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Radon Levels in Lincoln County, Oklahoma

EPA puts Lincoln County in Zone 3, its lowest radon zone, and only 4 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

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  • Highest bordering

    8.9%

    Oklahoma County

    Oklahoma
    8.9%

    1 of 6 neighbours have 30+ tests, 2006 to 2015

  • Nearest county

    8.9%

    Oklahoma County, 31 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

    Lincoln
    0.0%
    Oklahoma
    15.2%

    Share of land USGS rates moderate or high potential

  • Tests reported

    5

    Too few for a share

    Lincoln
    5
    Needed
    30

    2006 to 2015, 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 Lincoln 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.

Interpret this readingWhat a fix costs

The data

Lincoln County, At a glance

Lincoln County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

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

CDC holds 4 reported tests for Lincoln County over the 2008 to 2017 laboratory totals, with a median of 1.0 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Lincoln County beside the counties around it is how this page reads it.

What these figures count

Only 4 tests were reported to CDC for Lincoln 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

Lincoln County, Compared

Lincoln County radon figures, compared

Calculated by Radon411

CDC's largest figure for Lincoln County rests on 5 tests over the 2006 to 2015 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 20.0 points and no rank or comparison is drawn from it. Results reached as high as 2.0 pCi/L, with a middle value of 1.1 pCi/L.

Oklahoma County, the one bordering county with a figure over the 2006 to 2015 laboratory totals, reported 8.9% of its tests at or above 4 pCi/L. Farther out, Tulsa County (60 miles away) at 6.0%, Washington County (89 miles away) at 11.3% and Cherokee County (107 miles away) at 32.0% have figures too. 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 Lincoln 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 Lincoln 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
Oklahoma County, OKborders it1358.9%0.9 pCi/L
Payne County, OKborders it166.3%0.8 pCi/L
Creek County, OKborders it90.0%0.8 pCi/L
Logan County, OKborders it60.0%0.9 pCi/L
The nearest Oklahoma counties to Lincoln County with 30 or more tests, 2006 to 2015, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Oklahoma County31 mi1358.9%0.9 pCi/L
Tulsa County60 mi3006.0%0.9 pCi/L
Washington County89 mi5311.3%1.9 pCi/L
Cherokee County107 mi5032.0%1.9 pCi/L
Delaware County126 mi3844.7%2.5 pCi/L
Lincoln County ten-year laboratory totals, against Oklahoma's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestOklahoma, pooledChange from the row before
2008 to 201740.0%1.0 pCi/L1.2 pCi/L12.7%Level
2007 to 201640.0%1.0 pCi/L1.2 pCi/L12.1%Level
2006 to 201550.0%1.1 pCi/L2.0 pCi/L12.6%Level
2005 to 201450.0%1.1 pCi/L2.0 pCi/L12.0%First on file

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

Lincoln County, Geology

The ground under Lincoln County

Predicted

USGS's geologic map puts all of Lincoln 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 Lincoln 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.

Lincoln County beside the ground around it

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

Share of land by USGS radon potential: Lincoln County, the 6 counties bordering it and Oklahoma
AreaEPA zoneLow potentialModerate potentialHigh potential
Lincoln CountyZone 3100%NoneNone
Payne CountyZone 3100%NoneNone
Oklahoma CountyZone 3100%NoneNone
Creek CountyZone 3100%NoneNone
Pottawatomie CountyZone 3100%NoneNone
Logan CountyZone 3100%NoneNone
Okfuskee 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.

Local help

Lincoln County, Local resources

Radon testing and mitigation in Lincoln County

What it means

Lincoln County, Questions

Questions about radon in Lincoln County

Are radon levels high in Lincoln County?

Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Lincoln County, Oklahoma were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.0 pCi/L. Oklahoma County, the one bordering county with a figure over the 2006 to 2015 laboratory totals, reported 8.9% of its tests at or above 4 pCi/L.

Which counties border Lincoln County?

Lincoln County borders 6 counties: Payne County, Oklahoma County, Creek County, Pottawatomie County, Logan County and Okfuskee County.

Products

Lincoln County, Products

Testing a home in Lincoln County

No CDC figure names Lincoln County; the nearest county with one, Oklahoma County (31 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 Lincoln County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Lincoln County homes, compared

Explore

Lincoln County, Bordering counties

Counties bordering Lincoln County

Calculated by Radon411

Lincoln County, Cities and towns

Cities and towns in Lincoln County

Lincoln County is growing: the Census Bureau puts it at 35,278 residents on July 1, 2025, up 5.3% from 33,515 in 2020. That works out to 37 people per square mile of land. No town dominates: Chandler, the largest, has 2,963 residents, 8.4% of the total. CDC's 5 reported tests for 2006 to 2015 work out to 0.1 per 1,000 residents (2025 estimate), close to Oklahoma's 0.2.

From Chandler to Fallis, CDC publishes no figure by town: each reads Lincoln County's.

The 12 largest cities and towns in Lincoln County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Chandler2,963+4.1%8.4%
Stroudextends beyond Lincoln County2,913+6.5%Counted whole
Pragueextends beyond Lincoln County2,427+2.7%Counted whole
Meeker1,031+2.7%2.9%
Davenport861+6.3%2.4%
Wellston727+6.3%2.1%
Carney575+5.3%1.6%
Tryon404+5.2%1.1%
Agra330+5.8%0.9%
Warwick180+9.1%0.5%
Sparks120+5.3%0.3%
Kendrick96+3.2%0.3%
  • Fallis

13 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 Lincoln County is counted whole, so it has no share.

Lincoln County, Homes

Homes in Lincoln County

Of Lincoln County's 14,516 homes, 73% are detached houses, against 73% across Oklahoma; 22% are mobile homes. Half of its homes were built before 1985, close to Oklahoma's 1980: 18% date from before 1960 and 27% from 2000 or later. Owners live in 80% of the occupied homes (Oklahoma: 66%), so for most households a test and a fix are their own to order.

Homes in Lincoln County, Oklahoma, 2019 to 2023
HomesLincoln CountyOklahoma
Housing units14,5161,763,036
Detached houses73%73%
In buildings of 5 or more2%12%
Mobile homes22%9%
Built before 196018%21%
Built since 200027%25%
Middle year built19851980
Owner-occupied80%66%

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