Somonauk Flag

Somonauk

County:
DeKalb County
County Seat:
No
Area (mi²):
2.501
State:
Illinois

Somonauk is a village located in DeKalb County, Illinois. Somonauk has a 2025 population of 1,743. Somonauk is currently declining at a rate of -0.46% annually and its population has decreased by -2.35% since the most recent census, which recorded a population of 1,785 in 2020.

The average household income in Somonauk is $100,081 with a poverty rate of 5.9%.The median age in Somonauk is 46.1 years: 45.3 years for males, and 47 years for females.

1.7K
Total Population
697
Density (mi²)
-8 -0.46%
Growth

Somonauk Population

Somonauk Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Somonauk includes 92.46% White, and smaller percentages for other race, Black or African American and multiracial populations.

Population by Race

White (92.5%)

Two or more races (4.3%)

Other race (2.3%)

Black or African American (0.9%)

Race
Population
Percentage (of total)
White1,47292.46%
Two or more races694.33%
Other race362.26%
Black or African American150.94%

Somonauk Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Somonauk's average per capita income is $51,359. Household income levels show a median of $81,731. The poverty rate stands at 5.9%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$102,000-
Families$96,310$117,400
Households$81,731$100,081
Non Families$52,500$60,752

$51,359

Average Income

$81,731

Median Household Income

5.9%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)