Commercial Real Estate Market in Somonauk, IL
Updated monthly: sale, lease, property records, location trend, and more… · Last update: August 31
8 active listings and 121 off-market properties in Somonauk, IL.
Market Trends
Somonauk, IL spans 26.6 square miles in DeKalb County, Illinois. Figures below refresh monthly; last updated 31 August 2026.
Office
Office vacancy in Somonauk, IL runs 21.3% across the Midwest region in 2025, up from 13.7% in 2019.
Vacancy Rate % in Midwest region
Retail
Retail vacancy in Somonauk, IL runs 6.3% across the Midwest region in 2025, down from 8% in 2020.
Vacancy Rate % in Midwest region
Industrial
Industrial vacancy in Somonauk, IL runs 4.9% across the Midwest region in 2025, up from 4.4% in 2019. Nearly 1.6x the 2022 low of 3.1%.
Vacancy Rate % in Midwest region
Multifamily
Multifamily vacancy in Somonauk, IL runs 8% across the Midwest region in 2025, up from 6.5% in 2022.
Vacancy Rate % in Midwest region
Zoning & Land Use
Land Use Mix share of zoned land by category
- Agricultural 55.4%
- Residential 23.6%
- Industrial 6.5%
- Commercial 4.3%
- Civic 1%
Largest Zones share of zoned land by district
Agricultural District
Single Family Residence District
No Zoning
Single Family Residence District
General Residence District
Agricultural District (A-1)
The Residential A and Residential A-1 Zoning Districts are intended to recognize and support the predominant rural and agricultural character of Somers and provide for residential use and development in these areas appropriate to the environmental characteristics of the land (such as soil types, terrain, and infrastructure capacity) and the character of the…
Market overview
Demographics & Economy
Somonauk, IL has 4,339 residents in 1,999 households. Density runs 163 people per square mile. Median household income here is $122,375 and median gross rent $1,306 a month.
4,339
Population
1,999
Households
2.2
Avg Household Size
42
Median Age
30%
College-Educated
98%
High-School Grad
26.6 sq mi
ZIP Area
163
Density / Sq Mi
$122,375
Median Household Income
$54,114
Median Earnings
$1,306
Median Rent
$245,300
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Sandwich | — | — |
| Leland | — | — |
| Millington | — | — |
| Millbrook | — | — |
Commercial property in Somonauk, IL asks $33/SF.
Frequently Asked Questions
What is the average price per square foot for commercial property in Somonauk?
Commercial property in Somonauk, IL asks an average of $33 per square foot.
Where does Realmo's Somonauk market data come from?
Realmo compiles Somonauk, IL figures from 6 recent recorded sales, 8 active sale listings, 121 tracked off-market properties, the current Somonauk zoning release. Sale and lease figures refresh monthly; vacancy annually. Last updated 31 August 2026.
Methodology & data sources
- Asking prices and averages
- Computed from 8 active for-sale and 0 active for-lease listings in Somonauk, IL. These are ASKING figures from live listings, not closed-transaction prices, and a segment carried by a handful of listings reads as indicative rather than an average.
- Vacancy rates
- Published per-sector market series, taken at the metro level where one exists and otherwise at the Census-region level — a chart reading "in <region> region" is a regional number, not this city's.
- Zoning and land use
- The current municipal zoning release: 1,495 zoned acres across 10 districts. Shares are of zoned land, so parcels the release leaves unclassified are excluded from the mix.
- Refresh
- The monthly aggregates close at the end of the previous month, so 31 August 2026 — not today — is the honest last update.
- Known limitations
- office vacancy is reported at Midwest region level, retail vacancy is reported at Midwest region level and industrial vacancy is reported at Midwest region level.
- Coverage
- Metrics below the 10-observation threshold fall back one geographic level. The geography used is named on each figure.
Compiled by the Realmo Data team · reviewed 31 August 2026 · report a data issue
