According to the United States Census Bureau, the borough has a total area of , of which is land and , or 1.69%, is water. Lehighton is located south of Jim Thorpe, the Carbon County seat, and northwest of Palmerton. Lehighton is bordered on the north, west, and south by Mahoning Township and across the Lehigh River on the east by Weissport and Franklin Township.
According to the United States Census Bureau, the borough has a total area of , of which is land and , or 1.69%, is water. ,Lehighton is located south of Jim Thorpe, the C,arbon County seat, and northwest of Palmerton. Lehighton is bordered on the north, west, and south by Mahoning Township and across the Lehigh River on the :east by Weissport and Franklin Township.