JACKSON, a town of North America, capital of the state of Mississippi, situate on the right bank of Pearl River, 45 miles E. of Vicksburg, with which it is connected by rail. It contains a state-house, a lunatic asylum, and penitentiary, and supports several newspapers. About 30,000 bales of cotton are annually sent from Jackson to the Mississippi for shipment. Pop. (1853) about 3500.