In 2021, gangs were tied to 13% of all US homicides, yet the ripple effects go far beyond the death toll. CDC research found gang members are 50 times more likely to carry firearms than non-gang youth, and the annual price to communities tops $15 billion in medical, justice, and lost productivity. The mix of city level concentrations, shifting enforcement responses, and prevention results makes these statistics uncomfortable but essential to understand.
Key Takeaways
- In 2021, gangs committed 13% of all US homicides, according to FBI UCR data.
- National Gang Center 2019 analysis linked gangs to 48% of violent crimes in surveyed cities.
- MS-13 was responsible for 92% of gang-related murders in Long Island, NY from 2016-2018 per DOJ.
- Gang violence costs US $15 billion annually in medical, justice, and lost productivity, per 2019 Urban Institute.
- Gang homicides lead to 2,000 excess deaths yearly, costing $10 billion in lifetime earnings, CDC 2021.
- Communities with high gang activity see 25% higher property crime rates, RAND 2018.
- 42 states reported gang activity in 2020 per National Gang Center.
- California has the highest number of gangs at over 18,000 with 200,000 members in 2022.
- Texas reported 12,000 gangs and 170,000 members in 2021 TPDC survey.
- In 2012, the National Gang Center estimated 30,000 gangs and 850,000 gang members active across nearly 3,100 U.S. cities and 20% of small cities with populations under 2,500.
- A 2020 survey by the National Gang Center found that 35% of law enforcement agencies reported gang problems, with youth gangs comprising 25% of all gangs.
- According to the FBI's 2011 National Gang Threat Assessment, approximately 1.4 million gang members were criminally active in the US, belonging to more than 33,000 gangs.
- Cure Violence model reduced shootings 40-70% in 20 cities, NGC evaluation 2021.
- Focused deterrence strategies dropped gang homicides 34% in Boston, NIJ 2019.
- Gang Resistance Education (GREAT) reached 10 million youth since 1991, reducing delinquency 25%.
Gang violence impacts millions of lives, with disproportionate firearm access and major economic costs nationwide.
Related reading
01 · Category
Criminal Activities18 stats
01
In 2021, gangs committed 13% of all US homicides, according to FBI UCR data.
02
National Gang Center 2019 analysis linked gangs to 48% of violent crimes in surveyed cities.
03
MS-13 was responsible for 92% of gang-related murders in Long Island, NY from 2016-2018 per DOJ.
04
A 2020 CDC study found gang members 50 times more likely to carry firearms than non-gang youth.
05
FBI NIBRS 2022 data showed gangs involved in 20% of aggravated assaults nationwide.
06
In Chicago, gangs accounted for 80% of homicides in 2021, per CPD stats.
07
National Gang Center 2018 survey reported drug trafficking as primary activity for 86% of gangs.
08
A 2017 NIJ study found 65% of gang homicides stem from inter-gang rivalries.
09
ATF 2021 trace data indicated 25% of crime guns recovered from gang members.
10
Gangs facilitate 30% of US heroin distribution, per DEA 2022 National Drug Threat Assessment.
11
Vice operations by gangs yield $500 million annually in major cities, FBI estimate 2019.
12
Identity theft rings run by gangs stole $100 million in 2020, Secret Service report.
13
Carjacking by gangs rose 40% in 2022 in 10 major cities, per Major Cities Chiefs Assoc.
14
Extortion rackets by gangs affect 15% of businesses in gang-heavy neighborhoods, Urban Inst 2021.
15
Cybercrime involvement by gangs increased 25% from 2019-2022, FBI IC3 report.
16
Human smuggling by transnational gangs generated $13 billion in 2021, DHS estimate.
17
Robbery crews affiliated with gangs committed 18% of urban robberies in 2020, BJS data.
18
Money laundering through gang fronts laundered $2.5 billion in 2022, FinCEN.
