Census 2000 data showed that approximately 20.9 mil- lion American families had at least one member with a dis- ability 1 and that they differed in important ways from other families.  Disability can be measured in a variety of ways, as described in the next section.  The remainder of this report presents esti- mates of disability preva- lence in American families using the measures available from Census 2000, discusses the general economic well- being of families with mem- bers with a disability, and examines differences across demographic groups and geographical regions.