Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Kane County, Illinois
EPA puts Kane County in Zone 1, its highest radon zone, and 36.6% of its 8,682 reported radon tests (2017) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
36.6%
2.9 pts above IL
- Kane
- 36.6%
- Illinois
- 33.7%
8,682 tests, 2017
Median result
2.8pCi/L
Below action level
- Kane
- 2.8 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2017
Tests reported
8,682
5th of 70 by tests
- Kane
- 8,682
- Cook
- 26,937
Reported to CDC before any fix, 2017
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Illinois
47 of 70
Middle half
- Kane
- 36.6%
- Stark
- 69.2%
By share, of 70 with 30+ tests
Read a result for Kane County
Starts at Kane County's median, 2.8 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.8 pCi/L
Between 2 and 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Kane County's median reported result, 2017.
The data
Kane County, At a glance
Kane County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Kane County in
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Kane County, 2017
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 41.4% |
| 2015 | 43.2% |
| 2016 | 17.9% |
| 2017 | 36.6% |
2017: 36.6%. Across these years the share ran from 17.9% to 43.2%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 8,682 tests reported to CDC for Kane County over 2017, many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2017. Measured data period: 2005 to 2017 (every CDC figure on file).
Kane County, Compared
Kane County radon figures, compared
Calculated by Radon411In Kane County, about 4 in 10 reported tests in 2017 (3,180 of 8,682) were at or above EPA's action level. Against the national pool of 31.7%, the gap is 4.9 points higher. Across 93 Illinois counties pooled together, 33.7% of tests reached that level, so Kane County runs 2.9 points above its state.
Of 6 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 4 a smaller one; the spread is 19.4% (Cook County) to 41.1% (DeKalb County). By share, Kane County is 47th of 70 Illinois counties with 30 or more tests for the same period.
Year by year, 2014 opened at 41.4% and 2017 closed at 36.6% (down 4.8 points), with 2015 the high at 43.2%. Half the tests came in under 2.8 pCi/L and half over it; the single highest reached 111.0 pCi/L. Below the action level, 3,309 tests (38.1%) came in under 2 pCi/L, against 37.7% statewide, and 2,193 tests (25.3%) fell between 2 and 4, against 28.6% statewide.
Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 36.6% share point the same way here. USGS geology rates 100% of the county's land high radon potential.
The busiest year on file was 2014, with 12,345 tests reported; the quietest, 2016, had 201.
Kane CountyIllinois, pooled
| Year | Tests | Kane County, at or above 4 pCi/L | Illinois, pooled |
|---|---|---|---|
| 2014 | 12,345 | 41.4% | 37.8% |
| 2015 | 6,267 | 43.2% | 36.6% |
| 2016 | 201 | 17.9% | 17.4% |
| 2017 | 8,682 | 36.6% | 33.7% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Kane County, Geology
The ground under Kane County
PredictedUSGS's geologic map puts all of Kane County's mapped land in one class: high radon potential. 99.3% of it lies in the area the map calls Bloomington Ridged Plain, to which USGS gives a radon index of 13, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Bloomington Ridged Plain | Wisconsinan glacial deposits and loess over Paleozoic sedimentary rocks. | High | 13 | 99.3% |
| Galesburg Plain | Illinoian glacial deposits and loess over Paleozoic sedimentary rocks. | High | 13 | 0.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Kane County beside the ground around it
Kane County has more high-potential ground than Illinois as a whole: 100% of its land against 64.5%. Of the 6 counties that border it, none has as large a share of high-potential ground; DeKalb County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Kane County, Local resources
Radon testing and mitigation in Kane County
Listed radon businesses with an address in Kane County:
- IEMA-OHS Radon ProgramIEMA-OHS Radon Program, run by Illinois Emergency Management Agency and Office of Homeland Security, licenses or certifies radon professionals and states the rule for disclosing radon when a home is sold, and answers questions about testing and mitigation in Illinois.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- Professionals in Illinois339 professionals are listed in Illinois.
Listed radon professionals by town: Aurora, Elgin, Hoffman Estates, Carpentersville, Algonquin, Huntley, Batavia, South Elgin, North Aurora, Sugar Grove, West Dundee, Elburn, Wayne, Big Rock
What Illinois's program says
- Phone
- (800) 325-1245
- Licensing of radon professionals
The Agency also licenses and regulates the individuals who provide radon measurement and mitigation to the public.
- Disclosure when a home is sold or rented
Illinois Radon Awareness Act - This is the legislation that requires the seller to provide to the buyer of any interest in residential real property the IEMA-OHS pamphlet entitled "Radon Testing Guidelines for Real Estate Transactions" and the Illinois Disclosure of Information on Radon Hazards.
What it means
Kane County, Questions
Questions about radon in Kane County
Are radon levels high in Kane County?
