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Radon Levels in Tuscarawas County, Ohio

EPA puts Tuscarawas County in Zone 1, its highest radon zone, and high results are common there: 66.4% of the 547 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

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    66.4%

    14.1 pts above OH

    Tuscarawas
    66.4%
    Ohio
    52.3%

    547 tests, 2008 to 2017

  • Median result

    5.6pCi/L

    Action level reached

    Tuscarawas
    5.6 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    547

    37th of 79 by tests

    Tuscarawas
    547
    Franklin
    16,142

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 1

    Highest potential

    1. Zone 1
    2. 2
    3. 3

    1 highest, 3 lowest

    EPA predicts over 4 pCi/L indoors

  • Rank in Ohio

    12 of 79

    Top quarter

    Tuscarawas
    66.4%
    Pickaway
    81.4%

    By share, of 79 with 30+ tests

Read a result for Tuscarawas County

Starts at Tuscarawas County's median, 5.6 pCi/L

5.6pCi/L

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

EPA’s reading of 5.6 pCi/L

At or above 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 at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. Tuscarawas County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Tuscarawas County, At a glance

Tuscarawas County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Tuscarawas County in and predicts an average indoor of greater than 4 pCi/L (greater than 150 Bq/m³) across the county. That is one forecast for the whole county, not a reading of any address in it; homes above EPA's turn up in all three zones.

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 Tuscarawas County, 2008 to 2017, laboratory

Reported results by concentration band, Tuscarawas County, 2008 to 2017, laboratory
Under 2 pCi/L: 17%2 to 4 pCi/L: 17%4 pCi/L and above: 66%

Of 547 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Tuscarawas County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L9116.6%
2 to 4 pCi/L9317.0%
4 pCi/L and above36366.4%
What these figures count

These are the 547 tests reported to CDC for Tuscarawas 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

Tuscarawas County, Compared

Tuscarawas County radon figures, compared

Calculated by Radon411

More than half: 66.4% of the 547 radon tests reported to CDC for Tuscarawas County over the 2008 to 2017 laboratory totals read at least 4 pCi/L. That places it 12th of 79 Ohio counties with 30 or more tests for the same period. That is 14.1 points above the 52.3% pooled from 88 Ohio counties.

The median result, 5.6 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 164.3 pCi/L. The rest split 16.6% under 2 pCi/L and 17.0% from 2 to 4 (Ohio: 23.1% and 24.6%). Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 66.4% share point the same way here.

No bordering county with a figure for the same period reported a higher share; the closest is Holmes County at 64.2%, the lowest Guernsey County at 44.4%. Statewide for the same period, Pickaway County reported the highest share (81.4%) and Cuyahoga County the lowest (21.7%).

CDC's ten-year totals for Tuscarawas County went from 524 tests (2005 to 2014) to 547 (2008 to 2017), the share going from 66.0% to 66.4%.

Nationally, every county with a figure for the same period pools to 35.7%; Tuscarawas County sits 30.7 points above it. CDC also counts 19 tests taken after mitigation in Tuscarawas County for the same period: tests in homes where a fix was already in.

Tuscarawas County against Ohio, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Tuscarawas County
Tuscarawas County54766.4%5.6 pCi/LThis county
Ohio, pooled88 counties, pooled98,84052.3%Not pooled−14.1 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−30.7 points
Pickaway Countyhighest in the state18381.4%9.5 pCi/L+15.0 points
Cuyahoga Countylowest in the state10,09221.7%2.0 pCi/L−44.7 points
Holmes County, OHborders it6764.2%5.8 pCi/L−2.2 points
Stark County, OHborders it3,31760.1%4.9 pCi/L−6.3 points
Coshocton County, OHborders it11258.9%5.1 pCi/L−7.5 points
Carroll County, OHborders it48657.4%4.8 pCi/L−9.0 points
Harrison County, OHborders it4450.0%4.1 pCi/L−16.4 points
Guernsey County, OHborders it11744.4%3.6 pCi/L−22.0 points
Where Tuscarawas County's reported results fell, 2008 to 2017, laboratory, beside Ohio and the United States
ResultTuscarawas County testsTuscarawas County shareOhio shareU.S. shareAgainst Ohio
Under 2 pCi/L9116.6%23.1%39.6%−6.5 points
2 to 4 pCi/L9317.0%24.6%24.7%−7.6 points
4 pCi/L and above36366.4%52.3%35.7%+14.1 points
Tuscarawas 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
Licking County7 of 794,69471.2%7.0 pCi/L
Auglaize County8 of 7913971.2%6.5 pCi/L
Champaign County9 of 7959671.1%6.8 pCi/L
Madison County10 of 7954967.4%5.7 pCi/L
Ross County11 of 7936867.1%7.0 pCi/L
Tuscarawas County12 of 7954766.4%5.6 pCi/L
Marion County13 of 7926565.3%6.4 pCi/L
Miami County14 of 7969065.2%6.1 pCi/L
Morrow County15 of 7917765.0%5.7 pCi/L
Holmes County16 of 796764.2%5.8 pCi/L
Darke County17 of 7927063.7%5.6 pCi/L
Tuscarawas County ten-year laboratory totals, against Ohio's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOhio, pooledChange from the row before
2008 to 201754766.4%5.6 pCi/L164.3 pCi/L52.3%−0.1 points
2007 to 201657066.5%5.5 pCi/L164.3 pCi/L52.8%+0.2 points
2006 to 201556766.3%5.5 pCi/L164.3 pCi/L52.9%+0.3 points
2005 to 201452466.0%5.5 pCi/L164.3 pCi/L52.4%First on file

