OBJECTIVE: This study reports the prevalence of emotional and behavioral problems among youths placed in juvenile correctional facilities in Jordan and describes the effect of length of stay on mental health outcomes. METHOD: The Youth Self Report (YSR) was administered to 187 adolescent males (mean age=16.4, SD=1.0) in all five juvenile detention facilities in Jordan in 2011. Descriptive statistics were calculated to estimate the prevalence of emotional and behavioral problems. Logistic regression models were estimated to evaluate the impact of placement length on mental health. Statistical models were weighted by the youth propensity to be 'long-stay' youths (>23 weeks) based on preplacement case characteristics. RESULTS: The prevalence of clinically significant emotional and behavioral problems was 84%. 46% had YSR scores above the clinical cutpoint in both the internalizing and externalizing subscales. 24% of youths reported suicidal ideation. The high prevalence of emotional and behavioral disorders was stable across placement for most YSR subscales. CONCLUSIONS: The prevalence of emotional and behavioral disorders among detained and incarcerated youth in Jordan mirrors the literature worldwide. These findings suggest that serious mental health problems for many youths persist throughout placement.