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Radon Levels in Pontotoc County, Oklahoma

EPA puts Pontotoc County in Zone 3, its lowest radon zone, and only 3 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

  • Nearest county

    8.9%

    Oklahoma County, 70 miles

    Oklahoma
    8.9%
    Oklahoma
    12.6%

    Share at 4+ pCi/L, 135 tests, 2006 to 2015

  • Ground above low

    None

    15.2 pts below Oklahoma

    Pontotoc
    0.0%
    Oklahoma
    15.2%

    Share of land USGS rates moderate or high potential

  • Tests reported

    3

    Too few for a share

    Pontotoc
    3
    Needed
    30

    2008 to 2017, laboratory

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for Pontotoc 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

Pontotoc County, At a glance

Pontotoc County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Pontotoc County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

USGS geologic potential: Low across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

CDC holds 3 reported tests for Pontotoc County over the 2008 to 2017 laboratory totals, with a median of 0.6 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Pontotoc County beside the counties around it is how this page reads it.

What these figures count

Only 3 tests were reported to CDC for Pontotoc 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

Pontotoc County, Compared

Pontotoc County radon figures, compared

Calculated by Radon411

CDC's largest figure for Pontotoc County rests on 3 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 33.3 points and no rank or comparison is drawn from it. Results reached as high as 0.8 pCi/L, with a middle value of 0.6 pCi/L.

The nearest counties with a figure are Oklahoma County (70 miles away) at 8.9%, Tulsa County (105 miles away) at 6.0% and Cherokee County (125 miles away) at 32.0%. Pooled across 53 Oklahoma counties, 12.6% of reported tests reached that level; across every county in the country with a figure, 36.3%.

Statewide for the same period, Delaware County reported the highest share (44.7%) and Tulsa County the lowest (6.0%). EPA's 1993 map puts Pontotoc County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.

Oklahoma, the United States and the counties around Pontotoc County, 2006 to 2015, laboratory
AreaTestsAt or above 4 pCi/LMedian
Oklahoma, pooled53 counties, pooled86012.6%Not pooled
United States, pooled2,669 counties, pooled1,805,52836.3%Not pooled
Delaware Countyhighest in the state3844.7%2.5 pCi/L
Tulsa Countylowest in the state3006.0%0.9 pCi/L
Pottawatomie County, OKborders it119.1%0.1 pCi/L
Garvin County, OKborders it10.0%1.9 pCi/L
McClain County, OKborders it30.0%1.5 pCi/L
The nearest Oklahoma counties to Pontotoc County with 30 or more tests, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Oklahoma County70 mi1358.9%0.9 pCi/L
Tulsa County105 mi3006.0%0.9 pCi/L
Cherokee County125 mi5032.0%1.9 pCi/L
Washington County144 mi5311.3%1.9 pCi/L
Delaware County157 mi3844.7%2.5 pCi/L
Pontotoc County ten-year laboratory totals, against Oklahoma's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOklahoma, pooledChange from the row before
2008 to 201730.0%0.6 pCi/L0.8 pCi/L12.7%Level
2007 to 201630.0%0.6 pCi/L0.8 pCi/L12.1%Level
2006 to 201530.0%0.6 pCi/L0.8 pCi/L12.6%Level
2005 to 201430.0%0.6 pCi/L0.8 pCi/L12.0%First on file

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

Pontotoc County, Geology

The ground under Pontotoc County

Predicted

USGS's geologic map puts all of Pontotoc County's mapped land in one class: low radon potential. All of it lies in the area the map calls Central Oklahoma Plains and Hills, to which USGS gives a radon index of 7, in the low band (5 to 8).

USGS's geologic areas under Pontotoc County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Central Oklahoma Plains and HillsNonmarine Permian and Tertiary rocks, including shale, sandstone, and conglomerate in the western part, and Mississippian and Pennsylvanian rocks in the eastern part.Low7100%

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

Pontotoc County beside the ground around it

Across Oklahoma 0.6% of the land is rated high; none of Pontotoc County's is. None of the 8 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Pontotoc County, the 8 counties bordering it and Oklahoma
AreaEPA zoneLow potentialModerate potentialHigh potential
Pontotoc CountyZone 3100%NoneNone
Coal CountyZone 3100%NoneNone
Hughes CountyZone 3100%NoneNone
Murray CountyZone 3100%NoneNone
Johnston CountyZone 3100%NoneNone
Seminole CountyZone 3100%NoneNone
Garvin CountyZone 3100%NoneNone
Pottawatomie CountyZone 3100%NoneNone
McClain CountyZone 3100%NoneNone
Oklahoma77 counties, pooled by land areaVaries84.8%14.6%0.6%

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

What it means

Pontotoc County, Questions

Questions about radon in Pontotoc County

Are radon levels high in Pontotoc County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Pontotoc County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.6 pCi/L. Of the 5 nearest counties with a figure, within 157 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.

Which counties border Pontotoc County?

Pontotoc County borders 8 counties: Coal County, Hughes County, Murray County, Johnston County, Seminole County, Garvin County, Pottawatomie County and McClain County.

Products

Pontotoc County, Products

Testing a home in Pontotoc County

No CDC figure names Pontotoc County; the nearest county with one, Oklahoma County (70 miles away), reported 8.9% of its tests at or above 4 pCi/L over the 2006 to 2015 laboratory totals, the only reading nearby until a test of this home. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Pontotoc County.

Explore

Pontotoc County, Bordering counties

Counties bordering Pontotoc County

Calculated by Radon411

Pontotoc County, Cities and towns

Cities and towns in Pontotoc County

The Census Bureau estimates 38,528 residents in Pontotoc County for July 1, 2025, 437 more than in 2020 (+1.1%). That works out to 53 people per square mile of land. Its largest town, Ada, has 16,660 residents, 43.2% of the total. Reported testing is thin here: 3 tests over 2008 to 2017, or 0.1 for every 1,000 residents (2025 estimate), where Oklahoma as a whole comes to 0.2.

From Ada to Fitzhugh, CDC publishes no figure by town: each reads Pontotoc County's.

The cities and towns in Pontotoc County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Ada16,660+1.0%43.2%
Byng1,414+1.3%3.7%
Allenextends beyond Pontotoc County804+0.8%Counted whole
Roff628−0.6%1.6%
Stonewall420+1.4%1.1%
Francis257+2.8%0.7%
Fitzhugh186+2.2%0.5%

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). A place that extends beyond Pontotoc County is counted whole, so it has no share.

Pontotoc County, Homes

Homes in Pontotoc County

Pontotoc County is a place of houses on their own lots: 77% of its 17,483 homes are detached single-family houses, against 73% across Oklahoma. Half of its homes were built before 1977, close to Oklahoma's 1980: 23% date from before 1960 and 23% from 2000 or later. 66% of occupied homes are lived in by their owner (Oklahoma: 66%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Pontotoc County, Oklahoma, 2019 to 2023
HomesPontotoc CountyOklahoma
Housing units17,4831,763,036
Detached houses77%73%
In buildings of 5 or more6%12%
Mobile homes9%9%
Built before 196023%21%
Built since 200023%25%
Middle year built19771980
Owner-occupied66%66%

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