Skip to content

Locations and reports

Radon Levels in Morton County, Kansas

EPA puts Morton County in Zone 2, its middle radon zone, and only 5 radon tests from it are on file with CDC (2022). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Nearest county

    52.2%

    Seward County, 52 miles

    Seward
    52.2%
    Kansas
    33.7%

    Share at 4+ pCi/L, 92 tests, 2019

  • Ground above low

    100.0%

    Level with Kansas

    Morton
    100.0%
    Kansas
    100.0%

    Share of land USGS rates moderate or high potential

  • Tests reported

    6

    Too few for a share

    Morton
    6
    Needed
    30

    2018

  • 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 Morton 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

Morton County, At a glance

Morton County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Morton 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 63% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Morton County, 2022

Share of reported tests at or above 4 pCi/L, by year, Morton County
Share of reported tests at or above 4 pCi/L, by year, Morton County
YearShare of reported tests at or above 4 pCi/L
201633.3%
201725.0%
201816.7%
20190.0%
20200.0%
202240.0%

2022: 40.0%. Across these years the share ran from 0.0% to 40.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 5 tests were reported to CDC for Morton County over 2022, 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: 2022. Measured data period: 2016 to 2022 (every CDC figure on file).

How to read these figures

Morton County, Compared

Morton County radon figures, compared

Calculated by Radon411

CDC's largest figure for Morton County rests on 6 tests in 2018, 1 of them at or above 4 pCi/L, so each test moves its share by 16.7 points and no rank or comparison is drawn from it. Results reached as high as 5.5 pCi/L, with a middle value of 2.9 pCi/L.

The nearest counties with a figure are Seward County (52 miles away) at 52.2%, Finney County (83 miles away) at 30.1% and Scott County (102 miles away) at 61.5%. Pooled across 102 Kansas counties, 33.7% of reported tests reached that level; across every county in the country with a figure, 29.0%.

Statewide for the same period, Jewell County reported the highest share (71.9%) and Reno County the lowest (20.8%). EPA's 1993 map puts Morton County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 63% of the county's land moderate radon potential.

Kansas, the United States and the counties around Morton County, 2019
AreaTestsAt or above 4 pCi/LMedian
Kansas, pooled102 counties, pooled24,17633.7%Not pooled
United States, pooled828 counties, pooled391,41229.0%Not pooled
Jewell Countyhighest in the state3271.9%7.4 pCi/L
Reno Countylowest in the state30320.8%2.0 pCi/L
Baca County, COborders it366.7%5.2 pCi/L
Stevens County, KSborders it2536.0%2.6 pCi/L
Stanton County, KSborders it10.0%3.9 pCi/L
The nearest Kansas counties to Morton County with 30 or more tests, 2019
CountyDistanceTestsAt or above 4 pCi/LMedian
Seward County52 mi9252.2%4.0 pCi/L
Finney County83 mi15630.1%3.0 pCi/L
Scott County102 mi3961.5%6.1 pCi/L
Ford County111 mi16542.4%3.3 pCi/L
Sherman County149 mi6358.7%4.6 pCi/L
Thomas County154 mi4445.5%3.8 pCi/L
Pawnee County156 mi3366.7%4.9 pCi/L
Ellis County180 mi20941.6%3.3 pCi/L
Morton County radon tests by year, against Kansas' pooled share
YearTestsAt or above 4 pCi/LMedianHighestKansas, pooledChange from the row before
2022540.0%3.4 pCi/L7.4 pCi/L32.0%+40.0 points
202040.0%1.9 pCi/L2.9 pCi/L31.3%Level
201940.0%1.6 pCi/L2.5 pCi/L33.7%−16.7 points
2018616.7%2.9 pCi/L5.5 pCi/L37.3%−8.3 points
2017425.0%3.3 pCi/L5.3 pCi/L37.3%−8.3 points
2016633.3%2.8 pCi/L5.9 pCi/L35.4%First on file

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

Morton County, Geology

The ground under Morton County

Predicted

USGS's geologic map splits Morton County: 63.3% of its land is moderate radon potential and 36.7% high. The map puts 63.3% of Morton County in the area it calls Cimmaron River Valley and 36.7% in Ogallala Formation. USGS gives the first a radon index of 10, in the moderate band (9 to 11), and the second 12, in the high band (12 to 17).

USGS's geologic areas under Morton County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Cimmaron River ValleyTertiary and Quaternary sandstone, siltstone, shale, and alluvium overlain by eolian sand and loess.Moderate1063.3%
Ogallala FormationTertiary sandstone, in part covered by windblown eolian sand and loess deposits.High1236.7%

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

Morton County beside the ground around it

Kansas as a whole has more high-potential ground than Morton County: 59.9% of its land, against 36.7% here. Of the 5 counties that border it, 2 have more high-potential ground, Stanton County the most at 100%.

Share of land by USGS radon potential: Morton County, the 5 counties bordering it and Kansas
AreaEPA zoneLow potentialModerate potentialHigh potential
Morton CountyZone 2None63.3%36.7%
Stanton CountyZone 1NoneNone100%
Stevens CountyZone 2None99.9%0.1%
Texas County, OKZone 2None100%None
Baca County, COZone 1None2.2%97.8%
Cimarron County, OKZone 2None78.9%21.1%
Kansas105 counties, pooled by land areaVariesNone40.1%59.9%

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

What it means

Morton County, Questions

Questions about radon in Morton County

Are radon levels high in Morton County?

In 2022, 40.0% of the radon tests reported to CDC for Morton County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.4 pCi/L. Of the 8 nearest counties with a figure, within 180 miles, the share of tests at or above 4 pCi/L runs from 30.1% to 66.7%.

Which counties border Morton County?

Morton County borders 5 counties: Stanton County, KS, Stevens County, KS, Texas County, OK, Baca County, CO and Cimarron County, OK.

Products

Morton County, Products

Testing a home in Morton County

No CDC figure names Morton County; the nearest county with one, Seward County (52 miles away), reported 52.2% of its tests at or above 4 pCi/L in 2019, 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 Morton County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Morton County homes, compared

Explore

Morton County, Bordering counties

Counties bordering Morton County

Calculated by Radon411

Morton County, Cities and towns

Cities and towns in Morton County

Morton County has been losing residents: from 2,697 in 2020 to 2,470 on July 1, 2025, a fall of 8.4% by the Census Bureau's estimates. Spread over its land, that is 3.4 people to the square mile. Elkhart alone is home to 1,722 of them, 69.7% of the total. Together its 3 incorporated places hold 85.1% of those residents; the other 14.9% live outside any of them. Reported testing is thin here: 6 tests over 2018, or 2.4 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 7.8.

From Elkhart to Richfield, CDC publishes no figure by town: each reads Morton County's.

The cities and towns in Morton County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Elkhart1,722−8.5%69.7%
Rolla353−8.3%14.3%
Richfield27−10.0%1.1%

3 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).

Morton County, Homes

Homes in Morton County

Morton County is a place of houses on their own lots: 84% of its 1,316 homes are detached single-family houses, against 72% across Kansas. Half of its homes were built before 1969, close to Kansas' 1975: 34% date from before 1960 and 6% from 2000 or later. Owners live in 78% of the occupied homes (Kansas: 67%), so for most households a test and a fix are their own to order.

Homes in Morton County, Kansas, 2019 to 2023
HomesMorton CountyKansas
Housing units1,3161,285,221
Detached houses84%72%
In buildings of 5 or more1%13%
Mobile homes5%4%
Built before 196034%33%
Built since 20006%20%
Middle year built19691975
Owner-occupied78%67%

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