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.

History

The name "Somonauk" is of Pottawatomie origin. The name is most likely derived from the phonetic phrase As-sim-in-eh-kon, which translates to "pawpaw grove", in reference to the vast groves of pawpaw trees that filled the area at that time.

The Second Treaty of Prairie du Chien, signed by General John McNeil Jr., Colonel Pierre Menard, and Caleb Atwater for the United States on June 29, 1829, references four sections of land being reserved for Chief Awn-kote and his band of 171 villagers "at the village of Saw-meh-naug along the Fox and Illinois Rivers". The Saw-meh-naug, along with the other Pottawatomie of the Illinois River (known as the Prairie Group), as well as the Sauk and the Chippewa, had aided the U.S. in the Black Hawk War. After the war, as a thanks to the Pottawatomie, the U.S. Government signed a treaty allowing the Prairie Group tribes to continue to hunt on U.S. land, outside of their allocated reservations. However, due to "rumors of the Pottawatomie being restless and committing depredations in the northern part of the state spreading to central Illinois", and white residents of the state feeling uncomfortable, the Governor "gave the Prairie Group an ultimatum to leave Illinois". By the end of December 1833, the Pottawatomie had left Illinois, and the settlements of the Pottawatomie were free to be claimed by white settlers. It's also widely known that this church was a stop on the underground railroad.

Later, in 1836, the post office for the settlement of Somonauk was moved to the intersection of Chicago Road and Somonauk Road and the name would be changed to "Somonauk Crossing". Another post office was established in 1850 on Somonauk Road at present-day Buck Lake, and was known as "Buck's Branch". In 1851, the CB&Q railroad finally made its way through the township, and in 1853, built a station along the line 5 miles south of the early settlement (now known as "Franks"), just north of the LaSalle/DeKalb County border. With that, the name "Somonauk" would make one final move to its current location, being in platted in 1855, and incorporated in 1865.

According to the 2021 census gazetteer files, Somonauk has a total area of , of which (or 99.76%) is land and (or 0.24%) is water.

Sannauk Forest Preserve serves as the unofficial boundary between Somonauk and Sandwich, which resides to the east. The forest preserve, owned and managed by DeKalb County, sits along Somonauk Creek, a tributary of the Fox River.

During the housing bubble of the mid-2000s, a few new subdivisions were planned to be built north of town. When the housing market crashed, the city had already incorporated a large portion of DeKalb county north of town ranging from the Sandwich Township border to Governor Beverage Highway, remaining south of Pratt Road. Since then, no talk has indicated that the subdivisions will be built.

The nearby Lake Holiday area includes a man-made lake created by the damming of Somonauk Creek. An old gravel pit was also flooded and is part of the lake.

Demographics

2020 census

As of the 2020 census, Somonauk had a population of 1,786, with 717 households and 518 families. The median age was 40.6 years. 24.0% of residents were under the age of 18 and 18.8% were 65 years of age or older. For every 100 females there were 92.9 males, and for every 100 females age 18 and over there were 86.3 males age 18 and over.

Of the 717 households, 33.5% had children under the age of 18 living in them. 48.7% were married-couple households, 14.2% were households with a male householder and no spouse or partner present, and 28.2% were households with a female householder and no spouse or partner present. About 27.0% of all households were made up of individuals, and 16.6% had someone living alone who was 65 years of age or older.

{| class="wikitable"

|+ Racial composition as of the 2020 census The school's athletic teams are known as the Bobcats. School colors are blue and gold. The school's song is titled "Bobcat Loyalty", and is a basic spin-off of the University of Illinois' fight song, named "Illinois Loyalty".

The community adjoins a private community known as "Lake Holiday". Somonauk School District covers most of the west side of the lake as well as a section of the southeast side. Sandwich Community Unit School District 430 covers most of the east side and a two small sections on the west side of the lake.

References

  • Somonauk Public Library