Guilford, Illinois

Guilford Township is one of twenty-three townships in Jo Daviess County, Illinois, USA. At the 2010 census, its population was 1,206 and it contained 1,972 housing units.

The Galena Territory is a census-designated place in Jo Daviess County, Illinois, United States. Its population was 1,058 as of the 2010 census. The territory was incorporated on July 26, 1973. The community consists of a private 6,800-acre (28 km2) development located several miles southeast of downtown Galena. The Territory, which is managed by a homeowners association, has set aside 1,500 acres (6.1 km2) of protected recreational land. The remainder is filled with low-density residential development and Eagle Ridge Resort & Spa. As of August 2017, there were 4,082 property owners, 554 permanent residences, and 1,675 vacation residences.

Lake Galena is a reservoir in Jo Daviess County, Illinois, located near Galena.

Council Hill Township is one of twenty-three townships in Jo Daviess County, Illinois, USA. As of the 2010 census, its population was 141 and it contained 82 housing units. Its name changed from Scales Township on December 6, 1853.

Elizabeth Township is one of twenty-three townships in Jo Daviess County, Illinois, USA. As of the 2010 census, its population was 1,111 and it contained 579 housing units.

East Galena Township is one of twenty-three townships in Jo Daviess County, Illinois, USA. As of the 2010 census, its population was 1,283 and it contained 917 housing units.

Rodden is an unincorporated community located in Elizabeth Township, Jo Daviess County, Illinois, United States.

Schapville is an unincorporated community located west of Apple Canyon Lake and east of The Galena Territory in Thompson Township, Jo Daviess County, Illinois, United States.

The Winston Tunnel is a railroad tunnel located 9 miles (14.5 kilometers) west of Elizabeth, Illinois. The tunnel was completed in 1888 for the Minnesota and Northwestern Railroad, a predecessor to the Chicago Great Western Railway (CGW). The tunnel was located on the CGW main line 152 miles (245 kilometers) west of Chicago in the isolated and hilly Driftless Area of extreme north-western Illinois. In 1972, four years after the Chicago Great Western was merged into the Chicago and North Western Railway (C&NW), the CGW's largely redundant trackage in the area, including the Winston Tunnel, was abandoned. It was the third longest railroad tunnel in Illinois at 2,493 feet (760 m). Two longer (still active) tunnels are located on the Canadian National (ex-Illinois Central) Edgewood Cutoff Line, the longest being Tunnel #2 near Abbot, Illinois which is 6,994 feet (2,132 m) long.

Jo Daviess County () is the northwesternmost county in the U.S. state of Illinois. According to the 2020 census, it had a population of 22,035. Its county seat is Galena.Jo Daviess County is part of the Tri-State Area and is located near Dubuque, Iowa and Platteville, Wisconsin. As part of the Driftless Area, Jo Daviess County contains rugged terrain compared to the rest of the state. Within Jo Daviess County lies Charles Mound, the highest natural point in Illinois, as well as eight of the ten highest points in Illinois.

River Ridge High School, or RRHS, is a public four-year high school located at 4141 Illinois Route 84 South near Hanover, Illinois, a village in Jo Daviess County, Illinois, in the Midwestern United States. RRHS, a part of River Ridge Community Unit School District 210, serves the communities and surrounding areas of Elizabeth and Hanover. The campus is located 27 miles southeast of Dubuque, Iowa, and serves a mixed village and rural residential community.

Bremen is an unincorporated community in Jo Daviess County, Illinois, United States. Bremen is 1.5 miles (2.4 km) southeast of Galena.