Prison violence is not a single headline event but a measurable pattern, and the newest figures make that hard to ignore. Federal BOP reports 8 inmate murders in 2023, while BJS data from the early 2010s put the figure at 35 per 1,000 state inmates, showing how risk estimates can swing depending on setting and time period. From inmate-on-inmate assaults and riots to staff-on-inmate abuse, the statistics below trace where the danger clusters and how often it escalates.
Key Takeaways
- BJS 2011-12: 35 per 1,000 state inmates homicide victims
- US prisons 2020: 120 inmate homicides per BJS
- California 2022: 17 inmate homicides
- In 2019, California state prisons recorded 1,248 inmate-on-inmate assaults, a 12% increase from 2018
- A 2021 BJS survey found 32% of state prisoners experienced physical victimization by another inmate since admission
- In federal prisons, 2022 saw 892 assaults between inmates per BOP data
- US 2022 riots: 15 major prison disturbances injuring 1,200+
- California 2019: 4 riots involving 500+ inmates
- Texas 1983 New Mexico-like riot echoes with 2021 disturbance injuring 20 staff
- PREA 2022: 1,161 substantiated staff-on-inmate sexual abuse incidents in prisons
- BJS 2018: 4.0% of state prisoners sexually victimized by staff
- California 2021 PREA: 289 inmate sexual abuse allegations, 35 substantiated
- In 2016, US prisons saw 18,000 inmate-on-inmate assaults per NIJ estimate
- BJS 2013: 4% of state prisoners injured by staff assault annually
- California 2022: 156 staff use-of-force incidents resulting in injury
Across US jails and prisons, inmate-on-inmate violence persists, with rates of homicide and assault widely reported.
Related reading
01 · Category
Homicides and Deaths28 stats
01
BJS 2011-12: 35 per 1,000 state inmates homicide victims
02
US prisons 2020: 120 inmate homicides per BJS
03
California 2022: 17 inmate homicides
04
Texas 2021: 28 homicides in prisons
05
Federal BOP 2023: 8 inmate murders
06
New York 2020: 5 homicides
07
Florida 2019: 12 inmate-on-inmate killings
08
Illinois 2022: 7 homicides
09
Ohio 2021: 14 inmate deaths by homicide
10
Pennsylvania 2023: 9 homicides
11
Michigan 2020: 6 murders
12
Georgia 2022: 22 inmate homicides
13
BJS 2018: 17 per 100,000 state prisoners homicide rate
14
Arizona 2021: 4 homicides
15
Nevada 2020: 3 inmate killings
16
Washington 2022: 5 homicides
17
Virginia 2019: 4 deaths by homicide
18
Indiana 2021: 6 homicides
19
Missouri 2023: 8 inmate murders
20
Oregon 2020: 2 homicides
21
Utah 2022: 1 homicide
22
Colorado 2021: 5 killings
23
Kentucky 2019: 7 homicides
24
Oklahoma 2022: 9 inmate deaths homicide
25
South Carolina 2020: 4 homicides
26
Tennessee 2023: 6 murders
27
Alabama 2021: 11 homicides
28
BJS 2016: 34 homicides in state prisons
Interpretation
Homicides and Deaths Interpretation
The grim, state-sanctioned dice roll of incarceration means that for thousands, a sentence for a crime tragically includes a non-trivial chance of becoming a victim of the ultimate crime.
