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Juvenile Population Characteristics
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Juveniles as Offenders
Time of Day
Q: When are juveniles most likely to commit violent crime?
A: Violent crimes by juveniles occur most frequently in the hours immediately following the close of school on school days.

Juvenile violent crime time-of-day profiles
(Offenders per 1,000 juvenile violent crime offenders)

 
    Violent crime   
Time School Nonschool

6AM 4.8 2.3
7AM 22.0 3.8
8AM 32.2 7.1
9AM 27.8 7.5
10AM 29.9 9.3
11AM 38.1 12.4
12PM 44.7 17.9
1PM 38.1 16.9
2PM 57.2 20.9
3PM 69.6 23.3
4PM 47.0 24.6
5PM 36.0 25.7
6PM 35.3 27.3
7PM 31.9 28.9
8PM 31.3 29.6
9PM 24.8 27.4
10PM 18.1 24.6
11PM 11.6 19.6
12AM 8.3 15.7
1AM 4.9 11.8
2AM 3.3 8.5
3AM 3.1 5.9
4AM 1.8 3.5
5AM 1.4 2.4
6AM 4.8 2.3

Note: Violent crimes include murder, violent sexual assault, robbery, aggravated assault, and simple assault. Data are from law enforcement agencies in 35 states and the District of Columbia.

[ Graph version ]  [ Excel file ]

  • Juvenile violence peaks in the afterschool hours on school days and in the evenings on nonschool days.
  • On nonschool days, the incidence of juvenile violence increases through the afternoon and early evening hours, peaking between 7 p.m. and 9 p.m.
  • The number of school days in a year is essentially equal to the number of nonschool days in a year. Despite this split, most (63%) violent crimes committed by juveniles occur on school days. Nearly one-fifth (19%) of juvenile violent crimes occur in the 4 hours between 3 p.m. and 7 p.m. on school days. A smaller proportion of juvenile violent crime (15%) occurs during the standard juvenile curfew hours of 10 p.m. to 6 a.m. (inclusive of both school and nonschool days).
  • The annual number of hours in the curfew period (i.e., 8 hours every day in the year) is 4 times greater than the number of hours in the 3 p.m. to 7 p.m. period on school days (i.e., 4 hours in half of the days in the year). Therefore, the rate of juvenile violence in the afterschool period is 5 times the rate in the juvenile curfew period (inclusive of both school and nonschool days).
  • Consequently, efforts to reduce juvenile crime after school would appear to have greater potential to decrease a community’s violent crime rate than do juvenile curfews.

Internet citation: OJJDP Statistical Briefing Book. Online. Available: http://www.ojjdp.gov/ojstatbb/offenders/qa03301.asp?qaDate=2010. Released on May 22, 2014.

Data Source: National Archive of Criminal Justice Data. National Incident-Based Reporting System, 2009 and 2010: Extract Files [Computer file]. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor].

 

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