The Administration on Aging (AoA) is an agency of the United States Department of Health and Human Services. AoA awards annual grants (computed by formulas) to State government agencies on aging and Native American tribal organizations to support programs mandated by the Congress in the Older Americans Act. AoA also awards discretionary grants to research organizations working on projects within the broad outlines of the Act. It conducts statistical activities in support of the research, analysis, and evaluation of programs to meet the needs of an aging population.