This report compares U.S. single-parent families with single-parent families in 16 other high-income countries. We find that U.S. single-parent families are the worst off. They have the highest poverty rate. They have the highest rate of no health care coverage. They face the stingiest income support system. They lack the paid-time-off-from-work entitlements that in comparison countries make it easier for single parents to balance caregiving and jobholding. They must wait longer than single parents in comparison countries for early childhood education to begin. They have a low rate of child support receipt.