Bannockburn is a village in West Deerfield and Vernon townships in Lake County, Illinois, United States. Per the 2020 census, the population was 1,013. A northern suburb of Chicago, the village is generally considered part of the North Shore subregion of Chicagoland. It is best known as the location of the main campus of Trinity International University and its component Trinity Evangelical Divinity School, though the university often lists its address as being the larger and more recognizable neighboring suburb of Deerfield. The Friedman house by Frank Lloyd Wright is also located in Bannockburn.