The rise in children's experience in single-parent families is well do
cumented. However, it remains unknown whether their unmarried parents
are living alone or coresiding with unmarried partners. Perhaps more i
mportantly it is unknown how the economic contributions of parent's co
habiting partners influence the economic well-being of children. Using
data from the recently released 1990 decennial census PUMS, we provid
e national estimates of the percentage and socioeconomic characteristi
cs of U.S. children living in cohabiting-couple families. Our results
reveal that 2.2 million children (3.5%) reside in cohabiting-couple fa
milies and that racial differences are substantial. Roughly 1 in 7 chi
ldren in unmarried-parent families also live with their parent's unmar
ried part ner. Although these children have two potential caretakers a
nd economic providers, our results indicate that parental resources fa
ll short of their counterparts in married-couple families. A cohabitin
g partner's economic contribution results in a 29% reduction in the pr
oportion of children in cohabiting-couple families living In poverty,
but still they fare poorly in comparison with children in married-coup
le families.