Dobbs Ferry, village (1990 pop. 9,940), Westchester co., SE N.Y., on the Hudson River, a suburb of New York City; inc. 1873. It is mostly residential but has light industries and research facilities. Dobbs Ferry is the site of Livingston Manor, where George Washington and Marshal Rochambeau are said to have planned the Yorktown campaign. Mercy College and the Masters school for girls are there.