Accomack, an E. county of Virginia, bordering on Maryland, and forming with Northampton county, from which it was set off in 1672, the peninsula on the E. side of Chesapeake bay; area, 480 sq. m.; pop. in 1870, 20,409, of whom 7,842 were colored. The surface is level and the soil light and moderately fertile. In 1870 the productions were 580,560 bushels of corn, 336,860 of oats, 97,730 of Irish and 212,507 of sweet potatoes, 7,991 lbs. of wool, and 40,284 of butter. Capital, Accomack Court House, or Drummond Town.