Defining social capital as perceived access to time and money help fro
m friends and family, this article examines (a) the stock of social ca
pital to which families have access, (b) the trade-off between access
to money and time help, and (9) the association between perceived acce
ss to time and money help and conventional measures of family economic
well-being. Data come from the 1980 wave of the Panel Study of Income
Dynamics, an ongoing longitudinal survey of U.S. households. More tha
n 9 out of 10 families reported access to social capital. Some evidenc
e for isolation from social capital among families with a less-educate
d or older head was found. Surprisingly families in very poor neighbor
hoods reported more access to social capital, primarily in friend-base
d networks. Finally, geographic mobility leads to increased social iso
lation, because it reduces family ties.