
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
EPA puts Jackson County in Zone 2, its middle radon zone, and high results are common there: 41.7% of the 48 radon tests reported to CDC (2008 to 2017, laboratory totals) came back 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
41.7%
10.6 pts below OH
48 tests, 2008 to 2017
Median result
3.3pCi/L
Below action level
Midpoint of the tests, 2008 to 2017
Tests reported
48
76th of 79 by tests
Reported to CDC before any fix, 2008 to 2017
EPA radon zone
Zone 2
Moderate potential
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Ohio
63 of 79
Lowest quarter
By share, of 79 with 30+ tests
Read a result for Jackson County
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 3.3 pCi/L
Between 2 and 4 pCi/L
This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Jackson County's median reported result, 2008 to 2017.
The data
Jackson County, At a glance
Predicted: EPA radon zone
Jackson County is a
USGS geologic potential: Moderate across 89% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Of 48 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 17 | 35.4% |
| 2 to 4 pCi/L | 11 | 22.9% |
| 4 pCi/L and above | 20 | 41.7% |
These are the 48 tests reported to CDC for Jackson County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Jackson County, Compared
In Jackson County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (20 of 48) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 6.0 points higher. Across 88 Ohio counties pooled together, 52.3% of tests reached that level, so Jackson County runs 10.6 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 30.3% (Lawrence County) to 67.1% (Ross County). By share, Jackson County is 63rd of 79 Ohio counties with 30 or more tests for the same period.
Half the tests came in under 3.3 pCi/L and half over it; the single highest reached 24.3 pCi/L. Below the action level, 17 tests (35.4%) came in under 2 pCi/L, against 23.1% statewide, and 11 tests (22.9%) fell between 2 and 4, against 24.6% statewide.
Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 41.7% share point the same way here. USGS geology rates 89% of the county's land moderate radon potential.
CDC's ten-year totals for Jackson County went from 47 tests (2005 to 2014) to 48 (2008 to 2017), the share going from 42.6% to 41.7%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Jackson County, Geology
Most of the ground under Jackson County is one class on USGS's geologic map: 88.9% of its land is moderate radon potential, with 11.1% high. The map puts 88.9% of Jackson County in the area it calls Unglaciated Plateau and 11.1% in Mississippian Limestone. USGS gives the first a radon index of 11, in the moderate band (9 to 11), and the second 14, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Unglaciated Plateau | Mississippian through Permian limestone, dolomite, and shale. | Moderate | 11 | 88.9% |
| Mississippian Limestone | Mississippian limestone exhibiting high gamma radioactivity. | High | 14 | 11.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Ohio as a whole has more high-potential ground than Jackson County: 62.8% of its land, against 11.1% here. Of the 6 counties that border it, 4 have more high-potential ground, Ross County the most at 100%.
The map rates the ground, not the air in any home.
Local help
Jackson County, Local resources
Free radon test kits are available for Ohio homeowners.
This program licenses companies and persons directly involved with the radon testing and mitigation industry.
What it means
Jackson County, Questions
Over the 2008 to 2017 laboratory totals, 41.7% of the radon tests reported to CDC for Jackson County, Ohio were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.3 pCi/L. Of 79 Ohio counties with 30 or more tests for the same period, 62 reported a higher share; pooled, the state comes to 52.3%.
Jackson County borders 6 counties: Gallia County, Vinton County, Scioto County, Lawrence County, Pike County and Ross County.
Products
Jackson County, Products
In Jackson County, 41.7% of 48 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 52.3% pooled across Ohio. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Jackson County; a long-term test tells the year-round average.
Test kits and monitors: 1 of 3
Explore
Jackson County, Bordering counties
67.1%at or above 4 pCi/L
Median 7.0 pCi/L · 368 tests · 25.4 points above Jackson County
56.1%at or above 4 pCi/L
Median 4.5 pCi/L · 57 tests · 14.4 points above Jackson County
37.0%at or above 4 pCi/L
Median 2.7 pCi/L · 73 tests · 4.7 points below Jackson County
33.3%at or above 4 pCi/L
Median 3.0 pCi/L · 21 tests · 8.4 points below Jackson County
30.3%at or above 4 pCi/L
Median 2.5 pCi/L · 66 tests · 11.4 points below Jackson County
25.0%at or above 4 pCi/L
Median 1.9 pCi/L · 4 tests · 16.7 points below Jackson County
Jackson County, Cities and towns
Jackson County's population has barely moved since 2020: 32,817 residents on July 1, 2025 against 32,671 then, by the Census Bureau's estimates. That works out to 78 people per square mile of land. No town dominates: Jackson, the largest, has 6,233 residents, 19.0% of the total. Together its 4 incorporated places hold 41.4% of those residents; the other 58.6% live outside any of them. Reported testing is thin here: 48 tests over 2008 to 2017, or 1.5 for every 1,000 residents (2025 estimate), where Ohio as a whole comes to 8.3.
From Jackson to Coalton, CDC publishes no figure by town: each reads Jackson County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Jackson | 6,233 | −0.3% | 19.0% |
| Wellston | 5,488 | +1.3% | 16.7% |
| Oak Hill | 1,420 | +0.6% | 4.3% |
| Coalton | 446 | +0.5% | 1.4% |
4 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).
Jackson County, Homes
Of Jackson County's 14,490 homes, 72% are detached houses, against 69% across Ohio; 18% are mobile homes. Half of its homes were built before 1977, close to Ohio's 1970: 34% date from before 1960 and 21% from 2000 or later. 73% of occupied homes are lived in by their owner (Ohio: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Jackson County | Ohio |
|---|---|---|
| Housing units | 14,490 | 5,271,573 |
| Detached houses | 72% | 69% |
| In buildings of 5 or more | 6% | 15% |
| Mobile homes | 18% | 4% |
| Built before 1960 | 34% | 38% |
| Built since 2000 | 21% | 16% |
| Middle year built | 1977 | 1970 |
| Owner-occupied | 73% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.