ZIP code 08540
Where is ZIP code 08540?
Princeton, New Jersey
Mercer County · Standard ZIP code
ZIP code 08540 belongs to Princeton, New Jersey in Mercer County. 08540 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Eastern Time zone and uses area codes 609, 640, 732, 848 and 908. About 50,388 people live in the 08540 area, where the median household income is $176,983. The closest ZIP codes are 08542 (Princeton, 1.3 mi southwest), 08544 (Princeton, 1.4 mi southwest) and 08541 (Princeton, 1.6 mi southwest).
| ZIP code | 08540 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Princeton |
| State | New Jersey (NJ) |
| County | Mercer County |
| Time zone | Eastern Time · now |
| Area codes | 609, 640, 732, 848, 908 |
| Coordinates | 40.3666, -74.6408 map |
| 3-digit prefix | 085 |
Population and income in 08540
| Population | 50,388 · higher than 96% of New Jersey ZIP codes |
|---|---|
| People per square mile | 974 · lower than 65% of New Jersey ZIP codes |
| Median age | 40.6 years · lower than 62% of New Jersey ZIP codes |
| Men / women | 50% / 50% |
| Median household income | $176,983 · higher than 87% of New Jersey ZIP codes |
| Income per person | $89,601 |
| Below the poverty line | 8.2% |
| Bachelor’s degree or higher | 83% of adults 25+ |
| Median home value | $767,900 · higher than 85% of New Jersey ZIP codes |
| Median rent | $2,218 a month |
| Housing units | 19,622 |
| Households | 18,609 (2.55 people on average) |
| Owners / renters | 64% / 36% |
| Land area | 51.72 sq mi (plus 1.03 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 08540. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 08540
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 08542 | Princeton, NJ | 1.3 mi SW | Standard |
| 08544 | Princeton, NJ | 1.4 mi SW | Unique |
| 08541 | Princeton, NJ | 1.6 mi SW | Unique |
| 08528 | Kingston, NJ | 2 mi NE | Standard |
| 08553 | Rocky Hill, NJ | 2.4 mi N | Standard |
| 08504 | Blawenburg, NJ | 4.3 mi NW | PO Box only |
| 08536 | Plainsboro, NJ | 4.5 mi SE | Standard |
| 08558 | Skillman, NJ | 4.5 mi NW | Standard |
| 08852 | Monmouth Junction, NJ | 4.7 mi E | Standard |
| 08502 | Belle Mead, NJ | 5.7 mi N | Standard |
| 08824 | Kendall Park, NJ | 6 mi NE | Standard |
| 08550 | Princeton Junction, NJ | 6.9 mi S | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 08540 or measure the distance to another ZIP code.
How to address mail to 08540
123 MAIN ST
PRINCETON NJ 08540
Put the city, the two-letter state code and the ZIP code on the last line. Avoid Princeton Township and Princeton Twp: USPS doesn’t recognize them as the city for this ZIP code. Adding the 4-digit ZIP+4 code (08540-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Princeton, NJ
All Princeton ZIP codes with population and income →
Questions
- What city is ZIP code 08540?
- 08540 is a Princeton, New Jersey ZIP code.
- What county is 08540 in?
- ZIP code 08540 is in Mercer County, New Jersey.
- What time zone is ZIP code 08540 in?
- 08540 is in the Eastern Time zone (America/New_York).
- What area code is 08540?
- Phone numbers in ZIP code 08540 use area codes 609, 640, 732, 848 and 908.
- What is the population of ZIP code 08540?
- About 50,388 people live in ZIP code 08540, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 08540?
- The median household income in 08540 is $176,983 a year, higher than 87% of New Jersey ZIP codes.
- What ZIP codes are near 08540?
- The nearest ZIP codes to 08540 are 08542 (Princeton, 1.3 miles), 08544 (Princeton, 1.4 miles), 08541 (Princeton, 1.6 miles) and 08528 (Kingston, 2 miles).