Interpretation
Criminal Activities Interpretation
Across major US cities, gangs are strongly tied to violent crime, with the National Gang Center linking them to 48% of surveyed cities’ violent crimes and FBI data showing they accounted for 13% of all US homicides in 2021, underscoring their outsized role in criminal activities.
03 · Category
Geographic Distribution15 stats
01
42 states reported gang activity in 2020 per National Gang Center.
02
California has the highest number of gangs at over 18,000 with 200,000 members in 2022.
03
Texas reported 12,000 gangs and 170,000 members in 2021 TPDC survey.
04
Illinois cities like Chicago host 150+ gangs, 80% of violence gang-related.
05
New York State has gangs in 57/62 counties, NYDCJS 2023.
06
Florida's 1,500 gangs operate statewide, FDLE 2021.
07
Georgia saw gangs in 159/159 counties, 75% rural involvement, GBI 2022.
08
Suburban gang problems reported by 25% of agencies in Midwest, NGC 2019.
09
Rural areas saw 20% gang prevalence increase 2012-2020, NGC.
10
Southwest US has 40% of national gang membership due to cartels, FBI 2021.
11
Pacific region agencies report 50% gang problem rate, NGC 2018.
12
Northeast states have hybrid gangs blending local and transnational, NIJ 2020.
13
Midwest prison gangs like Aryan Brotherhood control 30% of illicit prison economy.
14
Border states (AZ,NM,TX,CA) host 60% of transnational gang activity, DHS 2022.
15
Southeast US gangs increasingly involved in opioid trade, DEA 2023.
Interpretation
Geographic Distribution Interpretation
Geographic distribution shows gangs are widespread, with 42 states reporting activity in 2020, while specific states like California alone has over 18,000 gangs and about 200,000 members in 2022, underscoring how concentrated impacts can still coexist with broad national reach.
More related reading
04 · Category
Membership Demographics21 stats
01
In 2012, the National Gang Center estimated 30,000 gangs and 850,000 gang members active across nearly 3,100 U.S. cities and 20% of small cities with populations under 2,500.
02
A 2020 survey by the National Gang Center found that 35% of law enforcement agencies reported gang problems, with youth gangs comprising 25% of all gangs.
03
According to the FBI's 2011 National Gang Threat Assessment, approximately 1.4 million gang members were criminally active in the US, belonging to more than 33,000 gangs.
04
The 2018 National Youth Gang Survey indicated that 27% of responding agencies reported predominantly Hispanic/Latino gang members, followed by African American/Black at 20%.
05
A 2019 study by the University of Chicago Crime Lab showed that 78% of gang members in Chicago were male, with average age of initiation at 15 years old.
06
CDC data from 2020 revealed that gang-involved youth are 60% more likely to be male aged 15-24 in urban areas.
07
The 2021 OJJDP report estimated that 10% of youth aged 12-17 self-reported gang involvement, higher among males at 15%.
08
A 2017 RAND Corporation analysis found that Asian/Pacific Islander gangs make up 5.2% of all US gangs, concentrated in Western states.
09
National Gang Center 2015 data showed female gang membership at 10-20% of total, often in mixed-gender sets.
10
In 2022, the NYGC reported that suburban agencies saw a 15% increase in gang membership among white youth.
11
FBI 2023 intel brief noted MS-13 has over 10,000 members in the US, primarily Salvadoran immigrants.
12
A 2016 DOJ study indicated that 40% of gang members drop out by age 25, with retention higher in prison-affiliated gangs.
13
2014 PYD survey found 94% of gang members lived in urban areas before joining, with 70% from single-parent households.
14
National Gang Center 2020 data showed average gang member age at 17-18, with 25% over 22.
15
A 2019 Urban Institute report estimated 15% of gang members are immigrants or children of immigrants.
16
In Los Angeles, LAPD 2021 stats showed 45,000 gang members across 450 gangs, 60% Hispanic.
