Adverse childhood experiences, such as abuse and neglect, have been shown to have longstanding negative consequences on a child's development and outcomes. Studies have noted that there is variation in how youth in child welfare respond to adversity, yet few studies have examined the psychometrics of measures of resilience in this population. In particular, the 14-item Resilience Scale (RS-14) is a widely used instrument yet has not been evaluated for use with adolescents in child welfare populations. The purpose of the study was to describe the levels of resilience reported by adolescent girls involved in the child welfare system and to evaluate the reliability, validity, and factor structure of this scale in this population. Participants were 249 adolescent girls, ages 12-19, who were involved in the child welfare system. Interviews assessed resilience, symptoms of post-traumatic stress, depression, social problem-solving, and demographic variables. Results indicated that levels of resilience among the participants were in the moderate range. The RS-14 demonstrated evidence of good internal consistency and test-retest reliability. Convergent and discriminant validity were established. Confirmatory factor analysis testing a single-factor solution resulted in a weak model fit. A follow-up exploratory factor analysis supported a two-factor solution. Findings suggest this instrument is an appropriate tool for use in child welfare populations.