Innsbrook is a village in Warren County, Missouri, United States. The population was 552 at the 2010 census. The village of Innsbrook is comprised almost entirely by Innsbrook Resort—a private, gated community. The village was founded in 1998. The name “Innsbrook” was given to the village as a nod Austria’s Tyrol region, a place where beautiful A-frames can be found clustered around small lakes just like Innsbrook. Construction began on a 236-acre Alpine Lake in 2000.