Northville Township, LaSalle County, Illinois

Lake Holiday is a census-designated place located on Lake Holiday in Northville Township, LaSalle County, Illinois, United States. Its population was 5,687 as of the 2020 census. The homes on the western banks of the lake are served by the Somonauk Fire Department/EMS and the Somonauk School District, while the eastern banks of the lake are covered by Sandwich municipal services (Fire/EMS, CUSD 430). However, due to the community's location south of the LaSalle-DeKalb county line, neither Sandwich Police nor Somonauk Police have any jurisdiction. Instead, the area is patrolled by local security, which has limited authority. For serious matters, the community is covered by the LaSalle County Sheriff's Department, which has a substation in the Northville Township Building, a few miles to the south of Lake Holiday.The Lake Holiday CDP includes the neighborhoods surrounding Lake Holiday as well as neighboring Wildwood, which sits to the east of County Highway 3. Lake Holiday was created in the mid-1960s as a lake resort community, with its property owners association being incorporated on July 2, 1965. Wildwood was created around the same time, as a modular home community just across the highway. Starting in the early 1990s, an annex to Wildwood known as "Wildwood South" or "New Wildwood" was created, with completion around 2002. Both subdivisions share a gas station and a small retail area, with a restaurant having been built in 2006-2007 farther north, just south of the county line. Lake Holiday was created by damming up Somonauk Creek in 1965, on its path south toward its confluence with the Fox River just north of Sheridan.

Northville is an unincorporated community in Northville Township, LaSalle County, Illinois, United States. Northville is located on County Highway 2 and North 4325th Road. The Fox River is just south of the community, and once formed the southern boundary of the town.Canadian Benjamin Lett, known as the "Rob Roy" of Canada, lived on his family's farm in Northville, in the 1850s. He is buried at Lett Cemetery, near Northville.

Somonauk Creek is a tributary of the Fox River, which it joins in the Northville Township part of Sheridan, Illinois, United States. Somonauk Creek is approximately 36 miles (58 km) in length, and its source is 3.5 mi (6 km) north of Waterman. It has been dammed to form Lake Holiday, south of the village of Somonauk. The lake is the second lake in the City of Sandwich, with the first, Lake Davis, having been drained in the early 1900s to create usable farmland. The community later needed a lake to replace the one it lost, so in agreement with the Village of Somonauk, the community decided to place a dam on Somonauk Creek to form the new lake. The lake was marketed to the suburbs of Chicago as a recreation spot, with the community later making it a permanent subdivision, with housing located around the whole lake.

Sheridan is a village in LaSalle County, Illinois, United States. As of the 2020 census, the village's population was 2,431, up from 2,137 at the 2010 census. It is part of the Ottawa Micropolitan Statistical Area.

Somonauk is a village in DeKalb and LaSalle Counties in the U.S. state of Illinois. The population was 1,786 at the 2020 Census, down from 1,893 at the 2010 Census. The DeKalb County portion of Somonauk is part of the Chicago-Naperville-Elgin, IL-IN-WI Metropolitan Statistical Area, while the small portion that lies in LaSalle County is part of the Ottawa, IL Micropolitan Statistical Area.

WDYS (1480 kHz) is a commercial AM radio station broadcasting a soft oldies and adult standards format. Licensed to Somonauk, Illinois, it serves DeKalb County and the Fox Valley, suburbs west of Chicago. It is owned by Nelson Multimedia Inc., with programming coming from Westwood One's "America's Best Music" service. WDYS is powered at 250 watts by day, and only 10 watts at night. Programming is also heard on 250-watt FM translator W268DB at 101.5 MHz, licensed to Yorkville. The studios and transmitter are on Frazier Road in Plano.

Millington is a village in Kendall and LaSalle counties in the U.S. state of Illinois. The population was 617 at the 2020 census, down from 665 at the 2010 census.The Kendall County portion of Millington is part of the Chicago–Naperville–Joliet Metropolitan Statistical Area, while the LaSalle County portion is part of the Ottawa Micropolitan Statistical Area.

The Sheridan Correctional Center is a medium-security state prison for men located in Sheridan, LaSalle County, Illinois, owned and operated by the Illinois Department of Corrections.The facility runs unique programs for substance abuse and mental health issues.The extensive grounds (75 buildings on a total of 270 acres) were first opened in 1941 as a juvenile facility. It was run as the "Illinois State Reformatory at Sheridan" from 1949 through 1953, and the "Illinois Industrial School for Boys" from 1953 through 1973.

Sandwich Community Unit School District #430 is a school district headquartered in Sandwich, Illinois, United States.

Mission Township is located in LaSalle County, Illinois. As of the 2010 census, its population was 3,972 and it contained 1,083 housing units.

Sandwich Community High School is a public four-year secondary education school located in Sandwich, Illinois, about 60 miles from Chicago. The high school is part of Sandwich Community Unit School District 430. The school is a member of the Interstate Eight Conference, and the school participates in Baseball, Softball, Volleyball, Cross Country, Soccer, Golf, Boys/Girls Basketball, Wrestling, Boys/Girls Track & Field, Fishing, Swimming and Diving, Doing It, Scholastic Bowl, and all music-related competitions. The high school is currently a class 4A school in Football, while competing as class A or B in other events due to its enrollment size.

Sandwich City Hall, which is also known as the Sandwich City Hall & Opera House, is the government center for the city of Sandwich, Illinois, in DeKalb County. The first floor of the building is occupied by city government while the second floor of the historic building houses an active opera house. Sandwich City Hall & Opera House is listed on the National Register of Historic Places and has been since 1979.