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) is an unincorporated community in Upper Macungie Township, Pennsylvania, United States. It lies in the Lehigh Valley between Breinigsville and Wescosville.
Air Products & Chemicals is located adjacent to Trexlertown. The town also is the home of the Lehigh Valley Velodrome.
Trexlertown is located at (40.5481519, -75.6057430), at an altitude of 400 feet (122 m).