A convenience sample of 654 low-income, primarily single, head-of-household mothers participated in a study of the correlates of maternal depression as measured by the Center for Epidemiologic Studies of Depression (CES-D). Across three age groupings, the CES-D was positively correlated with punitive attitudes toward childrearing, inaccurate knowledge of child development, and insufficient social support. Social support was the best predictor of depression from a set of seven potential sociodemographic and psychological predictors. Objective measures of parenting behavior obtained with the Home Observation for Measurement of the Environment were not associated with depression.