Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
Radon Levels in Bond County, Illinois
EPA puts Bond County in Zone 2, its middle radon zone, and 32.0% of its 75 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
32.0%
1.7 pts below IL
- Bond
- 32.0%
- Illinois
- 33.7%
75 tests, 2017
Median result
2.6pCi/L
Below action level
- Bond
- 2.6 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2017
Tests reported
75
54th of 70 by tests
- Bond
- 75
- Cook
- 26,937
Reported to CDC before any fix, 2017
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Illinois
56 of 70
Lowest quarter
- Bond
- 32.0%
- Stark
- 69.2%
By share, of 70 with 30+ tests
Read a result for Bond County
Starts at Bond County's median, 2.6 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 2.6 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. Bond County's median reported result, 2017.
The data
Bond County, At a glance
Bond County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Bond County is a
USGS geologic potential: Moderate across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Bond County, 2017
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 55.6% |
| 2015 | 18.2% |
| 2017 | 32.0% |
2017: 32.0%. Across these years the share ran from 18.2% to 55.6%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 75 tests reported to CDC for Bond 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).
Bond County, Compared
Bond County radon figures, compared
Calculated by Radon411In Bond County, about 3 in 10 reported tests in 2017 (24 of 75) were at or above EPA's action level. Against the national pool of 31.7%, the gap is 0.3 points higher. Across 93 Illinois counties pooled together, 33.7% of tests reached that level, so Bond County runs 1.7 points below its state.
Of 4 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 26.3% (Fayette County) to 43.9% (Montgomery County). By share, Bond County is 56th of 70 Illinois counties with 30 or more tests for the same period.
Year by year, 2014 opened at 55.6% and 2017 closed at 32.0% (down 23.6 points), with 2014 the high at 55.6%. Half the tests came in under 2.6 pCi/L and half over it; the single highest reached 8.7 pCi/L. Below the action level, 30 tests (40.0%) came in under 2 pCi/L, against 37.7% statewide, and 21 tests (28.0%) fell between 2 and 4, against 28.6% statewide.
Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 32.0% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential.
The busiest year on file was 2014, with 81 tests reported; the quietest, 2015, had 33.
Bond CountyIllinois, pooled
| Year | Tests | Bond County, at or above 4 pCi/L | Illinois, pooled |
|---|---|---|---|
| 2014 | 81 | 55.6% | 37.8% |
| 2015 | 33 | 18.2% | 36.6% |
| 2017 | 75 | 32.0% | 33.7% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Bond County, Geology
The ground under Bond County
PredictedUSGS's geologic map puts all of Bond County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Southern Central Lowland Province, to which USGS gives a radon index of 9, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Southern Central Lowland Province | Illinoian glacial deposits, sandstone, and gray shale. | Moderate | 9 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Bond County beside the ground around it
Across Illinois 64.5% of the land is rated high; none of Bond County's is. Of the 4 counties that border it, 2 have more high-potential ground, Montgomery County the most at 11.2%.
The map rates the ground, not the air in any home.
Local help
Bond County, Local resources
Radon testing and mitigation in Bond County
Listed radon businesses with an address in Bond 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: Pocahontas
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
Bond County, Questions
Questions about radon in Bond County
Are radon levels high in Bond County?
In 2017, 32.0% of the radon tests reported to CDC for Bond County, Illinois were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.6 pCi/L. Of 70 Illinois counties with 30 or more tests for the same period, 55 reported a higher share; pooled, the state comes to 33.7%.
Which counties border Bond County?
Bond County borders 4 counties: Fayette County, Madison County, Montgomery County and Clinton County.
Products
Bond County, Products
Testing a home in Bond County
In Bond County, 32.0% of 75 tests reported to CDC in 2017 reached 4 pCi/L, against 33.7% pooled across Illinois. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Bond County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
MonitorAEGTEST
HOUND-1011S rechargeable radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 12 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Bond County, Bordering counties
Counties bordering Bond County
Calculated by Radon411- Radon levels in Montgomery CountyEPA zone 2
43.9%at or above 4 pCi/L
Median 3.3 pCi/L · 123 tests · 11.9 points above Bond County
- Radon levels in Clinton CountyEPA zone 2
37.6%at or above 4 pCi/L
Median 3.0 pCi/L · 582 tests · 5.6 points above Bond County
- Radon levels in Madison CountyEPA zone 2
29.5%at or above 4 pCi/L
Median 2.6 pCi/L · 5,214 tests · 2.5 points below Bond County
- Radon levels in Fayette CountyEPA zone 2
26.3%at or above 4 pCi/L
Median 2.5 pCi/L · 57 tests · 5.7 points below Bond County
Bond County, Cities and towns
Cities and towns in Bond County
The Census Bureau estimates 16,959 residents in Bond County for July 1, 2025, 100 more than in 2020 (+0.6%). That works out to 45 people per square mile of land. Its largest town, Greenville, has 7,469 residents, 44.0% of the total. Reported testing is thin here: 75 tests over 2017, or 4.4 for every 1,000 residents (2025 estimate), where Illinois as a whole comes to 10.9.
From Greenville to Old Ripley, CDC publishes no figure by town: each reads Bond County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Greenville | 7,469 | +3.3% | 44.0% |
| Pocahontas | 669 | −3.6% | 3.9% |
| Mulberry Grove | 498 | −4.0% | 2.9% |
| Pierronextends beyond Bond County | 442 | −3.7% | Counted whole |
| Sorento | 409 | −3.3% | 2.4% |
| Keyesportextends beyond Bond County | 404 | −1.0% | Counted whole |
| Panamaextends beyond Bond County | 325 | −1.8% | Counted whole |
| Donnellsonextends beyond Bond County | 152 | −1.9% | Counted whole |
| Smithboro | 149 | −3.9% | 0.9% |
| Old Ripley | 85 | +1.2% | 0.5% |
10 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025). A place that extends beyond Bond County is counted whole, so it has no share.
Bond County, Homes
Homes in Bond County
Of Bond County's 6,892 homes, 74% are detached houses, against 58% across Illinois; 14% are mobile homes. Half of its homes were built before 1974, close to Illinois' 1970: 35% date from before 1960 and 19% from 2000 or later. 74% of occupied homes are lived in by their owner (Illinois: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Bond County | Illinois |
|---|---|---|
| Housing units | 6,892 | 5,443,501 |
| Detached houses | 74% | 58% |
| In buildings of 5 or more | 7% | 22% |
| Mobile homes | 14% | 2% |
| Built before 1960 | 35% | 38% |
| Built since 2000 | 19% | 16% |
| Middle year built | 1974 | 1970 |
| Owner-occupied | 74% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.