07831
ZIP 07831 is Changewater, New Jersey, in Warren County; area code 908; Eastern time.
- Type
- Standard
- Time zone
- America/New_York
- County
- Warren
- Metro area
- Allentown-Bethlehem-Easton, PA-NJ
- Population
- 36
- Coordinates
- 40.7392, -74.9468
Weather right now
Asking the National Weather Service…
Where 07831 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 07831 into a pocket calculator and turn it upside down: IEBLO — not quite a word, sorry.
- ➕ As a number, 7,831 = 41 × 191. Its digits add up to 19, a total 2,454 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1111010010111 - 🏠 Its numerical neighbours: 07830 (Califon, NJ, 8 mi away) and 07832 (Columbia, NJ, 16 mi away).
- 🔄 Backwards, 07831 becomes 13870, which is not a ZIP code at all.
- 👥 52 other ZIP codes are made of exactly the same digits (01378, 03781, 03817, 03871, 08317, 08731, …). The farthest-flung twin is 83701 in Boise, ID, 2,104 miles away.
- 🧭 Farther north than 64% of all ZIP codes, and farther east than 88%.
- 🎯1,243 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 07831 and you would come out at 40.74°S, 105.05°E — 853 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 06m of daylight. Shortest: 9h 15m.
- 📏 At 0.122 square miles of land, 07831 is bigger than 2% of ZIP codes — about 59 football fields.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 36This ZIP36 |
|---|---|
| Households | 18This ZIP18 |
| Housing units | 18This ZIP18 |
| Bachelor's degree or higher | 0.0% |
| Population density | 295.1 / sq miThis ZIP295.1 / sq mi |
Business and tax activity
| Business establishments | 3This ZIP3 |
|---|---|
| Employees | 9This ZIP9 |
| Annual payroll | $283,000This ZIP$283,000 |
Land area
| Land area | 0.12 sq miThis ZIP0.12 sq mi |
|---|---|
| Water area | 0.00 sq mi |
ZIP codes near 07831
| ZIP | City | Distance |
|---|---|---|
08826 | Glen Gardner, NJ | 2.4 mi |
07882 | Washington, NJ | 3.5 mi |
07865 | Port Murray, NJ | 4.5 mi |
07863 | Oxford, NJ | 4.8 mi |
08827 | Hampton, NJ | 5.0 mi |
08808 | Broadway, NJ | 5.5 mi |
08802 | Asbury, NJ | 5.5 mi |
08829 | High Bridge, NJ | 5.6 mi |
08809 | Clinton, NJ | 6.5 mi |
07829 | Buttzville, NJ | 7.5 mi |
Find every ZIP code within 10 miles of 07831 →
Questions about this ZIP code
Where is ZIP code 07831?
07831 is in Changewater, New Jersey, in Warren County, part of the Allentown-Bethlehem-Easton, PA-NJ metropolitan area. Its published point location is 40.7392, -74.9468.
What county is 07831 in?
07831 lies in Warren County.
What area code is 07831?
Changewater uses area code 908, from NANPA's telephone records.
What time zone is 07831 in?
07831 uses America/New_York.
How many people live in 07831?
About 36 people live in ZIP code 07831, in 18 households, at 295.1 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 07831?
The closest are 08826 (2.4 mi), 07882 (3.5 mi), 07865 (4.5 mi), 07863 (4.8 mi) and 08827 (5 mi).
Is 07831 a PO Box ZIP code?
07831 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “07831 ZIP Code — Changewater, New Jersey (Warren County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/07831
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/07831.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.