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IL area data

Somonauk, IL

Somonauk, IL.

Population: 4,285 (Census ACS)

The typical home value in Somonauk, IL is $333,014 — up 7.4% over the past year. Homes sell for a median $266,950 after a median 92 days on market. 3 schools serve the area (NCES). FEMA's National Risk Index rates the county's overall natural-hazard risk Relatively Moderate, with cold wave, strong wind, drought the top-rated hazards. Cost of living is at the US average (BEA, metro/state-level).

Backed by 25+ public sourcesFEMA · U.S. Census · NOAA · Dept. of Education · EPA · and more

$333,014

Typical home value

+7.4%

1-year change

92

Median days on market

Relatively Moderate

Hazard risk (county)

Home values & appreciation

Typical home value
$333,014
1-year appreciation
+7.4%
3-year appreciation
+23.6%
5-year appreciation
+38.1%
10-year appreciation
+100.3%
Peak value since 2000 (Aug 2026)
$333,014
House Price Index (state)
340.3 (+5.5% YoY)

Sources: home value index (ZIP-level) · FHFA House Price Index (state-level)

Market activity

Median sale price
$266,950
Median list price
$309,900
Median price per sqft
$198
1-year sale-price change
-28.0%
Median days on market
92 days
Homes sold (recent period)
12
For-sale inventory
14
Sale-to-list ratio
97.4%
Active listings
20
New listings (monthly)
5

Source: recent area sales and market data (ZIP-level)

Rents

Studio fair-market rent
$1,052/mo
1BR fair-market rent
$1,155/mo
2BR fair-market rent
$1,481/mo
3BR fair-market rent
$2,006/mo
4BR fair-market rent
$2,301/mo

Sources: market rent index (ZIP-level) · HUD Fair Market Rents (metro/county-level, 40th-percentile regulatory reference)

Affordability

Cost of living index (Above Average)
100.0 (100 = US avg)
Electricity rate (state-level)
17.7¢/kWh
Natural gas rate (state-level)
$11.30/MCF
30-year mortgage rate (national)
7.40%
15-year mortgage rate (national)
6.73%

Sources: BEA Regional Price Parities (metro/state-level) · EIA energy rates (state-level) · Freddie Mac PMMS (national)

Schools

Total schools
3
Elementary schools
1
Middle schools
1
High schools
1
Avg student-teacher ratio
11.8 : 1
Schools include
Somonauk High School, Somonauk Middle School, James R Wood Elem School

Source: NCES school directory, 2024-25 (school-address-based)

Natural hazards & flood risk

Overall hazard risk (county)
Relatively Moderate
Top hazards (county)
cold wave, strong wind, drought, ice storm, inland flooding
Notable hazard ratings (county)
cold wave: Relatively High · strong wind: Relatively High · drought: Relatively Moderate · tornado: Relatively Moderate · ice storm: Relatively Moderate · lightning: Relatively Moderate
Most common flood zone among NFIP claims
Zone AE
NFIP flood claims on record
1
Wildfire risk to homes (county)
Higher than 7% of US counties
Buildings in wildfire direct-exposure zone
22.2%
Radon potential (county)
High radon potential — EPA Zone 1 of 3
EPA Superfund (NPL) sites within 5 mi
None
Nearest Superfund site
Ottawa Radiation Areas (22.8 mi)
Flood zones vary by property. Look up a specific address on the FEMA Flood Map Service Center.
EPA recommends radon testing for every home regardless of zone.

