Having children outside of marriage–nonmarital childbearing–is increasingly common in the United States. A new Research Brief, Childbearing Outside of Marriage: Estimates and Trends in the United States, describes how the population of women bearing children outside of marriage has changed, often in ways that challenge public perceptions. Nonmarital childbearing remains a significant public concern as it is linked to negative outcomes for women and their children across a range of measures, as well as with a reliance on public assistance.