There have been 137 black members of Congress ever, according to the U.S. House of Representatives History, Art & Archives database.

Over half the states (27) have elected at least one senator or representative who was black. Illinois has had the most with 18, followed by California with 12, and New York and South Carolina with 10. Of the 137 members, 107 were Democrats and 30 were Republicans.

Sen. Hiram Revels (R-Miss.) and Rep. Joseph Rainey (R-S.C.) became the first black members of Congress in 1870.

Note: These figures do not include delegates from Washington, D.C., or U.S. territories.

h/t /r/mapporn