Home values, rents and more in Somonauk, IL
September 2026 figures from Zillow and the U.S. Census Bureau · updated 2026-11-07
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How Somonauk compares
The typical home in Somonauk, IL is worth about $323,000, according to the Zillow Home Value Index for September 2026. Home values in Somonauk are 9% below the typical value in the Chicago metro area ($356,000) and 12% below the U.S. typical value ($366,000).
Over the past year, home values in Somonauk rose 6.5%, compared with +5.0% in the Chicago metro area and +1.2% nationally.
The median household income is $84,583, against $90,887 in the Chicago metro area and $80,734 in the U.S. (Census Bureau, American Community Survey 2020–24).
About 1,569 people live in Somonauk (American Community Survey 2020–24).
Somonauk has the 132nd-lowest typical home value of the 326 cities in the Chicago metro area and the 202nd-highest of 1,005 in Illinois with Zillow figures.
Part of: DeKalb County, IL · Chicago metro area · Illinois
More for Somonauk in ProMap Plus
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- 5- and 10-year price changes
- Days on market and months of supply
- Price cuts and sale-to-list ratio
- Price-to-income and monthly cost to buy
- Crime rates
- Homeowners insurance premiums
- Commute time to downtown
- Flood, wildfire and natural hazard risk
- Property-tax rate
- 2024 presidential vote
- Age, education and household make-up
- Amenities and transit nearby
Nearby cities
ZIP codes in Somonauk, IL
Sources
Home values: Zillow Home Value Index (ZHVI), all homes, middle tier, smoothed and seasonally adjusted, September 2026. Rents: Zillow Observed Rent Index (ZORI), seasonally adjusted. Population: Census population estimates (July 2025) for states, metros and counties; ACS 2020–24 for cities and ZIP codes. Income: U.S. Census Bureau, ACS 2020–24 5-year estimates. Boundaries: U.S. Census Bureau cartographic boundary files. Compiled by Home Economics.
"Typical" is Zillow's middle-tier value (homes between the 35th and 65th percentiles), not a median sale price. Changes are over the 12 months to September 2026.