Malvern is a borough in Chester County, Pennsylvania, United States. The population was 2,998 at the 2010 census. The main road through the borough is King Street, although the borough is also bordered by Paoli Pike on the south, and is near US 30 on the north. The primary cross street is Warren Avenue. The areas north and west of the borough along US 30 are simultaneously known as Malvern and Frazer, and the Frazer post office shares the Malvern zip code. East of Malvern is the village of Paoli. Malvern also contains a train stop on the SEPTA Paoli/Thorndale Line.
Malvern is located at 40°2′4″N 75°30′52″W / 40.03444°N 75.51444°W / 40.03444; -75.51444 (40.034557, -75.514396). The closest major urban center to Malvern is Philadelphia.
According to the United States Census Bureau, the borough has a total area of 1.2 square miles (3.1 km2), all of it land.