Multiple factors likely influence the language development of young children growing up in low-income homes, potentially including stressors experienced by parents. Here, we ask: (1) What is the association between stress (i.e., economic hardship and parenting stress) and toddlers’ language development? and (2) Does number of hours spent in nonparental childcare moderate the relation between stress (i.e., economic hardship and parenting stress) and toddlers’ language development? Participants were 100 mother-child dyads participating in a longitudinal study when children were 0 to 24 months of age. (author abstract)