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 2026 population of 1,750. Somonauk is currently declining at a rate of -0.28% annually and its population has decreased by -1.8% since the most recent census, which recorded a population of 1,782 in 2020.

The median household income in Somonauk is $84,583 with a poverty rate of 3.89%. The median age in Somonauk is 45.6 years: 45.3 years for males, and 47.1 years for females. For every 100 females there are 94.9 males.

1.8K
Total Population
700
Density (mi²)
-5 -0.28%
Growth

Somonauk Population

Somonauk Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261,750-5-0.28%
20251,755-6-0.34%
20241,761-1-0.06%
20231,762-10-0.56%
20221,772-10-0.56%
20211,78200%
20201,782-4-0.22%
20191,87550.27%
20181,870-2-0.11%
20171,87220.11%
20161,870-3-0.16%
20151,873-5-0.27%
20141,87860.32%
20131,872-5-0.27%
20121,877-2-0.11%
20111,879-14-0.74%
20101,892-1-0.05%

Median Age

Overall: 45.6 years
Female: 47.1 years
Male: 45.3 years

Somonauk Adults

There are 1,248 adults, (402 of whom are seniors) in Somonauk.

Sex Ratio

Female: 805 (51.3%)
Male: 764 (48.7%)

Demographics

The racial composition of Somonauk includes 89.67% White, 5.29% other race, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White1,40789.67%
Other race835.29%
Two or more races644.08%
Black or African American150.96%
Race
Population ↓
Percentage (of total)
Other race583.7%
Two or more races261.66%
White80.51%
Race
Population ↓
Percentage (of total)
White1,39989.17%
Two or more races382.42%
Other race251.59%
Black or African American150.96%

Somonauk Marital Status

Economics and Income Statistics

Somonauk 's average per capita income is $53,056. Household income levels show a median of $84,583. The poverty rate stands at 3.89%.

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$102,115-
Families$98,235$118,779
Households$84,583$103,631
Non Families$57,321$66,753

$53,056

Average Income

$84,583

Median Household Income

3.89%

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)