Somonauk, Illinois

Somonauk
Location of Somonauk in DeKalb County, Illinois.
Coordinates: 41°37′42″N 88°40′52″W / 41.62833°N 88.68111°W / 41.62833; -88.68111
CountryUnited States
StateIllinois
CountiesDeKalb, LaSalle
TownshipsSomonauk, Northville
Settled1834
Incorporated (village)February 16, 1865 (1865-02-16)
Area
 • Total
2.49 sq mi (6.46 km2)
 • Land2.49 sq mi (6.44 km2)
 • Water0.0077 sq mi (0.02 km2)
Elevation
686 ft (209 m)
Population
 (2020)
 • Total
1,786
 • Density718.0/sq mi (277.22/km2)
Time zoneUTC-6 (CST)
 • Summer (DST)UTC-5 (CDT)
ZIP Code(s)
60552
Area codes815 & 779
FIPS code17-70460
GNIS feature ID2399838
Websitewww.vil.somonauk.il.us

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.