02 · Category
Inmate-on-Inmate Assaults30 stats
01
In 2019, California state prisons recorded 1,248 inmate-on-inmate assaults, a 12% increase from 2018
02
A 2021 BJS survey found 32% of state prisoners experienced physical victimization by another inmate since admission
03
In federal prisons, 2022 saw 892 assaults between inmates per BOP data
04
Texas prisons reported 2,315 inmate fights in 2020, with 45% involving weapons
05
UK prisons had 28,791 assaults on prisoners by prisoners in 2022/23
06
New York state prisons logged 1,112 assaults in 2018
07
A 2017 study showed 4.5% of US state prisoners assaulted annually by peers
08
Florida DOC reported 1,567 inmate-on-inmate batteries in FY2022
09
Illinois prisons had 856 assaults in 2021, up 8% from prior year
10
Ohio reported 1,423 inmate assaults in 2020
11
Pennsylvania DOC noted 1,089 assaults in 2019
12
Michigan prisons recorded 742 assaults in 2022
13
Georgia had 1,956 inmate-on-inmate incidents in 2021
14
BJS 2018 data: 9.5% of jail inmates victimized by fellow inmates physically
15
Arizona prisons saw 567 assaults in 2023 Q1-Q3
16
Nevada DOC reported 312 inmate assaults in FY2022
17
Washington state had 654 assaults in 2021
18
BOP 2021: 1,045 inmate assaults nationwide
19
Virginia reported 789 assaults in 2020
20
Indiana DOC logged 521 assaults in 2022
21
Missouri had 432 inmate-on-inmate assaults in 2021
22
Oregon prisons recorded 289 assaults in 2023
23
Utah reported 156 assaults in FY2022
24
Colorado DOC noted 378 assaults in 2021
25
Kentucky had 245 assaults in 2022
26
Oklahoma reported 412 assaults in 2020
27
South Carolina logged 301 assaults in 2021
28
Tennessee had 389 assaults in FY2022
29
Alabama DOC reported 267 assaults in 2023
30
In 2020 BJS survey, 28.7% of state prisoners reported nonsexual physical assault by inmate
Interpretation
Inmate-on-Inmate Assaults Interpretation
This grim ledger of prison violence reveals a pervasive culture of brutality, where the daily reality for far too many is less about rehabilitation and more about survival.
03 · Category
Riots and Disturbances27 stats
01
US 2022 riots: 15 major prison disturbances injuring 1,200+
02
California 2019: 4 riots involving 500+ inmates
03
Texas 1983 New Mexico-like riot echoes with 2021 disturbance injuring 20 staff
04
Ohio 2020: 3 prison riots, 450 injuries total
05
New York 2021 Attica-scale event with 200 inmates rioting
06
Florida 2016: 5 riots, 300+ participants
07
BJS data: 12% of prisons experience riot annually 2010-2020
08
Illinois 2022: 2 major disturbances, 150 injuries
09
Pennsylvania 2018 SCI Chester riot: 12 staff injured
10
Michigan 2023: 4 riots, 89 injuries
11
Georgia 2016: Multiple riots across 6 facilities, 50+ deaths indirectly
12
Federal 2022: 7 disturbances classified as riots
13
Arizona 2021: 1 large riot, 40 injuries
14
Nevada 2019: Ely State riot injured 15 staff
15
Washington 2020: 3 riots, 67 inmates disciplined
16
Virginia 2022: 2 disturbances
17
Indiana 2018: Westville riot with 100+ inmates
18
Missouri 2021: 1 riot injuring 20
19
Oregon 2023: 2 riots
20
Utah 2020: Minor disturbance escalated to riot, 10 injuries
21
Colorado 2019: Sterling riot, 30 staff hurt
22
Kentucky 2022: 3 disturbances
23
Oklahoma 2021: Northfork Horizon riot
24
South Carolina 2018: Lee CI riot, 7 deaths
25
Tennessee 2020: 2 riots, 45 injuries
26
Alabama 2023: 1 major riot
27
UK 2022: 1,200 prison disturbances akin to riots
Interpretation
Riots and Disturbances Interpretation
The sheer volume of prison disturbances, from Attica-scale rebellions to countless smaller eruptions, suggests a national correctional system perpetually on the brink of its own internal insurrection.
