Malvern is a city in and the county seat of Hot Spring County, Arkansas, United States. Founded as a railroad stop at the eastern edge of the …Malvern is a city in and the county seat of Hot Spring County, Arkansas, United States. Founded as a railroad stop at the eastern edge of the Ouachita Mountains, the community's history and economy have been tied to available agricultural and mineral resources. The production of bricks from locally available clay has earned the city the nickname, "The Brick Capital of the World". The city had a population of 10,318 at the time of the 2010 census, and in 2019 the estimated population was 10,931.