Princeton, New Jersey
Official LSAD Designation: Princeton • Census GEOID: 3460900
• Mercer County
Princeton is an incorporated place in Mercer County, New Jersey. According to official records from the Census (2025), Princeton had an estimated population of 31,469 residents. Official Census Bureau geographic records classify this community under LSAD designation Princeton (GEOID 3460900).
Local Government Administration U.S. Census Bureau GMAF
Municipality Of Princeton
Municipal
Official Title:
Mayor
Address:
400 WITHERSPOON STREET, PRINCETON NJ 08540
County Of Mercer
County
Official Title:
Sr Budget Examiner
Address:
PO BOX 8068, TRENTON NJ 08650-0068
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 31,469 | 2025 |
| Median Household Income | $192,079 | 2020-2024 |
| Median Home Value | $1,050,600 | 2020-2024 |
| Land Area | 17.95 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).