Troy Grove is a village in LaSalle County, Illinois, United States. The population was 305 at the 2000 census. Troy Grove is notable as the birthplace of Wild Bill Hickock. Silica sand, a fine white sand used in making glass, is mined in the vicinity of Troy Grove. Troy Grove apartments for rent comparison page shows most up to date rent information on Troy Grove apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.