The article provides a bridge between recent marriage market research
and studies of welfare incentive effects on U.S. family formation. Est
imates from state and county fixed-effects models indicate significant
effects of changing state Aid to Families with Dependent Children, fo
od stamps, and Medicaid expenditure levels on county-level changes in
families headed by unmarried mothers. However, neither changing welfar
e benefit levels nor declining economic and marital opportunities coul
d account for recent increases in female headship. The results imply t
hat large additional cuts in welfare payment levels would lead to only
small reductions in the percentage of female-headed families with chi
ldren.