A town and the county-seat of Union county, South Carolina, U.S.A., about 66 m. N.W. of Columbia. Pop. (1900) 54 00, of whom 1701 were negroes; (U.S. census 1910) 5623. Union is served by the Southern and the Union & Glenn Springs railways; the latter connects at Pride, 16 m. distant, with the Seaboard Air Line. The city is situated in the Piedmont region near the foot of the Blue Ridge Mountains. It is the seat of Clifford Seminary for Young Women (opened, 1881; chartered, 1883), and has a Carnegie library. Union is in a rich cotton-growing, farming and fruit-growing region, and deposits of gold, magnetic iron ore, marble and granite are found. The town has several large cotton mills and a large knitting mill. Union was settled about 1755 and was incorporated as a town in 1872.