Malvern is a city in Mills County, Iowa, United States. The population was 1,256 at the 2000 census, estimated in 2008 at 1,323. The Wabash Trace--a railroad converted to a bicycle trail—passes through Malvern. The Mills County Fair is held here, although Glenwood is the county seat. Malvern is the largest town in the eastern half of the county.