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Radon Levels in Lawrence County, Ohio

EPA puts Lawrence County in Zone 2, its middle radon zone, and 30.3% of its 66 reported radon tests (2008 to 2017, laboratory totals) 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

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  • Share at 4+ pCi/L

    30.3%

    22.0 pts below OH

    Lawrence
    30.3%
    Ohio
    52.3%

    66 tests, 2008 to 2017

  • Median result

    2.5pCi/L

    Below action level

    Lawrence
    2.5 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    66

    71st of 79 by tests

    Lawrence
    66
    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

    75 of 79

    Lowest quarter

    Lawrence
    30.3%
    Pickaway
    81.4%

    By share, of 79 with 30+ tests

Read a result for Lawrence County

Starts at Lawrence County's median, 2.5 pCi/L

2.5pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 2.5 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. Lawrence County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Lawrence County, At a glance

Lawrence County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Lawrence 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 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Lawrence County, 2008 to 2017, laboratory
Under 2 pCi/L: 38%2 to 4 pCi/L: 32%4 pCi/L and above: 30%

Of 66 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Lawrence County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L2537.9%
2 to 4 pCi/L2131.8%
4 pCi/L and above2030.3%
What these figures count

These are the 66 tests reported to CDC for Lawrence 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

Lawrence County, Compared

Lawrence County radon figures, compared

Calculated by Radon411

In Lawrence County, about 3 in 10 reported tests over the 2008 to 2017 laboratory totals (20 of 66) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 5.4 points lower. Across 88 Ohio counties pooled together, 52.3% of tests reached that level, so Lawrence County runs 22.0 points below its state.

Of 5 neighbours with a figure, 2 reported a larger share at or above 4 pCi/L and 3 a smaller one; the spread is 12.5% (Greenup County, KY) to 41.7% (Jackson County). By share, Lawrence County is 75th of 79 Ohio counties with 30 or more tests for the same period.

Half the tests came in under 2.5 pCi/L and half over it; the single highest reached 13.9 pCi/L. Below the action level, 25 tests (37.9%) came in under 2 pCi/L, against 23.1% statewide, and 21 tests (31.8%) 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 30.3% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential.

CDC's ten-year totals for Lawrence County went from 63 tests (2005 to 2014) to 66 (2008 to 2017), the share going from 36.5% to 30.3%.

Lawrence County against Ohio, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Lawrence County
Lawrence County6630.3%2.5 pCi/LThis county
Ohio, pooled88 counties, pooled98,84052.3%Not pooled+22.0 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+5.4 points
Pickaway Countyhighest in the state18381.4%9.5 pCi/L+51.1 points
Cuyahoga Countylowest in the state10,09221.7%2.0 pCi/L−8.6 points
Jackson County, OHborders it4841.7%3.3 pCi/L+11.4 points
Scioto County, OHborders it7337.0%2.7 pCi/L+6.7 points
Gallia County, OHborders it2133.3%3.0 pCi/L+3.0 points
Boyd County, KYborders it16817.9%2.1 pCi/L−12.4 points
Cabell County, WVborders it14516.6%2.0 pCi/L−13.7 points
Wayne County, WVborders it1915.8%1.7 pCi/L−14.5 points
Greenup County, KYborders it10412.5%2.0 pCi/L−17.8 points
Where Lawrence County's reported results fell, 2008 to 2017, laboratory, beside Ohio and the United States
ResultLawrence County testsLawrence County shareOhio shareU.S. shareAgainst Ohio
Under 2 pCi/L2537.9%23.1%39.6%+14.8 points
2 to 4 pCi/L2131.8%24.6%24.7%+7.2 points
4 pCi/L and above2030.3%52.3%35.7%−22.0 points
Lawrence 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
Athens County69 of 7931838.1%3.1 pCi/L
Scioto County70 of 797337.0%2.7 pCi/L
Hamilton County71 of 793,75434.7%2.8 pCi/L
Trumbull County72 of 7942534.6%2.9 pCi/L
Ashtabula County73 of 7931434.4%2.5 pCi/L
Noble County74 of 794231.0%2.2 pCi/L
Lawrence County75 of 796630.3%2.5 pCi/L
Lake County76 of 792,34927.2%2.4 pCi/L
Mahoning County77 of 7966623.4%2.5 pCi/L
Geauga County78 of 791,46923.4%2.4 pCi/L
Cuyahoga County79 of 7910,09221.7%2.0 pCi/L
Lawrence County ten-year laboratory totals, against Ohio's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOhio, pooledChange from the row before
2008 to 20176630.3%2.5 pCi/L13.9 pCi/L52.3%−3.5 points
2007 to 20166533.8%2.5 pCi/L13.9 pCi/L52.8%−0.5 points
2006 to 20156734.3%2.5 pCi/L34.0 pCi/L52.9%−2.2 points
2005 to 20146336.5%2.6 pCi/L34.0 pCi/L52.4%First on file

