Looking to buy a home in Wellsville? We can help. Wellsville is a small borough in Warrington Township in northern York County. While there has been new construction on the outskirts, Wellsville proper has changed very little visually during the twentieth century; the borough's appearance has remained that of a nineteenth-century community, complete with brick sidewalks and Gothic Revival and Greek Revival houses. Nearly all of the community is on the National Register of Historic Places. Wellsville is home to the Warrington Sporting Clays aka Warrington Club, which has a sporting clay course and hunting rounds. Students are served by the Northern York School District.