The report provides national-level and facility-level estimates of sexual victimization by type of activity, including youth-on-youth sexual contact, staff sexual misconduct, and level of coercion. It also includes an analysis of the experience of sexual victimization, characteristics of youth most at risk to victimization, where the incidents occur, time of day, characteristics of perpetrators, and nature of the injuries. Finally, it includes estimates of the sampling error for selected measures of sexual victimization and summary characteristics of victims and incidents. The report and appendix tables provide a listing of results for sampled state and large locally or privately operated facilities, as required under the Prison Rape Elimination Act of 2003 (P.L. 108-79). Facilities are listed alphabetically by state with estimated prevalence rates of sexual victimization as reported by youths during a personal interview and based on activity in the 12 months prior to the interview or since admission to the facility, if shorter. Highlights include the following: 1) this report presents findings from the first National Survey of Youth in Custody (NSYC), representing 26,550 adjudicated youth held nationwide in State operated and large locally or privately operated juvenile facilities; overall, 91 percent of youth in these facilities were male and 9 percent were female; 2) about 12 percent of youth in State juvenile facilities and large non-state facilities (representing 3,220 youth nationwide) reported experiencing one or more incidents of sexual victimization by another youth or facility staff in the past 12 months or since admission, if less than 12 months; and 3) about 2.6 percent of youth (700 nationwide) reported an incident involving another youth and 10.3 percent reported an incident involving staff.