Borough of Freemansburg The Borough of Freemansburg was incorporated in January, 1856 and is approximately one square mile in size. Named after Jacob Freeman, whose grandfather settled this area in the 1700's, the Borough has grown to a population of over 2000 residents. Nestled in the heart of the Lehigh Valley along the banks of the Lehigh River, a portion of the Borough is located within the historic Delaware & Lehigh National Heritage Canal Corridor. Lock 44 of the D&L Canal is situated within the Borough limits along with the original Lock Keeper's House and the restored Mule Barn. Remains of the Geissinger Grist Mill are also located between the Lock and the River. The Borough maintains its portion of the Towpath, which is an educational and scenic journey for residents and visitors alike. Visit the Delaware & Lehigh National Heritage Corridor to find things to do in Eastern Pennsylvania. ;