Upper Saucon Township is situated in the southeastern corner of Lehigh County approximately 60 miles north of Philadelphia and 80 miles east of Harrisburg. The Township is bordered on the north by Salisbury Township, on the east by Lower Saucon Township (Northampton County), on the south by the Borough of Coopersburg and Springfield Township (Bucks County), and on the west by Lower and Upper Milford Townships.
Upper Saucon Township is linked to the regional transportation network by three major highways - Interstate 78, PA Route 309 and PA Route 378. Interstate 78 traverses the northeastern section of the Township until it merges with Route 309 in the north-central area. The Interstate then swings north and shares six lanes with Route 309 until it meets US Route 22 northwest of the Township in Upper Macungie Township. Route 309 runs through the center of the Township and provides a direct link to Quakertown, Philadelphia and other Bucks County and Montgomery County communities to the South. Route 378 runs north from Route 309 in the south-central area of the Township and eventually meets US Route 22 in the City of Bethlehem.
Upper Saucon has been a bedroom community for the Lehigh Valley region including the cities of Allentown, Bethlehem and Easton. The rolling hills and farmland that characterize the Township and its convenient location with easy access to PA Route 309, Interstate 78 and US Route 22 have made Upper Saucon a very attractive place to live for those wanting both a somewhat rural atmosphere but also access to metropolitan amenities.