Somonauk Township, DeKalb County, Illinois

Somonauk Township is one of nineteen townships in DeKalb County, Illinois, USA. As of the 2020 census, its population was 2,006 and it contained 823 housing units.[2]

Somonauk Township
Township
Location in DeKalb County
Location in DeKalb County
DeKalb County's location in Illinois
DeKalb County's location in Illinois
Coordinates: 41°40′19″N 88°41′07″W
Country United States
State Illinois
CountyDeKalb
EstablishedNovember 6, 1849
Area
 • Total19.35 sq mi (50.1 km2)
 • Land19.27 sq mi (49.9 km2)
 • Water0.08 sq mi (0.2 km2)  0.43%
Elevation
[1]
712 ft (217 m)
Population
 (2020)
 • Total2,006
 • Density100/sq mi (40/km2)
Time zoneUTC-6 (CST)
 • Summer (DST)UTC-5 (CDT)
ZIP codes
60548, 60552
FIPS code17-037-70473

Geography

According to the 2021 census gazetteer files, Somonauk Township has a total area of 19.35 square miles (50.12 km2), of which 19.27 square miles (49.91 km2) (or 99.57%) is land and 0.08 square miles (0.21 km2) (or 0.43%) is water.[3]

Cities, towns, villages

Unincorporated towns

Cemeteries
  • Oak Mound
  • Oakridge
  • Van Olindas

Airports and landing strips
  • George Airport
  • Warren Landing Strip

Lakes
  • Buck Lake

Demographics

As of the 2020 census[2] there were 2,006 people, 786 households, and 528 families residing in the township. The population density was 103.68 inhabitants per square mile (40.03/km2). There were 823 housing units at an average density of 42.54 per square mile (16.42/km2). The racial makeup of the township was 90.23% White, 0.40% African American, 0.70% Native American, 0.25% Asian, 0.00% Pacific Islander, 2.39% from other races, and 6.03% from two or more races. Hispanic or Latino of any race were 6.68% of the population.

There were 786 households, out of which 28.40% had children under the age of 18 living with them, 57.51% were married couples living together, 8.65% had a female householder with no spouse present, and 32.82% were non-families. 27.00% of all households were made up of individuals, and 9.70% had someone living alone who was 65 years of age or older. The average household size was 2.64 and the average family size was 3.21.

The township's age distribution consisted of 21.9% under the age of 18, 9.3% from 18 to 24, 20.2% from 25 to 44, 29.5% from 45 to 64, and 19.1% who were 65 years of age or older. The median age was 43.7 years. For every 100 females, there were 88.9 males. For every 100 females age 18 and over, there were 86.7 males.

The median income for a household in the township was $76,944, and the median income for a family was $87,045. Males had a median income of $48,750 versus $26,830 for females. The per capita income for the township was $35,866. About 1.1% of families and 5.5% of the population were below the poverty line, including 2.9% of those under age 18 and 3.8% of those age 65 or over.

Historical population
CensusPop.Note%±
1930966—
1940939−2.8%
19501,07714.7%
19601,27318.2%
19701,44813.7%
19801,61011.2%
19901,543−4.2%
20001,72711.9%
20102,10121.7%
20202,006−4.5%
US Decennial Census[4]

School districts

Political districts

References
  • "Somonauk Township, DeKalb County, Illinois". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved July 4, 2010.
  • US Census Bureau 2009 TIGER/Line Shapefiles
  • US National Atlas
  1. U.S. Geological Survey Geographic Names Information System: Somonauk Township, DeKalb County, Illinois
  2. "Explore Census Data". data.census.gov. Retrieved January 22, 2023.
  3. Bureau, US Census. "Gazetteer Files". Census.gov. Retrieved January 22, 2023.
  4. "Census of Population and Housing". Census.gov. Retrieved June 4, 2016.
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