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Radon Levels in Jackson County, Ohio

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

    Jackson
    41.7%
    Ohio
    52.3%

    48 tests, 2008 to 2017

  • Median result

    3.3pCi/L

    Below action level

    Jackson
    3.3 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    48

    76th of 79 by tests

    Jackson
    48
    Franklin
    16,142

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

  • Rank in Ohio

    63 of 79

    Lowest quarter

    Jackson
    41.7%
    Pickaway
    81.4%

    By share, of 79 with 30+ tests

Read a result for Jackson County

Starts at Jackson County's median, 3.3 pCi/L

3.3pCi/L

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

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 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. Jackson County's median reported result, 2008 to 2017.

The data

Jackson County, At a glance

Jackson County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Jackson County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

USGS geologic potential: Moderate across 89% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Jackson County, 2008 to 2017, laboratory

Reported results by concentration band, Jackson County, 2008 to 2017, laboratory
Under 2 pCi/L: 35%2 to 4 pCi/L: 23%4 pCi/L and above: 42%

Of 48 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Jackson County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L1735.4%
2 to 4 pCi/L1122.9%
4 pCi/L and above2041.7%
What these figures count

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).

How to read these figures

Jackson County, Compared

Jackson County radon figures, compared

Calculated by Radon411

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%.

Jackson County against Ohio, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Jackson County
Jackson County4841.7%3.3 pCi/LThis county
Ohio, pooled88 counties, pooled98,84052.3%Not pooled+10.6 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−6.0 points
Pickaway Countyhighest in the state18381.4%9.5 pCi/L+39.7 points
Cuyahoga Countylowest in the state10,09221.7%2.0 pCi/L−20.0 points
Ross County, OHborders it36867.1%7.0 pCi/L+25.4 points
Pike County, OHborders it5756.1%4.5 pCi/L+14.4 points
Scioto County, OHborders it7337.0%2.7 pCi/L−4.7 points
Gallia County, OHborders it2133.3%3.0 pCi/L−8.4 points
Lawrence County, OHborders it6630.3%2.5 pCi/L−11.4 points
Vinton County, OHborders it425.0%1.9 pCi/L−16.7 points
Where Jackson County's reported results fell, 2008 to 2017, laboratory, beside Ohio and the United States
ResultJackson County testsJackson County shareOhio shareU.S. shareAgainst Ohio
Under 2 pCi/L1735.4%23.1%39.6%+12.3 points
2 to 4 pCi/L1122.9%24.6%24.7%−1.7 points
4 pCi/L and above2041.7%52.3%35.7%−10.6 points
Jackson County ranked among the 79 Ohio counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Belmont County58 of 7969745.2%3.6 pCi/L
Fulton County59 of 796245.2%3.1 pCi/L
Guernsey County60 of 7911744.4%3.6 pCi/L
Medina County61 of 792,13943.4%3.5 pCi/L
Hardin County62 of 796743.3%3.4 pCi/L
Jackson County63 of 794841.7%3.3 pCi/L
Ottawa County64 of 7954140.3%2.9 pCi/L
Lucas County65 of 791,38140.2%3.0 pCi/L
Portage County66 of 791,66139.3%3.2 pCi/L
Summit County67 of 796,48638.7%3.1 pCi/L
Washington County68 of 7934938.1%3.1 pCi/L
Jackson County ten-year laboratory totals, against Ohio's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOhio, pooledChange from the row before
2008 to 20174841.7%3.3 pCi/L24.3 pCi/L52.3%+1.3 points
2007 to 20164740.4%3.5 pCi/L24.3 pCi/L52.8%−2.5 points
2006 to 20154942.9%3.6 pCi/L24.3 pCi/L52.9%+0.3 points
2005 to 20144742.6%3.6 pCi/L24.3 pCi/L52.4%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Jackson County, Geology

The ground under Jackson County

Predicted

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).

USGS's geologic areas under Jackson County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Unglaciated PlateauMississippian through Permian limestone, dolomite, and shale.Moderate1188.9%
Mississippian LimestoneMississippian limestone exhibiting high gamma radioactivity.High1411.1%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Jackson County beside the ground around it

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%.

Share of land by USGS radon potential: Jackson County, the 6 counties bordering it and Ohio
AreaEPA zoneLow potentialModerate potentialHigh potential
Jackson CountyZone 2None88.9%11.1%
Gallia CountyZone 2None100%None
Vinton CountyZone 2None80.7%19.3%
Scioto CountyZone 2None20.7%79.3%
Lawrence CountyZone 2None99.9%0.1%
Pike CountyZone 1None1.5%98.5%
Ross CountyZone 1NoneNone100%
Ohio88 counties, pooled by land areaVariesNone37.2%62.8%

The map rates the ground, not the air in any home.

What it means

Jackson County, Questions

Questions about radon in Jackson County

Are radon levels high in Jackson County?

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%.

Which counties border Jackson County?

Jackson County borders 6 counties: Gallia County, Vinton County, Scioto County, Lawrence County, Pike County and Ross County.

Products

Jackson County, Products

Testing a home in Jackson County

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 monitors3

See every kit and monitor

Best radon monitors for Jackson County homes, compared

Explore

Jackson County, Bordering counties

Counties bordering Jackson County

Calculated by Radon411

Jackson County, Cities and towns

Cities and towns in Jackson County

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.

The cities and towns in Jackson County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Jackson6,233−0.3%19.0%
Wellston5,488+1.3%16.7%
Oak Hill1,420+0.6%4.3%
Coalton446+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

Homes in Jackson County

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 in Jackson County, Ohio, 2019 to 2023
HomesJackson CountyOhio
Housing units14,4905,271,573
Detached houses72%69%
In buildings of 5 or more6%15%
Mobile homes18%4%
Built before 196034%38%
Built since 200021%16%
Middle year built19771970
Owner-occupied73%67%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.