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Where 08691 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 08691 into a pocket calculator and turn it upside down: IGgBO — not quite a word, sorry.
- ➕ As a number, 8,691 = 3 × 2897. Its digits add up to 24, a total 2,425 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10000111110011 - 🏠 Its numerical neighbours: 08690 (Trenton, NJ, 3 mi away) and 08695 (Trenton, NJ, 8 mi away).
- 🔄 Backwards, 08691 becomes 19680, which is not a ZIP code at all.
- 👥 35 other ZIP codes are made of exactly the same digits (08619, 09186, 09618, 09681, 09816, 09861, …). The farthest-flung twin is 09681 in APO AE, a military post office, 6,631 miles away.
- 🧭 Farther north than 58% of all ZIP codes, and farther east than 89%.
- 🎯1,265 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 08691 and you would come out at 40.21°S, 105.40°E — 815 miles from Perth, Australia, the nearest big city to that spot.
- ☀Longest day of the year: 15h 02m of daylight. Shortest: 9h 18m.
- 📏 At 24.2 square miles of land, 08691 is bigger than 41% of ZIP codes — room for about 18 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 16,607This ZIP16,607 |
|---|---|
| Households | 6,859This ZIP6,859 |
| Housing units | 7,139This ZIP7,139 |
| Median age | 44.6This ZIP44.6New Jersey40.1US 38.9 |
| Median household income | $132,520This ZIP$132,520New Jersey$103,556US $80,734 |
| Median home value | $552,000This ZIP$552,000New Jersey$454,400US $332,700 |
| Median gross rent | $1,954This ZIP$1,954New Jersey$1,720US $1,413 |
| Bachelor's degree or higher | 65.7%This ZIP65.7% |
| Mean commute | 36.0 minThis ZIP36.0 min |
| Population density | 685.3 / sq miThis ZIP685.3 / sq mi |
Business and tax activity
| Business establishments | 604This ZIP604 |
|---|---|
| Employees | 21,729This ZIP21,729 |
| Annual payroll | $1,232,247,000This ZIP$1,232,247,000 |
| Tax returns filed | 8,330This ZIP8,330 |
| Total adjusted gross income | $1,352,770,000This ZIP$1,352,770,000 |
Land area
| Land area | 24.23 sq miThis ZIP24.23 sq mi |
|---|---|
| Water area | 0.18 sq miThis ZIP0.18 sq mi |
Counties 08691 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Mercer County | 88.7% |
| Monmouth County | 11.3% |
Other place names in 08691
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 08691
| ZIP | City | Distance |
|---|---|---|
08561 | Windsor, NJ | 2.9 mi |
08690 | Trenton, NJ | 3.3 mi |
08620 | Trenton, NJ | 3.7 mi |
08501 | Allentown, NJ | 3.9 mi |
08520 | Hightstown, NJ | 4.7 mi |
08550 | Princeton Junction, NJ | 5.1 mi |
08619 | Trenton, NJ | 5.6 mi |
08610 | Trenton, NJ | 6.2 mi |
08629 | Trenton, NJ | 6.9 mi |
08555 | Roosevelt, NJ | 7.0 mi |
Find every ZIP code within 10 miles of 08691 →
Questions about this ZIP code
Where is ZIP code 08691?
08691 is in Trenton, New Jersey, in Mercer County, part of the Trenton-Princeton, NJ metropolitan area. Its published point location is 40.2083, -74.6009.
What county is 08691 in?
08691 spans 2 counties: Mercer County and Monmouth County. Most of it falls in Mercer County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 08691?
Trenton uses area codes 609 and 640, from NANPA's telephone records.
What time zone is 08691 in?
08691 uses America/New_York.
How many people live in 08691?
About 16,607 people live in ZIP code 08691, in 6,859 households, at 685.3 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 08691?
$132,520 a year, against $103,556 across New Jersey.
What ZIP codes are near 08691?
The closest are 08561 (2.9 mi), 08690 (3.3 mi), 08620 (3.7 mi), 08501 (3.9 mi) and 08520 (4.7 mi).
Is 08691 a PO Box ZIP code?
08691 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “08691 ZIP Code — Trenton, New Jersey (Mercer County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/08691
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/08691.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.