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

Tuscarawas County, Geology

The ground under Tuscarawas County

Predicted

USGS's geologic map puts all of Tuscarawas County's mapped land in one class: high radon potential. All of it lies in the area the map calls Area of Elevated Radioactivity, to which USGS gives a radon index of 12, in the high band (12 to 17).

USGS's geologic areas under Tuscarawas County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Area of Elevated RadioactivityPennsylvanian shale, sandstone, coal, and limestone.High12100%

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

Tuscarawas County beside the ground around it

Tuscarawas County has more high-potential ground than Ohio as a whole: 100% of its land against 62.8%. Of the 6 counties that border it, none has as large a share of high-potential ground; Harrison County comes nearest at 100%.

Share of land by USGS radon potential: Tuscarawas County, the 6 counties bordering it and Ohio
AreaEPA zoneLow potentialModerate potentialHigh potential
Tuscarawas CountyZone 1NoneNone100%
Carroll CountyZone 1None11.8%88.2%
Holmes CountyZone 1NoneNone100%
Harrison CountyZone 1NoneNone100%
Coshocton CountyZone 1NoneNone100%
Stark CountyZone 1None56.2%43.8%
Guernsey CountyZone 1None14.3%85.7%
Ohio88 counties, pooled by land areaVariesNone37.2%62.8%

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

Local help

Tuscarawas County, Local resources

Radon testing and mitigation in Tuscarawas County

Listed radon businesses with an address in Tuscarawas County:

Listed radon professionals by town: Dover, Strasburg

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

Tuscarawas County, Questions

Questions about radon in Tuscarawas County

Are radon levels high in Tuscarawas County?

Over the 2008 to 2017 laboratory totals, 66.4% of the radon tests reported to CDC for Tuscarawas County, Ohio were at or above 4 pCi/L, and the median reported pre-mitigation result was 5.6 pCi/L. Of 79 Ohio counties with 30 or more tests for the same period, 11 reported a higher share; pooled, the state comes to 52.3%.

Which counties border Tuscarawas County?

Tuscarawas County borders 6 counties: Carroll County, Holmes County, Harrison County, Coshocton County, Stark County and Guernsey County.

Products

Tuscarawas County, Products

Testing a home in Tuscarawas County

In Tuscarawas County, 66.4% of 547 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 52.3% pooled across Ohio. In Zone 1 the year-round level in Tuscarawas 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

Tuscarawas County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Tuscarawas County

Explore

Tuscarawas County, Bordering counties

Counties bordering Tuscarawas County

Calculated by Radon411

Tuscarawas County, Cities and towns

Cities and towns in Tuscarawas County

About 92,373 people live in Tuscarawas County by the Census Bureau's estimate for July 1, 2025, 832 fewer than in 2020 (−0.9%). That works out to 163 people per square mile of land. No town dominates: New Philadelphia, the largest, has 17,424 residents, 18.9% of the total. CDC's 547 reported tests for 2008 to 2017 work out to 5.9 per 1,000 residents (2025 estimate), close to Ohio's 8.3.

From New Philadelphia to Stone Creek, CDC publishes no figure by town: each reads Tuscarawas County's.

The 12 largest cities and towns in Tuscarawas County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
New Philadelphia17,424−1.5%18.9%
Dover12,947−1.7%14.0%
Uhrichsville5,145−2.0%5.6%
Newcomerstown3,607−2.5%3.9%
Strasburg2,759+0.3%3.0%
Dennison2,665−1.1%2.9%
Sugarcreek2,334−2.4%2.5%
Gnadenhutten1,215−1.6%1.3%
Tuscarawas1,011−0.8%1.1%
Bolivar970−3.1%1.1%
Balticextends beyond Tuscarawas County848+0.5%Counted whole
Midvale654−2.1%0.7%
  • Mineral City
  • Port Washington
  • Barnhill
  • Roswell
  • Parral
  • Zoar
  • Stone Creek

19 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 Tuscarawas County is counted whole, so it has no share.

Tuscarawas County, Homes

Homes in Tuscarawas County

Of Tuscarawas County's 40,840 homes, 75% are detached houses, against 69% across Ohio; 9% are mobile homes. Half of its homes were built before 1970, close to Ohio's 1970: 41% date from before 1960 and 16% from 2000 or later. 69% 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 Tuscarawas County, Ohio, 2019 to 2023
HomesTuscarawas CountyOhio
Housing units40,8405,271,573
Detached houses75%69%
In buildings of 5 or more6%15%
Mobile homes9%4%
Built before 196041%38%
Built since 200016%16%
Middle year built19701970
Owner-occupied69%67%

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