A s the Baby Boom generation nears retirement and old age, concerns about how the United States will meet the long-term-care needs of its growing elderly population are intensifying. The Social Security Administration projects that one in five Americans will be aged 65 or older by the year 2030, compared with about 13 percent now. Most of the increase will occur between 2010 and 2030 as the Baby Boom generation turns 65. Whereas the family has long been the primary source of long-term care for the elderly, the steep increase in the elderly population casts doubts on whether it can continue in this role as the number and proportion of older adults increases.In particular, there is concern that demographic trends affecting the number of potential family caregivers and the competing demands for their time threaten their willingness and ability to continue assume most of the responsibility for long-term care. Trends toward delayed childbearing and increased female labor-force participation, for example, suggest a growing "sandwich generation," especially of women, who are caught between the demands of child rearing and elder care while attempting to play a more demanding role in the work force. Reduced availability of family caregivers clearly could affect the economic and physical well-being of the elderly and their families. Public budgets will Recent evidence suggesting a downward trend in the age-adjusted prevalence of disability and functional limitation among the elderly has raised hopes that long-term-care burdens on families and public programs will be less than feared. However, even with a lower disability prevalence, growth in the size of the elderly population could result in a constant or larger absolute number of elderly persons needing assistance, depending on the relative rates of change. Any increase in the level of disability among the disabled also could imply greater burdens on affected families and public programs. Thus, there is a pressing need for information on how disability is changing and how families are responding to those changes.We rely on the 1984 and 1994 National Long Term Care Surveys (NLTCS) to update the estimates of potential and active family caregivers presented by Stone and Kemper (1989) and to examine changes over the decade in informal family caregiving. We use consistent methodology to measure the prevalence of chronic disability among the elderly in each year and the distribution of the disabled elderly by receipt of informal and formal care and by the presence of spouses or children who might provide care. Finally, we examine the characteristics of both potential family caregivers and those who actually provide care and discuss the implications of observed changes.