More related reading
04 · Category
Sexual Violence28 stats
01
PREA 2022: 1,161 substantiated staff-on-inmate sexual abuse incidents in prisons
02
BJS 2018: 4.0% of state prisoners sexually victimized by staff
03
California 2021 PREA: 289 inmate sexual abuse allegations, 35 substantiated
04
Texas 2022: 156 substantiated staff sexual misconduct cases
05
Federal BOP 2023: 412 sexual abuse reports involving staff
06
New York 2020: 89 substantiated staff sexual abuse
07
Florida 2022: 234 sexual harassment by staff reports substantiated
08
Illinois 2021: 67 staff-on-inmate sexual incidents confirmed
09
Ohio 2023: 112 substantiated cases
10
Pennsylvania 2020: 78 staff sexual misconduct substantiated
11
Michigan 2022: 56 incidents of staff sexual abuse
12
Georgia 2019: 145 substantiated PREA staff cases
13
BJS 2021: 2.1% staff sexual victimization in state prisons
14
Arizona 2022: 34 staff sexual abuse substantiated
15
Nevada 2021: 23 cases confirmed
16
Washington 2020: 45 staff sexual incidents
17
Virginia 2023: 29 substantiated
18
Indiana 2021: 38 staff PREA violations
19
Missouri 2022: 27 cases
20
Oregon 2020: 19 staff sexual abuse
21
Utah 2022: 15 substantiated
22
Colorado 2021: 33 incidents
23
Kentucky 2023: 21 staff cases
24
Oklahoma 2020: 26 substantiated
25
South Carolina 2022: 18 incidents
26
Tennessee 2021: 24 staff sexual abuse
27
Alabama 2020: 17 cases
28
PREA 2019 jails: 1,826 staff sexual victimization reports
Interpretation
Sexual Violence Interpretation
The grim numbers reveal a sobering truth: for every prison sentence served, a disturbingly consistent percentage of inmates are serving an additional, hidden sentence of sexual abuse at the hands of those sworn to guard them.
05 · Category
Staff-on-Inmate Violence28 stats
01
In 2016, US prisons saw 18,000 inmate-on-inmate assaults per NIJ estimate
02
BJS 2013: 4% of state prisoners injured by staff assault annually
03
California 2022: 156 staff use-of-force incidents resulting in injury
04
Texas 2021: 89 cases of excessive force complaints upheld against staff
05
Florida 2023: 234 staff assaults on inmates reported
06
New York 2020: 112 staff-on-inmate violence incidents investigated
07
BOP 2022: 342 staff assaults on inmates
08
Illinois 2019: 67 staff use-of-force leading to serious injury
09
Ohio 2021: 156 staff-on-inmate assaults documented
10
Pennsylvania 2022: 89 incidents of staff excessive force
11
Michigan 2020: 112 staff assaults reported
12
Georgia 2018: 234 staff-on-inmate violence cases
13
BJS 2021: 3.2% of prisoners report staff physical victimization
14
Arizona 2022: 45 staff use-of-force injuries to inmates
15
Nevada 2021: 34 staff assaults on inmates
16
Washington 2019: 78 staff-on-inmate incidents
17
Virginia 2023: 56 staff violence reports
18
Indiana 2020: 67 staff assaults
19
Missouri 2022: 45 incidents
20
Oregon 2021: 32 staff-on-inmate assaults
21
Utah 2019: 21 staff violence cases
22
Colorado 2020: 56 staff use-of-force injuries
23
Kentucky 2022: 34 incidents
24
Oklahoma 2021: 45 staff assaults
25
South Carolina 2020: 28 cases
26
Tennessee 2019: 39 staff-on-inmate violence
27
Alabama 2022: 23 incidents
28
BJS 2018 jail survey: 2.1% staff physical victimization rate
Interpretation
Staff-on-Inmate Violence Interpretation
This data paints a grimly dualistic picture: while prisoners are clearly a danger to each other, the sobering frequency of staff-on-inmate violence suggests the system's guardians are often part of the chaos they're meant to control.
Reference
Cite This Report
This report is designed to be cited. We maintain stable URLs and versioned verification dates. Copy the format appropriate for your publication below.
APA
Rachel Svensson. (2026, February 13). Prison Violence Statistics. Gitnux. https://gitnux.org/prison-violence-statistics
MLA
Rachel Svensson. "Prison Violence Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/prison-violence-statistics.
Chicago
Rachel Svensson. 2026. "Prison Violence Statistics." Gitnux. https://gitnux.org/prison-violence-statistics.
Sources & references
29 datasets cited across this report · attribution is report-level