In 2017, 36.6% of the radon tests reported to CDC for Kane County, Illinois were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.8 pCi/L. Of 70 Illinois counties with 30 or more tests for the same period, 46 reported a higher share; pooled, the state comes to 33.7%.
Which counties border Kane County?
Kane County borders 6 counties: DeKalb County, DuPage County, Kendall County, McHenry County, Cook County and Will County.
Products
Kane County, Products
Testing a home in Kane County
In Kane County, 36.6% of 8,682 tests reported to CDC in 2017 reached 4 pCi/L, against 33.7% pooled across Illinois. In Zone 1 the year-round level in Kane County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.
Test kits and monitors3
See every kit and monitor
Monitor
RM-65 rechargeable radon detector with a color screen and alarm
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Kane County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Kane County
Explore
Kane County, Bordering counties
Counties bordering Kane County
Calculated by Radon411- Radon levels in DeKalb CountyEPA zone 1
41.1%at or above 4 pCi/L
Median 3.3 pCi/L · 1,707 tests · 4.5 points above Kane County
- Radon levels in Will CountyEPA zone 2
40.0%at or above 4 pCi/L
Median 3.1 pCi/L · 10,776 tests · 3.4 points above Kane County
- Radon levels in McHenry CountyEPA zone 2
35.1%at or above 4 pCi/L
Median 2.9 pCi/L · 6,474 tests · 1.5 points below Kane County
- Radon levels in Kendall CountyEPA zone 1
35.0%at or above 4 pCi/L
Median 2.8 pCi/L · 3,045 tests · 1.6 points below Kane County
- Radon levels in DuPage CountyEPA zone 2
33.7%at or above 4 pCi/L
Median 2.7 pCi/L · 19,401 tests · 2.9 points below Kane County
- Radon levels in Cook CountyEPA zone 2
19.4%at or above 4 pCi/L
Median 1.9 pCi/L · 26,937 tests · 17.2 points below Kane County
Kane County, Cities and towns
Cities and towns in Kane County
The Census Bureau estimates 525,757 residents in Kane County for July 1, 2025, 9,393 more than in 2020 (+1.8%). Packed into its land, that is 1,012 people per square mile. Aurora, the largest place on its list (181,505 residents in all), extends beyond Kane County, so no share of the total is worked out for it. Testing is reported here more often than across the state: CDC's 8,682 reported tests for 2017 come to 16.5 for every 1,000 residents (2025 estimate), against 10.9 for Illinois.
From Aurora to Virgil, CDC publishes no figure by town: each reads Kane County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Auroraextends beyond Kane County | 181,505 | +0.7% | Counted whole |
| Elginextends beyond Kane County | 115,476 | +0.8% | Counted whole |
| Hoffman Estatesextends beyond Kane County | 50,858 | −2.9% | Counted whole |
| Bartlettextends beyond Kane County | 40,855 | −0.4% | Counted whole |
| Carpentersville | 37,045 | −2.2% | 7.0% |
| St. Charlesextends beyond Kane County | 33,594 | +1.6% | Counted whole |
| Algonquinextends beyond Kane County | 30,824 | +3.9% | Counted whole |
| Huntleyextends beyond Kane County | 29,132 | +4.9% | Counted whole |
| Bataviaextends beyond Kane County | 26,586 | +0.3% | Counted whole |
| South Elgin | 25,656 | +7.7% | 4.9% |
| Montgomeryextends beyond Kane County | 21,978 | +7.5% | Counted whole |
| Geneva | 21,138 | −0.9% | 4.0% |
Places in Kane County with a city page: 1 of 1
- North Aurora
- Pingree Grove
- Campton Hills
- Sugar Grove
- Hampshire
- Gilberts
- West Dundee
- Elburn
- Barrington Hills (part)
- East Dundee (part)
- Sleepy Hollow
- Wayne (part)
- Maple Park (part)
- Big Rock
- Lily Lake
- Burlington
- Kaneville
- Virgil
30 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. “(part)” marks a place that extends into another county. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Kane County is counted whole, so it has no share.
Kane County, Homes
Homes in Kane County
Of Kane County's 189,918 homes, 69% are detached houses, against 58% across Illinois; 12% are in buildings of five or more homes. Much of Kane County is recent building: 28% of its homes have gone up since 2000 and the middle year built is 1984, against 1970 for Illinois. Owners live in 76% of the occupied homes (Illinois: 67%), so for most households a test and a fix are their own to order.
| Homes | Kane County | Illinois |
|---|---|---|
| Housing units | 189,918 | 5,443,501 |
| Detached houses | 69% | 58% |
| In buildings of 5 or more | 12% | 22% |
| Mobile homes | 1% | 2% |
| Built before 1960 | 25% | 38% |
| Built since 2000 | 28% | 16% |
| Middle year built | 1984 | 1970 |
| Owner-occupied | 76% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.