Jennerstown is part of the Johnstown, Pennsylvania Metropolitan Statistical Area and is located in Somerset County. Jennerstown has never been a large town and is linked with Route 30. It is located north of Somerset and south of Johnstown. Jennerstown is home to the Mountain Playhouse, Pennsylvania's oldest professional stock theater, which opened in 1939. Another popular Jennerstown attraction is Jennerstown Speedway, which hosts Saturday night racing from May to September and is located at the intersection of Route 30 and Route 985. Weekly Racing Divisions include Late Models, Street Stocks, Modifieds, Chargers and the Fast 'N Furious 4's. Special events include the International Super Modified Association (ISMA), SuperCup Stock Car Series and Enduro Races.