Short-term kitempowerDX
Standard Radon Test short-term mail-in radon test kit
- Lab fee included
Method: Passive sampler
In home: 48 to 96 hours
Locations and reports
Radon Levels in Comanche County, Kansas
EPA puts Comanche County in Zone 2, its middle radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
42.4%
Ford County, 48 miles
- Ford
- 42.4%
- Kansas
- 33.7%
Share at 4+ pCi/L, 165 tests, 2019
Ground above low
99.8%
0.2 pts below Kansas
- Comanche
- 99.8%
- Kansas
- 100.0%
Share of land USGS rates moderate or high potential
Tests reported
0
None published
A home here needs its own test
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Comanche County
Starts at EPA's action level
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
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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
Comanche County, At a glance
Comanche County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Comanche County is a
USGS geologic potential: Moderate across 68% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
No CDC test figures here
CDC has published no radon test figures for Comanche County. Ford County, 48 miles away, is the nearest county with a figure in 2019.
Comanche County, Compared
Comanche County radon figures, compared
Calculated by Radon411CDC's county radon counts in 2019 cover 102 Kansas counties, and Comanche County is not among them: no year's figure and no ten-year laboratory total names it. Pooled across 102 Kansas counties, 33.7% of reported tests reached that level; across every county in the country with a figure, 29.0%.
The nearest counties with a figure are Ford County (48 miles away) at 42.4%, Pawnee County (68 miles away) at 66.7% and Reno County (84 miles away) at 20.8%. 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 Comanche County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 68% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Comanche County, Geology
The ground under Comanche County
PredictedUSGS's geologic map splits Comanche County: 68.3% of its land is moderate radon potential and 31.5% high and 0.2% low. The map puts 68.3% of Comanche County in the area it calls Glaciated Area and 31.5% in Ogallala Formation. USGS gives the first a radon index of 9, 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 |
|---|---|---|---|---|
| Glaciated Area | Glacial till underlain by Pennsylvanian and Permian marine and nonmarine sedimentary shale, sandstone, limestone, coal. | Moderate | 9 | 68.3% |
| Ogallala Formation | Tertiary sandstone, in part covered by windblown eolian sand and loess deposits. | High | 12 | 31.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Comanche County beside the ground around it
Kansas as a whole has more high-potential ground than Comanche County: 59.9% of its land, against 31.5% here. Of the 5 counties that border it, 2 have more high-potential ground, Kiowa County the most at 60.9%.
The map rates the ground, not the air in any home.
Local help
Comanche County, Local resources
Radon testing and mitigation in Comanche County
- Kansas Radon ProgramKansas Radon Program answers questions about testing, mitigation and the rules in Kansas.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- Professionals in Kansas178 professionals are listed in Kansas.
What Kansas's program says
- Phone
- (800) 693-5343
What it means
Comanche County, Questions
Questions about radon in Comanche County
Are radon levels high in Comanche County?
No CDC testing statistics are published here for Comanche County, Kansas yet. Of the 8 nearest counties with a figure, within 100 miles, the share of tests at or above 4 pCi/L runs from 20.8% to 66.7%.
Which counties border Comanche County?
Comanche County borders 5 counties: Kiowa County, KS, Clark County, KS, Barber County, KS, Harper County, OK and Woods County, OK.
Products
Comanche County, Products
Testing a home in Comanche County
No CDC figure names Comanche County; the nearest county with one, Ford County (48 miles away), reported 42.4% 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 Comanche County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
MonitorAEGTEST
HOUND-1011 rechargeable radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Comanche County, Bordering counties
Counties bordering Comanche County
Calculated by Radon411- Radon levels in Kiowa County, KSEPA zone 1
0.0%at or above 4 pCi/L
Median 3.8 pCi/L · 1 test
- Radon levels in Clark County, KSEPA zone 2
0.0%at or above 4 pCi/L
Median 1.5 pCi/L · 1 test
- Radon levels in Barber County, KSEPA zone 2
0.0%at or above 4 pCi/L
Median 1.6 pCi/L · 7 tests
- Radon levels in Harper County, OKEPA zone 3
No CDC figure for 2019; its page reads it against its own neighbours.
- Radon levels in Woods County, OKEPA zone 3
No CDC figure for 2019; its page reads it against its own neighbours.
Comanche County, Cities and towns
Cities and towns in Comanche County
Comanche County's population has barely moved since 2020: 1,673 residents on July 1, 2025 against 1,679 then, by the Census Bureau's estimates. Spread over its land, that is 2.1 people to the square mile. Its largest town, Coldwater, has 679 residents, 40.6% of the total. Together its 3 incorporated places hold 72.0% of those residents; the other 28.0% live outside any of them. CDC publishes no radon test count for Comanche County; across Kansas its counts for 2019 come to 8.1 tests for every 1,000 residents (2025 estimate).
From Coldwater to Wilmore, CDC publishes no figure by town: each reads Comanche County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Coldwater | 679 | −0.6% | 40.6% |
| Protection | 492 | Level | 29.4% |
| Wilmore | 33 | −5.7% | 2.0% |
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).
Comanche County, Homes
Homes in Comanche County
Comanche County is a place of houses on their own lots: 90% of its 1,050 homes are detached single-family houses, against 72% across Kansas. The homes are older than Kansas' as a whole: half were built before 1942 (1975 for Kansas), and 66% date from before 1960. 73% of occupied homes are lived in by their owner (Kansas: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Comanche County | Kansas |
|---|---|---|
| Housing units | 1,050 | 1,285,221 |
| Detached houses | 90% | 72% |
| In buildings of 5 or more | 3% | 13% |
| Mobile homes | 3% | 4% |
| Built before 1960 | 66% | 33% |
| Built since 2000 | 5% | 20% |
| Middle year built | 1942 | 1975 |
| Owner-occupied | 73% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.