No study has yet assessed the psychometric properties of scores from any mindfulness measure in racial minority adolescents from low-income environments. The present study examined the reliability and validity of Child and Adolescent Mindfulness Measure (CAMM) scores in a nonclinical sample of late adolescents (N = 92) from low-income neighborhoods who predominantly identified as African American. Findings confirmed a one-factor structure for responses to the 10 CAMM items as well as adequate internal consistency (Cronbach’s α = .88). In support of validity, CAMM scores demonstrated large significant negative correlations with scores from measures of constructs that should be negatively related to mindfulness, including depressive symptoms, worry, ruminative coping, and involuntary engagement responses to stress. Thus, CAMM scores appear to reliably and validly assess mindfulness in racial minority adolescents from low-income environments. Having a psychometrically sound mindfulness measure for this population will aid in understanding the mechanisms by which mindfulness-based interventions work, which could lead to improved interventions and outcomes for this population.