Department profile · Mercer County

Princeton University Police

Reported as: Princeton University PoliceMunicipal police

Jurisdiction context

Civil service status not verified

We could not match this agency to the NJCSC roster with confidence. Whether the Title 4A framework applies here is not asserted either way.

See the context on non-civil-service departments.

Reflects the NJCSC Appendix A roster as of 2026-07-04. Context only, not legal advice.

In brief

Nine major discipline records appear across the 2020-2025 releases, from 2020, 2023, 2024 and 2025, including five terminations. Princeton University Police received an F on the report card, at the 96th percentile among 110 peers in the 30-59 officers group, a high-confidence grade.

Written by this site strictly from the figures on this page; every number is cited below.

Officers named in IA cases, 2025

12^{^[1]}

Distinct officers in that year's IA investigations, not total staffing

IA investigations, 2025

24^{^[1]}

Incidents, 2025

20^{^[1]}

Major discipline records

All years, 2020-2025

Staffing

As reported by the department to the FBI's Law Enforcement Employees (LEE) census, full-time personnel as of October 31 each year. This is a different measurement from the "officers named in IA cases" figure above; see the methodology.

Sworn officers, 2025

43^{^[4]}

13 years reported

43 sworn officers in 2025, up from 29 in 2013 (+48%).
Year	sworn officers
2013	29
2014	31
2015	32
2016	32
2017	33
2018	26
2019	32
2020	35
2021	33
2022	39
2023	32
2024	37
2025	43

Civilian employees, 2025

103^{^[5]}

2.4 per sworn officer

Female sworn officers, 2025

5^{^[6]}

11.6% of sworn officers

AnalysisComputed by this site from LEE reported totals; not an official statistic.

How Princeton University Police's sworn staffing compares with its real peer group (same agency type, similar size band), not an assumed bell curve.

Peer group: Municipal police, 30-59 officers (n=111)

Sworn officers: Municipal police, 30-59 officers
Range	Agencies
30–35	38
35–40	27
40–45	15
45–50	14
50–55	10
55–60	7

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Princeton University Police: 43 sworn officers: 65th percentile among Municipal police, 30-59 officers (n=111).

The match between this FBI record and this department is this site's inference, not a certified mapping. If it is wrong, we will remove it: corrections.

Officer pay and school-staff pay

No median officer salary is published for Princeton University Police. A department needs at least 10 active officers resolved to it in the NJ Treasury pension file before this site shows a median. That threshold is about the stability of the figure, not about the department. The county-level comparison is on the Mercer County pay page.

Military surplus equipment (1033 program)

No 1033 transfers recorded. No surplus-equipment transfers appear for this agency under a high-confidence name match in the Defense Logistics Agency's file as of 2026-06-30. That can mean the agency received nothing through the program, or that a recipient name in the federal file did not confidently match this department. See the methodology for how the match is made, or the statewide 1033 overview for how the program spreads across New Jersey.

Internal affairs investigations by year

counts

Internal affairs investigations reported by Princeton University Police, by year
Category	counts
2021	21
2022	18
2023	40
2024	18
2025	24

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Incidents

20 in 2025

Internal affairs incidents reported by Princeton University Police, by year
Year	counts
2021	21
2022	18
2023	28
2024	14
2025	20

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Officers on IA rows

19 in 2025

Officers listed on the officer-level internal affairs rows for Princeton University Police, by year
Year	counts
2021	not reported
2022	not reported
2023	not reported
2024	18
2025	19

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Analysis

Computed by this site from the two figures the agency reports each year. Not a misconduct rate: it describes how an agency resolved what it investigated.

share of total · 5 reported years

Share of internal affairs investigations sustained by Princeton University Police, by year
Year	share of total
2021	0
2022	61.111
2023	37.5
2024	44.444
2025	62.5

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Statewide, 19.5 percent of investigations reported a sustained complaint in 2025. How dispositions break down statewide.

Complaint mix, 2025

Most serious allegation per investigation, as categorized by the reporting agency. Officer-level rows list 19 officers involved.

Most serious allegation

Most serious allegations reported by Princeton University Police, 2025
Other Departmental Rule Violation	18
Demeanor	4
Differential Treatment	2

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AdministrativeConduct / dutyRights / integrityViolence / criminal

Statewide category pages: Other Departmental Rule Violation · Demeanor · Differential Treatment

Internal disposition

Internal dispositions reported by Princeton University Police, 2025
Sustained	15
Exonerated	6
Unfounded	2
Not Sustained	1

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Allegations by year, 2021 to 2025

AnalysisRanked and folded by this site. The counts inside each panel are as reported.

not provided

41 of 121

not provided allegations reported by Princeton University Police, by year
Year	counts
2021	0
2022	3
2023	29
2024	9
2025	0

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Other Departmental Rule Violation

40 of 121

Other Departmental Rule Violation allegations reported by Princeton University Police, by year
Year	counts
2021	11
2022	3
2023	0
2024	8
2025	18

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Demeanor

24 of 121

Demeanor allegations reported by Princeton University Police, by year
Year	counts
2021	6
2022	4
2023	10
2024	0
2025	4

