
- Concord, NH
- Population
- 89
- Coordinates
- 43.4509, -71.7541
Weather right now
Asking the National Weather Service…
Where 03231 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 03231 into a pocket calculator and turn it upside down: IEZEO — not quite a word, sorry.
- ➕ As a number, 3,231 = 3 × 3 × 359. Its digits add up to 9, a total 375 other ZIP codes share.
- 💾In binary, the way a computer stores it:
110010011111 - 🏠 Its numerical neighbours: 03230 (Danbury, NH, 8 mi away) and 03233 (Elkins, NH, 9 mi away).
- 🔄 Backwards, 03231 becomes 13230, which is not a ZIP code at all.
- 👥 30 other ZIP codes are made of exactly the same digits (02133, 02331, 12033, 12303, 13032, 13203, …). The farthest-flung twin is 33102 in Miami, FL, 1,310 miles away.
- 🧭 Farther north than 85% of all ZIP codes, and farther east than 95%.
- 🎯1,401 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 03231 and you would come out at 43.45°S, 108.25°E — 896 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 25m of daylight. Shortest: 8h 57m.
- 📏 At 0.286 square miles of land, 03231 is bigger than 3% of ZIP codes — about 138 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 89This ZIP89 |
|---|---|
| Households | 58This ZIP58 |
| Housing units | 92This ZIP92 |
| Median age | 64.5This ZIP64.5New Hampshire43.3US 38.9 |
| Median home value | $604,800This ZIP$604,800New Hampshire$402,500US $332,700 |
| Bachelor's degree or higher | 75.3%This ZIP75.3% |
| Population density | 311.2 / sq miThis ZIP311.2 / sq mi |
Business and tax activity
| Business establishments | 6This ZIP6 |
|---|---|
| Employees | 32This ZIP32 |
| Annual payroll | $1,839,000This ZIP$1,839,000 |
Land area
| Land area | 0.29 sq miThis ZIP0.29 sq mi |
|---|---|
| Water area | 0.33 sq miThis ZIP0.33 sq mi |
ZIP codes near 03231
| ZIP | City | Distance |
|---|---|---|
03216 | Andover, NH | 1.8 mi |
03235 | Franklin, NH | 4.0 mi |
03268 | Salisbury, NH | 4.6 mi |
03243 | Hill, NH | 5.4 mi |
03230 | Danbury, NH | 7.7 mi |
03287 | Wilmot, NH | 8.5 mi |
03276 | Tilton, NH | 9.0 mi |
03233 | Elkins, NH | 9.1 mi |
03269 | Sanbornton, NH | 9.4 mi |
03260 | North Sutton, NH | 10.0 mi |
Find every ZIP code within 10 miles of 03231 →
Questions about this ZIP code
Where is ZIP code 03231?
03231 is in East Andover, New Hampshire, in Merrimack County, part of the Concord, NH micropolitan area. Its published point location is 43.4509, -71.7541.
What county is 03231 in?
03231 lies in Merrimack County.
What area code is 03231?
East Andover uses area code 603, from NANPA's telephone records.
What time zone is 03231 in?
03231 uses America/New_York.
How many people live in 03231?
About 89 people live in ZIP code 03231, in 58 households, at 311.2 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What ZIP codes are near 03231?
The closest are 03216 (1.8 mi), 03235 (4 mi), 03268 (4.6 mi), 03243 (5.4 mi) and 03230 (7.7 mi).
Is 03231 a PO Box ZIP code?
03231 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “03231 ZIP Code — East Andover, New Hampshire (Merrimack County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/03231
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/03231.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.