Skip to content

Locations and reports

Radon Levels in Paulding County, Ohio

EPA puts Paulding County in Zone 2, its middle radon zone, and only 13 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Highest bordering

    59.6%

    Putnam County

    Putnam
    59.6%
    Allen
    41.8%

    3 of 4 neighbours have 30+ tests, 2008 to 2017

  • Nearest county

    48.6%

    Defiance County, 15 miles

    Defiance
    48.6%
    Ohio
    52.3%

    Share at 4+ pCi/L, 70 tests, 2008 to 2017

  • Ground above low

    100.0%

    0.1 pts above Ohio

    Paulding
    100.0%
    Ohio
    99.9%

    Share of land USGS rates moderate or high potential

  • Tests reported

    13

    Too few for a share

    Paulding
    13
    Needed
    30

    2008 to 2017, laboratory

  • 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

Read a result for Paulding County

Starts at EPA's action level

4.0pCi/L

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

EPA’s reading of 4.0 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.

The data

Paulding County, At a glance

Paulding County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Paulding 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 58% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

CDC holds 13 reported tests for Paulding County over the 2008 to 2017 laboratory totals, with a median of 3.2 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Paulding County beside the counties around it is how this page reads it.

What these figures count

Only 13 tests were reported to CDC for Paulding County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor 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

Paulding County, Compared

Paulding County radon figures, compared

Calculated by Radon411

CDC's largest figure for Paulding County rests on 13 tests over the 2008 to 2017 laboratory totals, 3 of them at or above 4 pCi/L, so each test moves its share by 7.7 points and no rank or comparison is drawn from it. Results reached as high as 13.8 pCi/L, with a middle value of 3.2 pCi/L.

Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Putnam County reported the largest share at or above 4 pCi/L, 59.6%, and Allen County, IN the smallest, 41.8%, with Defiance County at 48.6% between. Farther out, Henry County (31 miles away) at 61.8%, Allen County (34 miles away) at 56.7% and Mercer County (40 miles away) at 57.7% have figures too. Pooled across 88 Ohio counties, 52.3% of reported tests reached that level; across every county in the country with a figure, 35.7%.

Statewide for the same period, Pickaway County reported the highest share (81.4%) and Cuyahoga County the lowest (21.7%). EPA's 1993 map puts Paulding County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 58% of the county's land moderate radon potential.

Ohio, the United States and the counties around Paulding County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
Ohio, pooled88 counties, pooled98,84052.3%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Pickaway Countyhighest in the state18381.4%9.5 pCi/L
Cuyahoga Countylowest in the state10,09221.7%2.0 pCi/L
Putnam County, OHborders it9459.6%4.8 pCi/L
Van Wert County, OHborders it2653.8%4.3 pCi/L
Defiance County, OHborders it7048.6%3.8 pCi/L
Allen County, INborders it3,99041.8%3.3 pCi/L
The nearest Ohio counties to Paulding County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Defiance County15 mi7048.6%3.8 pCi/L
Putnam County24 mi9459.6%4.8 pCi/L
Henry County31 mi3461.8%5.3 pCi/L
Allen County34 mi23856.7%5.0 pCi/L
Mercer County40 mi14957.7%5.1 pCi/L
Fulton County41 mi6245.2%3.1 pCi/L
Auglaize County43 mi13971.2%6.5 pCi/L
Hancock County48 mi1,38246.2%3.7 pCi/L
Paulding County ten-year laboratory totals, against Ohio's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOhio, pooledChange from the row before
2008 to 20171323.1%3.2 pCi/L13.8 pCi/L52.3%−1.9 points
2007 to 20161225.0%3.3 pCi/L13.8 pCi/L52.8%Level
2006 to 20151225.0%3.3 pCi/L13.8 pCi/L52.9%Level
2005 to 20141225.0%3.3 pCi/L13.8 pCi/L52.4%First on file

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

Paulding County, Geology

The ground under Paulding County

Predicted

USGS's geologic map splits Paulding County: 57.6% of its land is moderate radon potential and 42.4% high. The map puts 57.6% of Paulding County in the area it calls Lake Plains and 42.4% in Till Plains. USGS gives the first a radon index of 10, in the moderate band (9 to 11), and the second 14, in the high band (12 to 17).

