In September 1968 Congress authorized President Lyndon B. Johnson to proclaim National Hispanic Heritage Week, which was observed during the week that included September 15 and September 16. The observance was expanded in 1988 to a month-long celebration (September 15–October 15). America celebrates the culture and traditions of those who trace their roots to Spain, Mexico, and the Spanish-speaking nations of Central America, South America, and the Caribbean. September 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 September 16 and September 18, respectively.

For Census information about the Hispanic population in the United States go to http://www.census.gov/Press-Release/www/releases/archives/facts_for_features_special_editions/013984.html