The 115th House District includes:
- Bethlehem (Lehigh County – Wards 10, 11, 12, & 13)
- Catasauqua Borough
- Coplay Borough
- Fountain Hill Borough
- Hanover Township
- Salisbury Township (Wards 1 & 2; District 13-2)
- Whitehall Township (Districts 1, 2, 3, 4, 5, 6, 8, 9, & 12