Annually since 1995, the National Youth Gang Center (NYGC) has conducted the National Youth Gang Survey (NYGS) of law enforcement agencies across the United States regarding the presences and characteristics of local gang problems. This Fact Sheet summarizes NYGS findings from the 2004 survey. The nationally representative sample included the following agencies: (1) All police departments that serve cities with a population of 50,000 or more (n = 625) (larger cities); (2) All suburban county police and sheriff's departments (n = 741) (suburban counties); (3) A randomly selected sample of police departments that serve cities with a population between 2,500 and 49,999 (n = 696) (smaller cities); and (4) A randomly selected sample of rural county police and sheriff's departments (n = 492) (rural counties). NYGC asked survey recipients to report information solely for youth gangs, defined as "a group of youths or young adults in your jurisdiction that you or other responsible persons in your agency or community are willing to identify as a 'gang'." Motorcycle gangs, hate or ideology groups, prison gangs, and exclusively adult gangs were excluded from the survey.