Essington (E-seeng-tuhn), uninc. village, Tinicum township, Delaware co., SE Pa., suburb, 9 mi/14.5 km SW of downtown Philadelphia, on Delaware R., at mouth of Darby Creek, on Tinicum Isl.; 39°51'N 75°17'W. Mfg. (plastic prods., helicopter research and development). Philadelphia International Airport to E. First white settlement in Pa. made 1643 by Swedes on Tinicum Isl. just offshore. Valley Forge State Forest to S, on Little Tinicum Isl.
