Cecil (SEE-sill), county (417 sq mi/1,080 sq km; 1990 pop. 71,347), extreme NE Md.; Elkton; 39°34'N 75°57'W. At head of Chesapeake Bay and at base of Eastern Shore, it is bounded S by Sassafras R., E by Del. state line, N by Pa. state line, W by the Susquehanna. Drained by Elk R. (receives Chesapeake and Delaware Canal W of Chesapeake City), Northeast R., Bohemia R., and Octoraro Creek. Livestock raising, dairying, agr. (wheat, corn, vegetables, fruit); granite quarries, sand and gravel pits; mfg. (transportation equip., medical instruments, rubber goods); commercial fisheries. Includes Elk Neck (state park and state forest) and Susquehanna Flats (waterfowl hunting). The co. was created by proclamation in 1674, and takes its name from Cecil Calvert, the 2d Lord Baltimore. A boundary dispute in the N part of the co. bet. Lord Baltimore and William Penn was resolved only by the drawing of the Mason-Dixon line in 1765.
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