In September 1968, Congress authorized President Lyndon B. Johnson to proclaim National Hispanic Heritage Week. The observance was expanded in 1988 to a month long celebration (Sept. 15 - Oct. 15). America celebrates the culture and traditions of U.S. residents who trace their roots to Spain, Mexico and the Spanish-speaking nations of Central America, South America and the Caribbean. Sept. 15 was chosen as the starting point for the celebration because it is the anniversary of independence of five Latin American countries: Costa Rica, El Salvador, Guatemala, Honduras and Nicaragua. In addition, Mexico and Chile celebrate their independence days on Sept. 16 and Sept. 18, respectively.

The term Hispanic, as defined by the U.S. Census Bureau, refers to Spanish-speaking people in the United States of any race. On the 2000 Census form, people of Spanish/Hispanic/Latino origin could identify themselves as Mexican, Puerto Rican, Cuban, or "other Spanish/Hispanic/Latino." More than 35 million people identified themselves as Hispanic or Latino on the 2000 Census.