About 7% of U.S. adults age 65 and older live in residential communities, a proportion that rises with age as functional limitations increase. Among people age 85 and older, 22% live in these communities, which come in great variety. Congregate housing provides a variety of support services, including meals in a common dining room, along with watchful oversight of residents with physical and mental disabilities, and is becoming an increasingly popular long-term care option. Life-care communities offer a range of housing alternatives, from independent or congregate housing to full nursing home care. For a large initial payment and additionally monthly fees, life care guarantees that seniors' changing needs will be met within the same facility as they age. No U.S. federal regulations govern assisted living facilities. Shared values and goals among residents with similar backgrounds also enhance life satisfaction.