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Differential Treatment

8 of 121

Differential Treatment allegations reported by Princeton University Police, by year
Year	counts
2021	3
2022	1
2023	1
2024	1
2025	2

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Other (5 categories)

8 of 121

Other (5 categories) allegations reported by Princeton University Police, by year
Year	counts
2021	1
2022	7
2023	0
2024	0
2025	0

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Against peers, 2025

How this grade was built →

Internal affairs investigations per 100 IA-investigated officers, 2025 (investigations per 100 IA-investigated officers)
Princeton University Police	200.0
County median, municipal police (13)	133.3
NJ median, municipal police (445)	125.9

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Investigations per 100 officers named in that year's IA investigations (the Attorney General's own "Number of Officers" field, a distinct-officer count drawn from the IA case data itself, not a department headcount). 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.

AnalysisA second, independent rate using FBI-reported staffing instead.

24 investigations reported for 2025^[1] ÷ 43 sworn officers the department reported to the FBI for 2025^[18] = 55.8 per 100 FBI-reported sworn officers. This is a genuinely different denominator from the rate above, not a correction of it; the two should not be added or averaged together. See the methodology for why these two officer counts diverge.

Report card

Grade F: Highest fifth of peers

On reported IA volume and discipline severity; see methodology

Combined standing: 96th percentile of 110 peers
Confidence: High confidence

Where this agency falls among its peers

The actual spread of discipline severity across Princeton University Police's real peer group, not an assumed bell curve. If the group is skewed, it is shown skewed.

Peer group: Municipal police, 30-59 officers (n=110)

Discipline severity: Municipal police, 30-59 officers
Range	Agencies
0–50	73
50–100	25
100–150	4
150–200	6
200–250	1
250–300	1

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Princeton University Police: 179.487 severity-weighted discipline per 100 IA-investigated officers: 98th percentile among Municipal police, 30-59 officers (n=110).

How the grade is built

Three components, each a percentile within the peer group. The combined standing is their weighted mean, re-ranked among peers; the grade is the fifth of the peer group it lands in.

IA volumeweight 40%

92nd percentileof 110 peers

157.4 investigations per 100 officers (multi-year mean)

Internal affairs investigations per 100 reported officers, averaged over the years where the agency reported both figures.

Discipline severityweight 40%

98th percentileof 110 peers

179.5 severity-weighted discipline per 100 officers, 2020-2025

Major discipline records weighted by sanction (termination 4, demotion 3, suspension 2, other 1) per 100 officers.

Allegation severityweight 20%

6th percentileof 110 peers

1.65 mean severity tier (1 low - 4 critical)

Mean severity tier of IA allegations across 2021-2025, using the published tier map; unknown values excluded.

What this grade can and can't tell you

The underlying data is self-reported by agencies, one yearly snapshot at a time.
Allegations are not findings; many complaints end unfounded, exonerated, or not sustained.
There is no arrest or call-volume denominator in this data, so nothing here is a per-capita misconduct rate. A genuinely independent staffing-based rate, sourced from the FBI rather than this grade's own data, appears above when available. It is a different measurement, not a more accurate version of the grade.
A higher internal affairs volume is ambiguous: it can indicate more misconduct, or a more robust oversight and reporting culture. The grade weighs it anyway, because volume is what the record offers; that choice is published, not hidden.
The grade is one lens. The records it reads are on this page above.

Where this agency ranks

AnalysisRankings compare agencies of the same type only, on figures as reported. A high rank is reported volume, not a verdict.^[19] How each metric is defined.

This agency's rank on each metric, among agencies of the same type
Metric	Value	Rank
IA per 100 investigated officers2025	200.0	19th of 445 municipal police
IA investigations2025	24	98th of 445 municipal police
IA incidents2025	20	89th of 445 municipal police
Major discipline2020-2025	9	27th of 282 municipal police
Terminations2020-2025	5	4th of 111 municipal police

Major discipline records

1 major discipline records in 2025, holding roughly steady.
Year	major discipline records
2020	1
2021	0
2022	0
2023	5
2024	2
2025	1

1 major discipline records in 2025, holding roughly steady.

Major discipline records reported by Princeton University Police, 2020-2025
Year	Officer	Rank	Sanction as reported	Src
2025	James Bowe	SGT	Suspended 10 days	^[20]
2024	Ali Ali	Officer	Suspended 7 days	^[21]
2024	Luke Miller	Sergeant	Terminated	^[22]
2023	Luke Miller	Sergeant	Suspended 10 days	^[23]
2023	Paul Krzewinski	Officer	Suspended 7 days	^[24]
2023	Paul Krzewinski	Officer	Terminated	^[25]
2023	Paul Krzewinski	Officer	Terminated	^[26]
2023	Brandon Delaney	Officer	Terminated	^[27]
2020	Stephen Solovey	Sergeant	Terminated	^[28]

Every name links to the officer's record page with the agency's full synopsis and citation.

