
Short-term kitFirst Alert
RD1 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 2 to 4 days
Locations and reports
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
Share at 4+ pCi/L, 92 tests, 2019
Ground above low
100.0%
Level with Kansas
Share of land USGS rates moderate or high potential
Tests reported
6
Too few for a share
2018
EPA radon zone
Zone 2
Moderate potential
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Morton County
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
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
Predicted: EPA radon zone
Morton County is a
USGS geologic potential: Moderate across 63% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2016 | 33.3% |
| 2017 | 25.0% |
| 2018 | 16.7% |
| 2019 | 0.0% |
| 2020 | 0.0% |
| 2022 | 40.0% |
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.
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).
Morton County, Compared
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.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Morton County, Geology
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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Cimmaron River Valley | Tertiary and Quaternary sandstone, siltstone, shale, and alluvium overlain by eolian sand and loess. | Moderate | 10 | 63.3% |
| Ogallala Formation | Tertiary sandstone, in part covered by windblown eolian sand and loess deposits. | High | 12 | 36.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
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%.
The map rates the ground, not the air in any home.
Local help
Morton County, Local resources
What it means
Morton County, Questions
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%.
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
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 monitors: 1 of 3
Explore
Morton County, Bordering counties
66.7%at or above 4 pCi/L
Median 5.2 pCi/L · 3 tests
36.0%at or above 4 pCi/L
Median 2.6 pCi/L · 25 tests
0.0%at or above 4 pCi/L
Median 3.9 pCi/L · 1 test
No CDC figure for 2019; its page reads it against its own neighbours.
No CDC figure for 2019; its page reads it against its own neighbours.
Morton County, Cities and towns
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.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Elkhart | 1,722 | −8.5% | 69.7% |
| Rolla | 353 | −8.3% | 14.3% |
| Richfield | 27 | −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
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 | Morton County | Kansas |
|---|---|---|
| Housing units | 1,316 | 1,285,221 |
| Detached houses | 84% | 72% |
| In buildings of 5 or more | 1% | 13% |
| Mobile homes | 5% | 4% |
| Built before 1960 | 34% | 33% |
| Built since 2000 | 6% | 20% |
| Middle year built | 1969 | 1975 |
| Owner-occupied | 78% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.