The Galena Territory is a census-designated place in Jo Daviess County, Illinois, United States. Its population was 1,500 in 2020, an increase from 1,058 in the 2010 census. The territory was incorporated on July 26, 1973. The community consists of a private 6,800-acre development located several miles southeast of downtown Galena. The Territory, which is managed by a homeowners association, has set aside 1,500 acres of protected recreational land.