Public records requests

No records-request history is shown for this department. OPRAmachine, an independent site that files and publishes Open Public Records Act requests, has no public body that confidently matches this department, so this site does not assert one. That does not mean nobody has requested records from it. (Checked against a snapshot of OPRAmachine taken 12 July 2026.) See the methodology for how the match is made.

Questions and answers

What is a summary of Princeton University Police's internal affairs and discipline record?

Princeton University Police, classified in the data as municipal police and based in Mercer County, named 12 officers in internal affairs cases in 2025 and reported 24 investigations. The rate of 200 per 100 officers ran well above the Mercer County median of 133.3 and the 125.9 municipal median. A rate that high can mean more misconduct or a force that documents a larger share of the complaints it receives. Of the 24 investigations detailed for 2025, 15 reported sustained complaints. Other Departmental Rule Violation was the leading allegation category, followed by Demeanor and Differential Treatment. Nine major discipline records appear across the 2020-2025 releases, from 2020, 2023, 2024 and 2025, including five terminations. Princeton University Police received an F on the report card, at the 96th percentile among 110 peers in the 30-59 officers group, a high-confidence grade.

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. 12 distinct officers were named in that year's IA investigations.

How many major discipline records does Princeton University Police have?

Princeton University Police has 9 major discipline records in the Attorney General's 2020-2025 releases, of which 5 were terminations. These are final, adjudicated actions, not allegations.

How many officers does Princeton University Police have?

Princeton University Police reported 43 full-time sworn officers to the FBI's Law Enforcement Employees census for 2025, 11.6% of them female. This is a different measurement from the "officers named in IA cases" figure elsewhere on this page, which counts distinct officers in that year's internal affairs investigations, not total staffing.

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 Officers, 2024-2025. New Jersey Office of the Attorney General. Officer counts summed across every Princeton University Police row. Snapshot retrieved 2026-06-09. ↩
[3]New Jersey county boundaries. New Jersey Office of Information Technology, Office of GIS (NJOGIS). NJ_Counties_3857 (FeatureServer layer 0), https://services2.arcgis.com/XVOqAjTOJ5P6ngMu/arcgis/rest/services/NJ_Counties_3857/FeatureServer/0. 2020 boundary delineation. Retrieved 2026-07-27. Boundaries are generalized for display. This data set is not a survey document and must not be used as such. The polygons do not represent legal boundaries.
[4]FBI Law Enforcement Employees (LEE), New Jersey subset. Federal Bureau of Investigation. Row 8385. Derived from the public Law Enforcement Employees (LEE) / Police Employee Data dataset (1960-2025), https://cde.ucr.cjis.gov/. ↩
[5]FBI Law Enforcement Employees (LEE), New Jersey subset. Federal Bureau of Investigation. Row 8385. Derived from the public Law Enforcement Employees (LEE) / Police Employee Data dataset (1960-2025), https://cde.ucr.cjis.gov/. ↩
[6]FBI Law Enforcement Employees (LEE), New Jersey subset. Federal Bureau of Investigation. Row 8385. Derived from the public Law Enforcement Employees (LEE) / Police Employee Data dataset (1960-2025), https://cde.ucr.cjis.gov/. ↩
[7]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 265. Snapshot retrieved 2026-06-09. ↩
[8]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1283. Snapshot retrieved 2026-06-09. ↩
[9]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1786. Snapshot retrieved 2026-06-09. ↩
[10]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 768. Snapshot retrieved 2026-06-09. ↩
[11]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 2298. Snapshot retrieved 2026-06-09. ↩
[12]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. ↩
[13]New Jersey Internal Affairs Data Download, 2021-2023. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1. Snapshot retrieved 2026-06-09. Aggregated from every Princeton University Police row for 2021. ↩
[14]New Jersey Internal Affairs Data Download, 2021-2023. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1. Snapshot retrieved 2026-06-09. Aggregated from every Princeton University Police row for 2022. ↩
[15]New Jersey Internal Affairs Data Download, 2021-2023. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1. Snapshot retrieved 2026-06-09. Aggregated from every Princeton University Police row for 2023. ↩
[16]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 2024. ↩
[17]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. ↩
[18]FBI Law Enforcement Employees (LEE), New Jersey subset. Federal Bureau of Investigation. Row 8385. Derived from the public Law Enforcement Employees (LEE) / Police Employee Data dataset (1960-2025), https://cde.ucr.cjis.gov/. ↩
[19]Ranks computed by this site over the Attorney General internal affairs agency totals and major discipline releases, within agency type. Each ranking page lists every agency and its source rows. ↩
[20]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 421. Snapshot retrieved 2026-07-03. ↩
[21]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 1150. Snapshot retrieved 2026-07-03. ↩
[22]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 1151. Snapshot retrieved 2026-07-03. ↩
[23]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 1755. Snapshot retrieved 2026-07-03. ↩
[24]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 1756. Snapshot retrieved 2026-07-03. ↩
[25]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 1757. Snapshot retrieved 2026-07-03. ↩
[26]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 1758. Snapshot retrieved 2026-07-03. ↩
[27]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 1759. Snapshot retrieved 2026-07-03. ↩
[28]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 2877. Snapshot retrieved 2026-07-03. ↩