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Radon Levels in Hughes County, Oklahoma

EPA puts Hughes County in Zone 3, its lowest radon zone, and only 2 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, 74 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

    Hughes
    0.0%
    Oklahoma
    15.2%

    Share of land USGS rates moderate or high potential

  • Tests reported

    2

    Too few for a share

    Hughes
    2
    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 Hughes 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

Hughes County, At a glance

Hughes County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Hughes 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 Hughes County, 2008 to 2017, laboratory

CDC holds 2 reported tests for Hughes County over the 2008 to 2017 laboratory totals, with a median of 1.1 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Hughes County beside the counties around it is how this page reads it.

What these figures count

Only 2 tests were reported to CDC for Hughes 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. Measured data period: 2008 to 2017.

How to read these figures

Hughes County, Compared

Hughes County radon figures, compared

Calculated by Radon411

CDC's largest figure for Hughes County rests on 2 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 50.0 points and no rank or comparison is drawn from it. Results reached as high as 2.1 pCi/L, with a middle value of 1.1 pCi/L.

The nearest counties with a figure are Oklahoma County (74 miles away) at 8.9%, Tulsa County (76 miles away) at 6.0% and Cherokee County (92 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 Hughes 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 Hughes 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
McIntosh County, OKborders it20.0%1.3 pCi/L
Pontotoc County, OKborders it30.0%0.6 pCi/L
The nearest Oklahoma counties to Hughes County with 30 or more tests, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Oklahoma County74 mi1358.9%0.9 pCi/L
Tulsa County76 mi3006.0%0.9 pCi/L
Cherokee County92 mi5032.0%1.9 pCi/L
Washington County117 mi5311.3%1.9 pCi/L
Delaware County124 mi3844.7%2.5 pCi/L

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

Hughes County, Geology

The ground under Hughes County

Predicted

USGS's geologic map puts all of Hughes 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 Hughes 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.

Hughes County beside the ground around it

Across Oklahoma 0.6% of the land is rated high; none of Hughes County's is. None of the 6 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Hughes County, the 6 counties bordering it and Oklahoma
AreaEPA zoneLow potentialModerate potentialHigh potential
Hughes CountyZone 3100%NoneNone
Seminole CountyZone 3100%NoneNone
Coal CountyZone 3100%NoneNone
Pittsburg CountyZone 3100%NoneNone
Pontotoc CountyZone 3100%NoneNone
Okfuskee CountyZone 3100%NoneNone
McIntosh 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

Hughes County, Questions

Questions about radon in Hughes County

Are radon levels high in Hughes County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Hughes County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.1 pCi/L. Of the 5 nearest counties with a figure, within 124 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.

Which counties border Hughes County?

Hughes County borders 6 counties: Seminole County, Coal County, Pittsburg County, Pontotoc County, Okfuskee County and McIntosh County.

Products

Hughes County, Products

Testing a home in Hughes County

No CDC figure names Hughes County; the nearest county with one, Oklahoma County (74 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 Hughes County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Hughes County homes, compared

Explore

Hughes County, Bordering counties

Counties bordering Hughes County

Calculated by Radon411

Hughes County, Cities and towns

Cities and towns in Hughes County

The Census Bureau estimates 13,455 residents in Hughes County for July 1, 2025, 107 more than in 2020 (+0.8%). That works out to 17 people per square mile of land. Its largest town, Holdenville, has 5,923 residents, 44.0% of the total. CDC's 2 reported tests for 2008 to 2017 work out to 0.1 per 1,000 residents (2025 estimate), close to Oklahoma's 0.2.

From Holdenville to Yeager, CDC publishes no figure by town: each reads Hughes County's.

The cities and towns in Hughes County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Holdenville5,923+0.1%44.0%
Wetumka1,133+0.2%8.4%
Allenextends beyond Hughes County804+0.8%Counted whole
Dustin339+2.1%2.5%
Calvin313+0.6%2.3%
Stuart197+1.0%1.5%
Spaulding155+1.3%1.2%
Lamar128+0.8%1.0%
Gerty97+2.1%0.7%
Horntown93+2.2%0.7%
Atwood85+2.4%0.6%
Yeager60+9.1%0.4%

12 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 Hughes County is counted whole, so it has no share.

Hughes County, Homes

Homes in Hughes County

Hughes County is a place of houses on their own lots: 77% of its 5,782 homes are detached single-family houses, against 73% across Oklahoma. The homes are older than Oklahoma's as a whole: half were built before 1972 (1980 for Oklahoma), and 39% date from before 1960. 73% 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 Hughes County, Oklahoma, 2019 to 2023
HomesHughes CountyOklahoma
Housing units5,7821,763,036
Detached houses77%73%
In buildings of 5 or more1%12%
Mobile homes15%9%
Built before 196039%21%
Built since 200016%25%
Middle year built19721980
Owner-occupied73%66%

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