The YMCA of the USA includes the more than 2,500 YMCAs throughout the United States. This makes the YMCA the largest nonprofit community service organization in America. The nonprofit organization works to meet the health and human service needs of more than 20 million men, women and children in more than 10,000 communities. YMCA locations provide the heart of community life as more than 42 million families and 72 million households are located within three miles of a YMCA. The organization is a source for tips and expert advice on subjects, such as child care, exercise, nutrition and youth development. Millions of people have been introduced to sports through their participation in YMCA programs. YMCA also offers programs and activities that include camping, swimming and child care. YMCA of the USA is headquartered in Chicago.