PA 518 heads into commercial areas and becomes the border between the city of Sharon to the north and Farrell to the south, with the name of the road becoming Division Street.

PA 518 passes a mix of residential and commercial establishments as it reaches US 62 Business (US 62 Bus.).

The route makes a curve to the east into residential areas, becoming Thornton Street, prior to turning north onto Hall Avenue.

The road passes more homes and runs through a small portion of Hermitage prior to entering the borough of Sharpsville.

Here, PA 518 bends to the north-northeast along West Ridge Avenue, eventually curving to the east-northeast.