Find the last 4 digits (ZIP+4) for an address in 08540

ZIP 08540, Princeton, NJ is filled in. Just type the street address.

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ZIP Code 08540 – Princeton, NJ

Princeton, New Jersey · Mercer County · Eastern time

ZIP code08540
CityPrinceton
StateNew Jersey
CountyMercer CountySomerset CountyMiddlesex County
Population50,388
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area51.72 sq mi
Center (lat, long)40.3647, -74.6563

Area codes in this area

609640

These are the area codes that most often serve ZIP 08540 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

08542 Princeton · 0.7 mi08541 Princeton · 1.1 mi08544 Princeton · 1.3 mi08528 Kingston · 2.5 mi08553 Rocky Hill · 2.6 mi08504 Blawenburg · 3.8 mi08558 Skillman · 4.2 mi08536 Plainsboro · 4.3 mi

About ZIP 08540

ZIP code 08540 is assigned to Princeton, New Jersey. It crosses 3 counties; most of its land is in Mercer County. Its Census area covers about 51.72 square miles of land. The closest neighboring ZIP is 08542 (Princeton), about 0.7 miles away.

Every address in 08540 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources