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Ranking · 2025

Counties, compared

New Jersey average: 160.3 IA investigations per 100 officers, summed across every county. Counties above this line report more per officer.

Internal affairs investigations per 1,000 residents, 2025

Per 1,000 residents · 21 counties

LowerHigher

Counties are grouped by rank into 6 equal-sized groups, compared against the other 20 shown here only. Shading is rate per 1,000 residents, not a grade or a judgment. Boundary values are printed above the ramp.

County outlines are generalized for display and are not legal boundaries. Population is from the 2020 Census. Internal affairs figures are more recent, so a per-resident rate mixes vintages.

Internal affairs investigations per 1,000 residents, 2025, by New Jersey countyInternal affairs investigations per 1,000 residents, 2025, for all 21 New Jersey counties. Highest: Camden, 4.59. Lowest: Ocean, 0.55.ATLBERBURCAMCAPCUMESSGLOHUNMERMIDMONMOROCEPASSALSOMSUSUNIWARHUD
Internal affairs investigations per 1,000 residents, 2025, by New Jersey county
Internal affairs investigations per 1,000 residents, 2025, by New Jersey county
Countyrate per 1,000 residents
Atlantic1.88
Bergen0.81
Burlington1.08
Camden4.59
Cape May1.80
Cumberland1.92
Essex3.42
Gloucester0.90
Hudson1.66
Hunterdon0.85
Mercer0.93
Middlesex0.72
Monmouth1.03
Morris0.87
Ocean0.55
Passaic1.27
Salem1.02
Somerset0.89
Sussex1.07
Union1.29
Warren0.89

Counties ranked

  1. 1Camden4.59 (group 6 of 6, lowest to highest)
  2. 2Essex3.42 (group 6 of 6, lowest to highest)
  3. 3Cumberland1.92 (group 6 of 6, lowest to highest)
  4. 4Atlantic1.88 (group 6 of 6, lowest to highest)
  5. 5Cape May1.80 (group 5 of 6, lowest to highest)
  6. 6Hudson1.66 (group 5 of 6, lowest to highest)
  7. 7Union1.29 (group 5 of 6, lowest to highest)
  8. 8Passaic1.27 (group 4 of 6, lowest to highest)
  9. 9Burlington1.08 (group 4 of 6, lowest to highest)
  10. 10Sussex1.07 (group 4 of 6, lowest to highest)
  11. 11Monmouth1.03 (group 3 of 6, lowest to highest)
  12. 12Salem1.02 (group 3 of 6, lowest to highest)
  13. 13Mercer0.93 (group 3 of 6, lowest to highest)
  14. 14Gloucester0.90 (group 3 of 6, lowest to highest)
  15. 15Warren0.89 (group 2 of 6, lowest to highest)
  16. 16Somerset0.89 (group 2 of 6, lowest to highest)
  17. 17Morris0.87 (group 2 of 6, lowest to highest)
  18. 18Hunterdon0.85 (group 1 of 6, lowest to highest)
  19. 19Bergen0.81 (group 1 of 6, lowest to highest)
  20. 20Middlesex0.72 (group 1 of 6, lowest to highest)
  21. 21Ocean0.55 (group 1 of 6, lowest to highest)

Per 1,000 residents, 2025.

Not on this map: the State Police, the Department of Corrections, Transit Police, and other state-level agencies. They operate across county lines and the Attorney General reports them outside the county system, so their activity appears in no county here. They are in the rankings.

County investigations for the latest year divided by 2020 Census population, times 1,000. State agencies operate in every county and are reported outside the county system, so none of their investigations appear in any county.

