In the United States, household wealth is unequally distributed. While facts about the distribution are readily available, less is known about the family dynamics that underlie this important component of inequality. An increasing number of households are headed by single females (both never married and divorced), and the number of single mothers among these households has grown in recent decades. This article explores differences in wealth in the US by marital status, gender, and parenting status. It focuses on young baby boomers, finding a minimal gender gap in the wealth of never-married people. However, when controlling for parenthood, strong evidence was found of a family gap in household wealth accumulation, with single mothers and fathers economically disadvantaged in comparison to adults without children. Yet, it was fiound that single mothers suffer the most severe economic penalties in household wealth accumulation.Gender, wealth, divorce, marriage, children, parenthood, JEL Codes: D1, D31, G11,