4-H in the Unite States is a youth organization administered by the Cooperative State Research, Education, and Extension Service (CSREES) of the United States Department of Agriculture (USDA) with the mission of "engaging youth to reach their fullest potential while advancing the field of youth development." The four "H"s stand for Head, Heart, Hands, and Health. The organization serves over 6.5 million members in the United States from ages 5 to 19 in approximately 90,000 clubs. 4-H clubs and related organizations now exist in many other countries as well; the organization and administration varies from country to country.