Princeton, New Jersey
Official LSAD Designation: Princeton • Census GEOID: 3460900
• Mercer County
Demographics & Population Profile
Population and demographics for Princeton.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 31,469 | — | 2025 | Census |
| Median Age | 28.5 yrs | ±1.5 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 9,300 | ±378 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).