18th District Northampton County Bethlehem City Bethlehem Township City of Easton Freemansburg Borough Glendon Borough Hellertown Borough Lower Saucon Township Palmer Township North Catasauqua Borough Northampton Borough Stockertown Borough Tatamy Borough West Easton Borough Williams Township Wilson Borough Lehigh County Bethlehem City Catasauqua Borough Coplay Borough Emmaus Borough Fountain Hill Borough Hanover Township Salisbury Township Whitehall Township