Department profile · Mercer County
Princeton University Police
Reported as: Princeton University PoliceMunicipal police
Jurisdiction context
Not a civil service jurisdiction
This department is not among the NJCSC Appendix A jurisdictions, so major discipline here follows a different statutory track (generally N.J.S.A. 40A:14), with appeals that usually go to the Superior Court rather than the Civil Service Commission.
See the context on non-civil-service departments.
Reflects the NJCSC Appendix A roster as of 2026-07-04. Context only, not legal advice.
Sworn officers, 2025
12[1]
IA investigations, 2025
24[1]
Incidents, 2025
20[1]
Major discipline records
0
All years, 2020-2025
Internal affairs investigations by year
| 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| 21 | 18 | 40 | 18 | 24 |
Complaint mix, 2025
Most serious allegation per investigation, as categorized by the reporting agency. Allegations are not findings: of 24 investigations, 15 reported one or more sustained complaints. Officer-level rows list 19 officers involved.[7]
Most serious allegation
| Other Departmental Rule Violation | 18 |
|---|---|
| Demeanor | 4 |
| Differential Treatment | 2 |
Internal disposition
| Sustained | 15 |
|---|---|
| Exonerated | 6 |
| Unfounded | 2 |
| Not Sustained | 1 |
Against peers, 2025
| Princeton University Police | 200.0 |
|---|---|
| County median, municipal police (13) | 133.3 |
| NJ median, municipal police (447) | 125.6 |
Investigations per 100 sworn officers, using the officer counts each agency reported for 2025. A higher number is ambiguous on its own: it can reflect more misconduct, or a stronger internal reporting culture. Medians are computed within the same agency type only.
Major discipline records
No major discipline records appear for this agency in the 2020-2025 releases. Absence of records is not a finding; see the methodology for what this data does and does not cover.
Questions and answers
- How many internal affairs investigations did Princeton University Police report in 2025?
- Princeton University Police reported 24 internal affairs investigations in 2025, according to New Jersey Attorney General data. It reported 12 sworn officers that year.
- How many major discipline records does Princeton University Police have?
- No major discipline records appear for Princeton University Police in the Attorney General's 2020-2025 releases. Absence of records is not a finding; discipline is listed only after all appeals conclude.
Sources
- [1]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 2298. Snapshot retrieved 2026-06-09. ↩
- [2]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 265. Snapshot retrieved 2026-06-09. ↩
- [3]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1283. Snapshot retrieved 2026-06-09. ↩
- [4]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1786. Snapshot retrieved 2026-06-09. ↩
- [5]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 768. Snapshot retrieved 2026-06-09. ↩
- [6]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 2298. Snapshot retrieved 2026-06-09. ↩
- [7]New Jersey Internal Affairs Investigations, 2024-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1. Snapshot retrieved 2026-06-09. Aggregated from every Princeton University Police row for 2025; row 1 is the header. ↩