African Americans, also known as Black Americans and formerly called Afro-Americans, are an American racial and ethnic group who, as defined by the United States census, consists of Americans who have ancestry from "any of the Black racial groups of Africa". African Americans constitute the second largest racial and ethnic group in the U.S. after White Americans. The term "African American" generally denotes descendants of Africans enslaved in the United States. According to annual estimates from the U.S. Census Bureau, as of July 1, 2024, the Black population was estimated at 42,951,595, representing approximately 12.63% of the total U.S. population.
African-American history began in the 16th century, when African slave traders sold African artisans, farmers, and warriors to European slave traders, who transported them across the Atlantic to the Western Hemisphere. They were sold as slaves to European colonists and put to work on plantations, particularly in the southern colonies. A few were able to achieve freedom through manumission or escape, and founded independent communities before and during the American Revolution. After the United States was founded in 1783, most Black people continued to be enslaved, primarily concentrated in the American South, with four million enslaved people only liberated with the Civil War in 1865.