Sources: FEMA National Risk Index (county-level) · FEMA NFIP flood-insurance claims (ZIP-level) · USDA Forest Service Wildfire Risk to Communities (county-level) · EPA radon zones + Superfund NPL

Climate (30-year normals)

Average annual temperature
79.0°F
Average high
80.0°F
Average low
78.0°F
Annual precipitation
42.4 in
USDA plant hardiness zone
5b (extreme annual low -15 to -10°F)

Sources: NOAA Climate Normals (30-year, nearest-station) · USDA Plant Hardiness Zone Map (2023)

Walkability & transit

Walkability index
3.7 / 20
Transit service frequency
-99,999
Jobs reachable by car (30 min)
5,776
Jobs reachable by transit (45 min)
8,976

Source: EPA Smart Location Database (metropolitan block groups)

Amenities

National parks within ~60 mi
1
Nearest national park
Pullman National Historical Park (57 mi)
Airports within 30 mi
70
Nearest airport
Warren Airport (2 mi)
Nearest major airport
Dupage Airport (DPA) (29 mi)
Hospitals in or near this ZIP
27
Hospitals include
SAINT JOSEPH MEDICAL CENTER, CARLE HEALTH PROCTOR HOSPITAL, OSF SAINT ELIZABETH MDL CTR
Avg hospital rating (CMS)
3.6 / 5
Best hospital rating nearby (CMS)
5.0 / 5
Solar radiation rating
Fair (3.9 kWh/m²/day)

Sources: National Park Service · FAA airport data · CMS hospital data (same ZIP, else within ~40 mi) · DOE/NREL (proximity-based)

Migration

Net migration (county)
-334 tax filers

Source: IRS SOI county-to-county migration (county-level; published with a multi-year lag)

Housing stock

Median year housing built
1975
Housing built before 1970
36.5%
Housing built 2000 or later
19.6%
Median annual property tax
$6,057
Mean commute to work
32 min
Households with broadband internet
77.5%

Source: Census ACS 5-year estimates (ZIP-level)

Employment & development

Total county employment
32,330
Average weekly wage
$1,180
Top industries (by employment)
Accommodation & Food, Health Care, Wholesale Trade
Annual residential building permits (county)
60

Sources: BLS QCEW (county-level) · Census Building Permits (county-level)

How it compares

SomonaukState medianUS median
Typical home value$333,014$194,869$288,527
Median sale price$266,950$212,000$325,000
Median days on market92 days48 days51 days
Median annual property tax$6,057$2,696$2,006

State and US medians are computed across all US ZIP codes with sufficient public-data coverage, from the same sources as the figures above.

Area data compiled from public government, academic, and industry research feeds. Data sources →

Common questions

What is the typical home value in Somonauk, IL?
$333,014.
What is the median sale price in Somonauk, IL?
$266,950.
How long do homes take to sell in Somonauk, IL?
Median days on market: 92 days.
What is typical rent in Somonauk, IL?
2-bedroom fair-market rent: $1,481/month (HUD FMR — a 40th-percentile regulatory reference, not market-observed).
What is the natural-hazard risk in Somonauk, IL?
Overall risk: Relatively Moderate (FEMA NRI, county-level). Top hazards: cold wave, strong wind, drought, ice storm, inland flooding.
Is Somonauk, IL in a flood zone?
Flood zones vary by property within Somonauk, IL. 1 FEMA flood-insurance (NFIP) claim is on record; the most common zone among them is AE. Check a specific address on the FEMA Flood Map Service Center.
What is the wildfire risk in Somonauk, IL?
Risk to homes is higher than 7% of US counties (USDA Forest Service Wildfire Risk to Communities, county-level).
What is the radon potential in Somonauk, IL?
High radon potential — EPA Zone 1 of 3, county-level. EPA recommends testing every home regardless of zone.
Are there Superfund sites near Somonauk, IL?
No current or proposed National Priorities List sites within 5 miles (EPA).
How many schools serve Somonauk, IL?
3 schools (1 elementary, 1 middle, 1 high) (NCES, 2024-25).
Is Somonauk, IL walkable?
Walkability index: 3.7/20 (EPA Smart Location Database).
What is the cost of living in Somonauk, IL?
Regional Price Parity: 100.0 (100 = US average) (Above Average) (BEA RPP, metro/state-level).

ZIP code for Somonauk

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Data last updated

Most recent source refresh: Oct 2026. See all data sources →

Data compiled by REAIGENT7 — AI listing platform for real estate agents