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

Lawrence County, Geology

The ground under Lawrence County

Predicted

Most of the ground under Lawrence County is one class on USGS's geologic map: 99.9% of its land is moderate radon potential, with 0.1% high. All of it lies in the area the map calls Unglaciated Plateau, to which USGS gives a radon index of 11, in the moderate band (9 to 11).

USGS's geologic areas under Lawrence County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Unglaciated PlateauMississippian through Permian limestone, dolomite, and shale.Moderate1199.8%

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

Lawrence County beside the ground around it

Ohio as a whole has more high-potential ground than Lawrence County: 62.8% of its land, against 0.1% here. Of the 7 counties that border it, 3 have more high-potential ground, Scioto County the most at 79.3%.

Share of land by USGS radon potential: Lawrence County, the 7 counties bordering it and Ohio
AreaEPA zoneLow potentialModerate potentialHigh potential
Lawrence CountyZone 2None99.9%0.1%
Gallia CountyZone 2None100%None
Boyd County, KYZone 2None100%None
Greenup County, KYZone 2None99.5%0.5%
Cabell County, WVZone 2None100%None
Scioto CountyZone 2None20.7%79.3%
Jackson CountyZone 2None88.9%11.1%
Wayne County, WVZone 214.1%85.9%None
Ohio88 counties, pooled by land areaVariesNone37.2%62.8%

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

Local help

Lawrence County, Local resources

Radon testing and mitigation in Lawrence County

What Ohio's program says
Phone
614-728-0272
Email
indoor.radon@odh.ohio.gov
Licensing of radon professionals
This program licenses companies and persons directly involved with the radon testing and mitigation industry.

What it means

Lawrence County, Questions

Questions about radon in Lawrence County

Are radon levels high in Lawrence County?

Over the 2008 to 2017 laboratory totals, 30.3% of the radon tests reported to CDC for Lawrence County, Ohio were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.5 pCi/L. Of 79 Ohio counties with 30 or more tests for the same period, 74 reported a higher share; pooled, the state comes to 52.3%.

Which counties border Lawrence County?

Lawrence County borders 7 counties: Gallia County, OH, Boyd County, KY, Greenup County, KY, Cabell County, WV, Scioto County, OH, Jackson County, OH and Wayne County, WV.

Products

Lawrence County, Products

Testing a home in Lawrence County

In Lawrence County, 30.3% of 66 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 Lawrence County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Lawrence County homes, compared

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Lawrence County, Bordering counties

Counties bordering Lawrence County

Calculated by Radon411

Lawrence County, Cities and towns

Cities and towns in Lawrence County

About 55,710 people live in Lawrence County by the Census Bureau's estimate for July 1, 2025, 2,436 fewer than in 2020 (−4.2%). That works out to 123 people per square mile of land. No town dominates: Ironton, the largest, has 10,148 residents, 18.2% of the total. Together its 7 incorporated places hold 31.0% of those residents; the other 69.0% live outside any of them. Reported testing is thin here: 66 tests over 2008 to 2017, or 1.2 for every 1,000 residents (2025 estimate), where Ohio as a whole comes to 8.3.

From Ironton to Hanging Rock, CDC publishes no figure by town: each reads Lawrence County's.

The cities and towns in Lawrence County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Ironton10,148−4.1%18.2%
South Point3,640−4.7%6.5%
Coal Grove1,808−4.2%3.2%
Chesapeake719−4.9%1.3%
Proctorville494−5.2%0.9%
Athalia263−3.7%0.5%
Hanging Rock198−4.8%0.4%

7 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).

Lawrence County, Homes

Homes in Lawrence County

Of Lawrence County's 26,538 homes, 73% are detached houses, against 69% across Ohio; 16% are mobile homes. Half of its homes were built before 1974, close to Ohio's 1970: 31% date from before 1960 and 16% 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 Lawrence County, Ohio, 2019 to 2023
HomesLawrence CountyOhio
Housing units26,5385,271,573
Detached houses73%69%
In buildings of 5 or more3%15%
Mobile homes16%4%
Built before 196031%38%
Built since 200016%16%
Middle year built19741970
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.