Westernville, New York is a hamlet in Oneida County, located west of Adirondack Park and north of Utica.The Town of Western was formed from the Town of Steuben on March 10, 1797. Its 40,000 acres contain fertile soil and an abundant supply of water, including the Mohawk River, Lansing Kill, Big Brook, Stringer Brook, and other small streams. Westernville is the birthplace of Gen. Henry Halleck, one time Commander-in-Chief of the Union Armies. Westernville is also the birthplace of 9-time National NASCAR Modified Champion and 2012 NASCAR Hall of Fame Inductee Richie Evans.Gustavus Swan, a supporter of Samuel F. B. Morse, the inventor of the first Telegraph System, worked closely with Morse to build and extend the telegraph lines across New York State. Swan constructed and resided in the Swan Homestead still located on Main Street in the upper village. The Swan home is on the walking tour of roughly 18 historic homes along Main Street in the village.