This study examined associations among socioeconomic status (SES), SES-related variables, and sleep in young middle school adolescents. Participants included 155 seventh-graders attending two urban New England middle schools. Aspects of the SES environment included parent demographic variables (e.g., income and education), neighborhood environment, and family home environment. Students completed 1 week of actigraphy to estimate sleep patterns. Results demonstrated that the timing and consistency of school-night sleep were associated with demographic and behavioral aspects of SES, whereas weekend sleep schedules were associated with demographic, behavioral, and neighborhood aspects of SES. Finally, regularity in school-night and weekend sleep schedules were associated with demographic and neighborhood aspects of SES.