AARP, formerly the American Association of Retired Persons, is an interest group in the United States focusing on issues affecting those over the age of fifty. The organization, which is headquartered in Washington, D.C., said it had more than 38 million members as of 2018. The magazine and bulletin it sends to its members are the two largest-circulation publications in the United States. AARP was formed in 1958 by Ethel Percy Andrus, a retired educator from California, and Leonard Davis, who later founded Colonial Penn's insurance companies. It is an influential lobbying group in the United States. AARP sells paid memberships, and markets insurance and other services to its members. Source: Wikipedia (en)