Black Population of the United States, 1880. Map of North America. 51% plus black residents are found in South East America. 26% to 50% black residents are found in South East America; 11% to 25% black residents are found in few parts in the south. 3% to 10% black residents are found in few parts in south and central America. Less than 2% black residents are found in West America and North East America. Territories no census data are found in a long strip from north to south in Central America.