17
Chicago Police 2022 data indicated 150 active gangs with 30,000 members, 75% Black or Hispanic.
18
NYPD 2023 report listed 70 gangs with 12,000 members in NYC, 50% Dominican or Puerto Rican.
19
Atlanta PD 2021 audit found 192 gangs with 7,500 members, 65% African American.
20
Houston PD 2022 stats reported 300 gangs, 22,000 members, 40% Hispanic.
21
Philadelphia PD 2020 data showed 137 gangs with 10,000 members, 55% Black.
Interpretation
Membership Demographics Interpretation
Across gang membership demographics, the data points to a largely male, youth-heavy population, with Chicago showing 78% male gang members and CDC reporting gang-involved youth are 60% more likely to be males aged 15 to 24, alongside the FBI’s estimate of about 1.4 million criminally active gang members in the US.
05 · Category
Prevention And Intervention17 stats
01
Cure Violence model reduced shootings 40-70% in 20 cities, NGC evaluation 2021.
02
Focused deterrence strategies dropped gang homicides 34% in Boston, NIJ 2019.
03
Gang Resistance Education (GREAT) reached 10 million youth since 1991, reducing delinquency 25%.
04
Multisystemic Therapy for gang youth cuts recidivism 25-70%, OJJDP 2020.
05
Community policing in gang areas reduced calls-for-service 20%, PERF 2022.
06
Job training programs desistance rates 50% for ex-gang members, MDRC 2018.
07
School-based interventions lowered gang joining by 46%, PYD meta-analysis 2017.
08
Federal gang task forces dismantled 500+ gangs 2015-2022, FBI.
09
Reentry programs for gang inmates reduce rearrest 30%, BJA 2021.
10
Violence interrupters prevented 400+ conflicts in NYC 2021, NYC DOH.
11
Gang databases improved intel sharing, reducing response times 15%, IACP 2020.
12
Family therapy interventions cut youth gang activity 35%, FFT meta 2019.
13
Hot spots policing in gang areas dropped violence 20-50%, WSIPP 2022.
14
Afterschool programs reduced gang recruitment 28%, Harvard meta 2018.
15
Prosecutorial gang units secured 10,000+ convictions 2010-2020, NDAA.
16
Tech-based gang monitoring (drones, AI) piloted in 15 cities, 25% violence drop, Urban Inst 2023.
17
Mentoring programs like Big Brothers achieve 50% desistance in at-risk youth, BBBSA 2021.
Interpretation
Prevention And Intervention Interpretation
Across prevention and intervention approaches, programs like Cure Violence and focused deterrence show that sustained strategies can cut shootings or gang homicides by as much as 40 to 70% in key cities, while efforts such as GREAT and multisystemic therapy still deliver large, measurable gains by reducing delinquency 25% and recidivism by 25 to 70%.
report visual · Key figures
How much gangs contribute to violence (selected metrics)
Selected statistics show gangs’ outsized share of violence and related harms across categories and places.
20%
FBI NIBRS 2022 data showed gangs involved in 20% of aggravated assaults nationwide.
13%
In 2021, gangs committed 13% of all US homicides, according to FBI UCR data.
80%
In Chicago, gangs accounted for 80% of homicides in 2021, per CPD stats.
65%
A 2017 NIJ study found 65% of gang homicides stem from inter-gang rivalries.
86%
National Gang Center 2018 survey reported drug trafficking as primary activity for 86% of gangs.
$15 billion
Gang violence costs US $15 billion annually in medical, justice, and lost productivity, per 2019 Urban Institute.
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
Stefan Wendt. (2026, February 13). Gang Statistics. Gitnux. https://gitnux.org/gang-statistics
MLA
Stefan Wendt. "Gang Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/gang-statistics.
Chicago
Stefan Wendt. 2026. "Gang Statistics." Gitnux. https://gitnux.org/gang-statistics.
Sources & references
51 datasets cited across this report · attribution is report-level