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Somonauk, IL
Village in DeKalb County, Illinois.
Population
1,569
Land area
2.5sq mi
People per sq mi
627
ZIP codes
0
Somonauk and its ZIP codes
Somonauk at a glance
- Somonauk is about 2.7 times as dense as Illinois as a whole.
- The median household income is $84,583, close to the Illinois median.
- A typical owner-occupied home is valued at $234,400 (11% below Illinois) and median rent is $993 a month.
Local data for Somonauk, IL
Counts from official public data
Housing and community stats
Somonauk, IL, American Community Survey 2020-2024
Median household income
$84,583
Poverty rate
3.9%
Median home value
$234,400
Median rent
$993/mo
Homeownership
73.9%
Bachelor's or higher
22.7%
Median age
45.6
Average commute
27.8 min
Largest reported origins and ancestries: German Americans (531), Irish Americans (205), Norwegian Americans (147).
Economy and federal money
Jobs, pay, income and spending are for DeKalb County. PPP loans are for Somonauk.
Unemployment rate
3.6%
Sep 2026, -0.8 pts in a year
Average annual pay
$59,423
36,506 jobs, 2025
Income per person
$55,006
BEA, 2024
Federal spending
$551M
FY 2026, $5,487 per person
How people get to work
Somonauk, IL, workers 16 and older. American Community Survey 5-year estimates
- Drove alone85.1%
- Carpooled4.1%
- Public transit0.0%
- Walked2.6%
- Bicycle0.3%
- Taxi, ride-hailing, motorcycle or other1.0%
- Worked from home6.9%
Average one-way commute: 27.8 minutes for people who do not work from home.
Environment and hazard risk
Somonauk, IL, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: cold wave
Storm events since 1996
603
Countywide, mostly thunderstorm wind
Flood insurance policies
152
0.5% of homes, county
July high / Jan low
84° / 15°F
33.8 inches of rain a year
Health statistics
Share of adults in Somonauk, IL, CDC PLACES estimates
Obesity
34.7%
U.S. 33.3% +1.4 pts
Diabetes
10.6%
U.S. 12.1% -1.5 pts
Smoking
12.8%
U.S. 12.8% about the same
Uninsured (18-64)
6.9%
U.S. 11.1% -4.2 pts
Cities near Somonauk
| Name | Distance | Land area (sq mi) |
|---|---|---|
| Lake HolidayCensus-designated place | 2.1 mi | 3.5 |
| SandwichCity | 3.4 mi | 4.7 |
| LelandVillage | 6.3 mi | 0.5 |
| MillingtonVillage | 7 mi | 0.7 |
| MillbrookVillage | 7.9 mi | 1.8 |
| SheridanVillage | 8 mi | 2.1 |
| HinckleyVillage | 9.1 mi | 0.9 |
| NewarkVillage | 9.3 mi | 1.1 |
| WatermanVillage | 9.7 mi | 1.5 |
| PlanoCity | 9.9 mi | 9 |
| SerenaCensus-designated place | 11 mi | 0.2 |
| Big RockVillage | 11 mi | 4.3 |
| HardingCensus-designated place | 12 mi | 0.2 |
| YorkvilleCity | 13 mi | 20.1 |
| EarlvilleCity | 13 mi | 1.2 |
| ShabbonaVillage | 13 mi | 1.3 |
Frequently asked questions
- What county is Somonauk, IL in?
- Somonauk is in DeKalb County, Illinois.
- What is the population of Somonauk, IL?
- About 1,569 people live in Somonauk, based on American Community Survey 5-year estimates.
- What cities are near Somonauk?
- Nearby places include Lake Holiday (2.1 mi), Sandwich (3.4 mi), Leland (6.3 mi), Millington (7 mi), Millbrook (7.9 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023