Check out these books:
Black Americans: A Statistical Sourcebook
E 185.5 .B512x (Reference Desk Collection)
This work compiles a variety of diverse facts and statistics about all aspects of African American life. The information is arranged by demographics and characteristics of the population; vital statistics and health; education; government and public opinion; crime and law enforcement; labor force; earnings, income, poverty and wealth; and special topics.
Historical Statistics of Black America
E 185 .H543 1995
This 2-volume set provides historical statistics and tables about African Americans beginning in the 18th century through about 1975. The volumes are arranged by broad topics and include things such as: agriculture, business, law enforcement, education, the family, health, housing, wealth, labor, military, politics, population, religion, the professions, slavery and the slave trade, sports, leisure, and vital statistics.
Statistical Record of Black America
E 185.5 .S83
Provides statistical data on all aspects of African American life including vital statistics, attitudes, values, business, economics, crime, legal justice, education, health and medical care, housing, income, labor and employment, politics, population, social services, sports and leisure, and the family.
You can try these online government document sources, too: