Muhlenberg Township is a township in Berks County, Pennsylvania, United States. The population was 21,915 at the 2020 census, making it the third-most populous township in Berks County after Spring Township and Exeter Township.

Pennsylvania Route 12 (PA 12) is a 9.566-mile-long (15.395 km) state highway located in Berks County in eastern Pennsylvania. The western terminus of the route is at U.S. Route 222 (US 222) and US 422 in Wyomissing. Its eastern terminus is PA 662 in the community of Pricetown in Ruscombmanor Township. In the Reading area, PA 12 is a four-lane freeway called the Warren Street Bypass that heads northeast through urban areas, coming to interchanges with multiple roads including PA 183, PA 61, and US 222 Business (US 222 Bus.). In Alsace Township, the route becomes a two-lane undivided road with at-grade intersections called Pricetown Road and continues northeast through rural areas, intersecting PA 73 before ending at PA 662.