Scroll sideways for more columns →

New Jersey counties compared on 2025 internal affairs totals and 2020-2025 discipline
CountyAgenciescount, 2025Investigationscount, 2025Officers named in IAcount, 2025IA per 100 officers namedrate, computed hereMajor disciplinecount, 2020-2025Terminationscount, 2020-2025No IA reportedagencies, 2025
Essex262,9531,593185.4 (93rd percentile among the 21 counties for IA investigations per 100 officers)252 (93rd percentile among the 21 counties for major discipline records)39 (98th percentile among the 21 counties for terminations)0
Camden382,404977246.1 (98th percentile among the 21 counties for IA investigations per 100 officers)455 (98th percentile among the 21 counties for major discipline records)24 (81st percentile among the 21 counties for terminations)0
Hudson161,203831144.8 (50th percentile among the 21 counties for IA investigations per 100 officers)244 (88th percentile among the 21 counties for major discipline records)27 (88th percentile among the 21 counties for terminations)0
Bergen62777598129.9 (21st percentile among the 21 counties for IA investigations per 100 officers)119 (74th percentile among the 21 counties for major discipline records)10 (45th percentile among the 21 counties for terminations)0
Union25743510145.7 (55th percentile among the 21 counties for IA investigations per 100 officers)96 (60th percentile among the 21 counties for major discipline records)9 (36th percentile among the 21 counties for terminations)0
Passaic19667457146.0 (60th percentile among the 21 counties for IA investigations per 100 officers)77 (55th percentile among the 21 counties for major discipline records)16 (64th percentile among the 21 counties for terminations)0
Monmouth44664478138.9 (40th percentile among the 21 counties for IA investigations per 100 officers)131 (79th percentile among the 21 counties for major discipline records)32 (93rd percentile among the 21 counties for terminations)0
Middlesex28622481129.3 (17th percentile among the 21 counties for IA investigations per 100 officers)117 (69th percentile among the 21 counties for major discipline records)24 (81st percentile among the 21 counties for terminations)0
Atlantic17517344150.3 (74th percentile among the 21 counties for IA investigations per 100 officers)207 (83rd percentile among the 21 counties for major discipline records)19 (71st percentile among the 21 counties for terminations)0
Burlington35497358138.8 (36th percentile among the 21 counties for IA investigations per 100 officers)104 (64th percentile among the 21 counties for major discipline records)15 (60th percentile among the 21 counties for terminations)0
Morris38445338131.7 (26th percentile among the 21 counties for IA investigations per 100 officers)52 (40th percentile among the 21 counties for major discipline records)11 (52nd percentile among the 21 counties for terminations)0
Mercer15361245147.3 (69th percentile among the 21 counties for IA investigations per 100 officers)76 (50th percentile among the 21 counties for major discipline records)19 (71st percentile among the 21 counties for terminations)0
Ocean32350274127.7 (12th percentile among the 21 counties for IA investigations per 100 officers)49 (31st percentile among the 21 counties for major discipline records)8 (26th percentile among the 21 counties for terminations)0
Somerset21306224136.6 (31st percentile among the 21 counties for IA investigations per 100 officers)47 (26th percentile among the 21 counties for major discipline records)7 (21st percentile among the 21 counties for terminations)0
Cumberland6296188157.4 (79th percentile among the 21 counties for IA investigations per 100 officers)36 (21st percentile among the 21 counties for major discipline records)9 (36th percentile among the 21 counties for terminations)0
Gloucester21271222122.1 (7th percentile among the 21 counties for IA investigations per 100 officers)50 (36th percentile among the 21 counties for major discipline records)9 (36th percentile among the 21 counties for terminations)0
Cape May12171142120.4 (2nd percentile among the 21 counties for IA investigations per 100 officers)64 (45th percentile among the 21 counties for major discipline records)11 (52nd percentile among the 21 counties for terminations)0
Sussex1315589174.2 (88th percentile among the 21 counties for IA investigations per 100 officers)18 (12th percentile among the 21 counties for major discipline records)5 (17th percentile among the 21 counties for terminations)0
Hunterdon1611075146.7 (64th percentile among the 21 counties for IA investigations per 100 officers)15 (7th percentile among the 21 counties for major discipline records)4 (10th percentile among the 21 counties for terminations)0
Warren119870140.0 (45th percentile among the 21 counties for IA investigations per 100 officers)9 (2nd percentile among the 21 counties for major discipline records)4 (10th percentile among the 21 counties for terminations)0
Salem86638173.7 (83rd percentile among the 21 counties for IA investigations per 100 officers)21 (17th percentile among the 21 counties for major discipline records)3 (2nd percentile among the 21 counties for terminations)0
FewerMore

Shading on IA per 100 officers named, Major discipline, and Terminations compares each county to the other 20 shown here (n=21). Each column is shaded against its own range, so shading is never comparable across columns. Not a grade or a judgment.

Sources

  1. [1]New Jersey Internal Affairs Agency Totals, 2021-2025. New Jersey Office of the Attorney General. Sheet "Sheet1", row 1. Snapshot retrieved 2026-06-09. County totals summed over each county's 2025 rows; row 1 is the header. ↩
  2. [2]New Jersey Major Discipline Data, 2020-2025. New Jersey Office of the Attorney General. Sheet "Major Discipline Data", row 1. Snapshot retrieved 2026-07-03. Record counts from each county's rows, all years; row 1 is the header. ↩
  3. [3]Agencies Without Reported IA Investigations, 2021-2025. New Jersey Office of the Attorney General. Companion document to the internal affairs data release (data/source/notes). ↩
  4. [4]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.
  5. [5]County population: 2020 Decennial Census, as republished by NJOGIS, carried on NJ_Counties_3857 (FeatureServer layer 0). New Jersey Office of Information Technology, Office of GIS (NJOGIS), https://services2.arcgis.com/XVOqAjTOJ5P6ngMu/arcgis/rest/services/NJ_Counties_3857/FeatureServer/0. Retrieved 2026-07-27.