USGS's geologic areas under Paulding County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Lake PlainsGlacial lake deposits, Devonian shale and limestone.Moderate1057.6%
Till PlainsGlacial deposits underlain by Ordovician through Devonian limestone and shale.High1442.4%

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

Paulding County beside the ground around it

Ohio as a whole has more high-potential ground than Paulding County: 62.8% of its land, against 42.4% here. Every one of the 4 counties that border it has more high-potential ground, Allen County, IN the most at 100%.

Share of land by USGS radon potential: Paulding County, the 4 counties bordering it and Ohio
AreaEPA zoneLow potentialModerate potentialHigh potential
Paulding CountyZone 2None57.6%42.4%
Van Wert CountyZone 1None0.1%99.9%
Defiance CountyZone 2None37.4%62.6%
Putnam CountyZone 2None32.3%67.7%
Allen County, INZone 1NoneNone100%
Ohio88 counties, pooled by land areaVariesNone37.2%62.8%

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

What it means

Paulding County, Questions

Questions about radon in Paulding County

Are radon levels high in Paulding County?

Over the 2008 to 2017 laboratory totals, 23.1% of the radon tests reported to CDC for Paulding County, Ohio were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.2 pCi/L. Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Putnam County reported the largest share at or above 4 pCi/L, 59.6%, and Allen County, IN the smallest, 41.8%, with Defiance County at 48.6% between.

Which counties border Paulding County?

Paulding County borders 4 counties: Van Wert County, OH, Defiance County, OH, Putnam County, OH and Allen County, IN.

Products

Paulding County, Products

Testing a home in Paulding County

No CDC figure names Paulding County; the nearest county with one, Defiance County (15 miles away), reported 48.6% of its tests at or above 4 pCi/L over the 2008 to 2017 laboratory totals, the only reading nearby until a test of this home. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Paulding County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Paulding County homes, compared

Explore

Paulding County, Bordering counties

Counties bordering Paulding County

Calculated by Radon411

Paulding County, Cities and towns

Cities and towns in Paulding County

Paulding County's population has barely moved since 2020: 18,727 residents on July 1, 2025 against 18,809 then, by the Census Bureau's estimates. That works out to 45 people per square mile of land. No town dominates: Paulding, the largest, has 3,517 residents, 18.8% of the total. Reported testing is thin here: 13 tests over 2008 to 2017, or 0.7 for every 1,000 residents (2025 estimate), where Ohio as a whole comes to 8.3.

From Paulding to Broughton, CDC publishes no figure by town: each reads Paulding County's.

The cities and towns in Paulding County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Paulding3,517−0.7%18.8%
Antwerp1,679−0.1%9.0%
Payne1,188+0.3%6.3%
Oakwood536−2.2%2.9%
Grover Hill379−1.0%2.0%
Scottextends beyond Paulding County236−1.3%Counted whole
Melrose226−0.9%1.2%
Latty162−1.8%0.9%
Haviland158−1.9%0.8%
Cecil144Level0.8%
Broughton109−1.8%0.6%

11 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 Paulding County is counted whole, so it has no share.

Paulding County, Homes

Homes in Paulding County

Paulding County is a place of houses on their own lots: 85% of its 8,533 homes are detached single-family houses, against 69% across Ohio. Half of its homes were built before 1969, close to Ohio's 1970: 37% date from before 1960 and 14% from 2000 or later. Owners live in 80% of the occupied homes (Ohio: 67%), so for most households a test and a fix are their own to order.

Homes in Paulding County, Ohio, 2019 to 2023
HomesPaulding CountyOhio
Housing units8,5335,271,573
Detached houses85%69%
In buildings of 5 or more3%15%
Mobile homes7%4%
Built before 196037%38%
Built since 200014%16%
Middle year built19691970
Owner-occupied80%67%

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