Bonus Township, Boone County, Illinois

Coon Creek is a 28.1-mile-long (45.2 km) tributary of the Kishwaukee River in northern Illinois.

Russellville is an unincorporated community in Boone County, Illinois, United States. Russellville is southeast of Poplar Grove.

Piscasaw Creek is a 31.6-mile-long (50.9 km) tributary of the Kishwaukee River in the U.S. states of Wisconsin and Illinois. Rising in Walworth County, Wisconsin, it passes through McHenry County, Illinois before discharging into the Kishwaukee in Boone County, Illinois. Piscasaw Creek's mouth is located near Belvidere, Illinois.

Garden Prairie is an unincorporated former village and census-designated place located in Boone County, Illinois, United States. It is part of the Rockford, Illinois Metropolitan Statistical Area.

Boone County is a county located in the U.S. state of Illinois. As of the 2020 census, the population was 53,448. Its county seat is Belvidere.Boone County is included in the Rockford, IL Metropolitan Statistical Area.

Belvidere High School is located in at 1500 East Avenue, Belvidere, Illinois in Boone County.

The Lampert-Wildflower House is a home in the U.S. city of Belvidere, Boone County, Illinois. The main, upright, portion of the house was constructed in 1838 and the wing section was added to the home during the 1860s. It passed through the hands of several owners until it was purchased by Phillip C. Lampert who is responsible for the wildflower covered lawn. The property contains five types of rare plants and is semi-wooded, shaded by 32 trees. The home is a distinct example of Upright and Wing construction, though it retains some elements of the Greek Revival style it was originally designed in. The wing section of the house features a front porch decorated with Gothic Revival and Queen Anne style elements. The house was listed on the U.S. National Register of Historic Places for its architectural significance in 2005.

The Belvidere U.S. Post Office is a historic building located in the Illinois city's downtown business district. It was built in 1911 and represents a good example of Classical Revival architecture. It was added to the National Register of Historic Places as United States Post Office-Belvidere in 2000.

The old Belvidere High School is a complex of four connected buildings that reflect three different architectural styles: Classical Revival, Prairie School, and Art Deco. It is composed of the 1893 Garfield School, a 1900 powerhouse, the 1916 Belvidere High School, and the 1939 Belvidere High School Auditorium & Gymnasium.

Poplar Grove Airport (FAA LID: C77) is a small general aviation airport located in Poplar Grove, Illinois, United States. The airport was founded in 1972 as Belvidere Airport and renamed in 1994. It is located 3 miles south of Poplar Grove, and 3 miles north of Belvidere. The airport is privately owned and open to the public. It is the home of the Poplar Grove Vintage Wings and Wheels Museum and BelAir Estates, a residential fly-in neighborhood. The airport was named 2015 Illinois Private Airport of the Year by the Illinois Department of Transportation's Division of Aeronautics.

The Apollo Theatre is an American theater in Belvidere, Illinois, built in 1921. The Apollo is a contributing property in downtown Belvidere's North State Street Historic District, on the north bank of the Kishwaukee River.: 18  On March 31, 2023, the Apollo's roof collapsed in the midst of a tornado outbreak, during a concert attended by 260 persons.

Rush Creek is a 14.9-mile-long (24.0 km) tributary of the Kishwaukee River in northern Illinois.There is another Rush Creek that is a tributary of the Mississippi River in Carroll County.