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
Locations and reports
Radon Levels in Greeley County, Kansas
EPA puts Greeley County in Zone 1, its highest radon zone, and only 1 radon test from it is on file with CDC (2020). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
61.5%
Scott County, 49 miles
- Scott
- 61.5%
- Kansas
- 33.7%
Share at 4+ pCi/L, 39 tests, 2019
Ground above low
100.0%
Level with Kansas
- Greeley
- 100.0%
- Kansas
- 100.0%
Share of land USGS rates moderate or high potential
Tests reported
3
Too few for a share
- Greeley
- 3
- Needed
- 30
2016
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Read a result for Greeley 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
Greeley County, At a glance
Greeley County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Greeley County in
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Greeley County, 2020
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2016 | 100.0% |
| 2017 | 0.0% |
| 2018 | 0.0% |
| 2019 | 100.0% |
| 2020 | 100.0% |
2020: 100.0%. Across these years the share ran from 0.0% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 1 test was reported to CDC for Greeley County over 2020, 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: 2020. Measured data period: 2016 to 2020 (every CDC figure on file).
Greeley County, Compared
Greeley County radon figures, compared
Calculated by Radon411CDC's largest figure for Greeley County rests on 3 tests in 2016, 3 of them at or above 4 pCi/L, so each test moves its share by 33.3 points and no rank or comparison is drawn from it. Results reached as high as 4.6 pCi/L, with a middle value of 4.3 pCi/L.
The nearest counties with a figure are Scott County (49 miles away) at 61.5%, Sherman County (60 miles away) at 58.7% and Finney County (65 miles away) at 30.1%. 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 Greeley County in Zone 1, the map's highest label: a predicted county average above 4 pCi/L. USGS geology rates 100% of the county's land high radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Greeley County, Geology
The ground under Greeley County
PredictedUSGS's geologic map puts all of Greeley County's mapped land in one class: high radon potential. All of it lies in the area the map calls Ogallala Formation, to which USGS gives a radon index of 12, in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Ogallala Formation | Tertiary sandstone, in part covered by windblown eolian sand and loess deposits. | High | 12 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Greeley County beside the ground around it
Greeley County has more high-potential ground than Kansas as a whole: 100% of its land against 59.9%. Of the 6 counties that border it, none has as large a share of high-potential ground; Cheyenne County, CO comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Greeley County, Local resources
Radon testing and mitigation in Greeley 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
Greeley County, Questions
Questions about radon in Greeley County
Are radon levels high in Greeley County?
In 2020, 100.0% of the radon tests reported to CDC for Greeley County, Kansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 15.3 pCi/L. Of the 8 nearest counties with a figure, within 141 miles, the share of tests at or above 4 pCi/L runs from 30.1% to 66.7%.
Which counties border Greeley County?
Greeley County borders 6 counties: Wichita County, KS, Hamilton County, KS, Wallace County, KS, Prowers County, CO, Cheyenne County, CO and Kiowa County, CO.
Products
Greeley County, Products
Testing a home in Greeley County
No CDC figure names Greeley County; the nearest county with one, Scott County (49 miles away), reported 61.5% of its tests at or above 4 pCi/L in 2019, the only reading nearby until a test of this home. In Zone 1 the year-round level in Greeley County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.
Test kits and monitors3
See every kit and monitor
MonitorKidde
Radon Detector (RAB) battery digital radon detector with an alarm
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 12 hours
Short-term kit
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Greeley County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Greeley County
Explore
Greeley County, Bordering counties
Counties bordering Greeley County
Calculated by Radon411- Radon levels in Wallace County, KSEPA zone 1
100.0%at or above 4 pCi/L
Median 4.7 pCi/L · 1 test
- Radon levels in Prowers County, COEPA zone 1
75.0%at or above 4 pCi/L
Median 5.8 pCi/L · 16 tests
- Radon levels in Wichita County, KSEPA zone 1
33.3%at or above 4 pCi/L
Median 3.9 pCi/L · 3 tests
- Radon levels in Hamilton County, KSEPA zone 1
0.0%at or above 4 pCi/L
Median 3.1 pCi/L · 2 tests
- Radon levels in Cheyenne County, COEPA zone 1
0.0%at or above 4 pCi/L
Median 3.1 pCi/L · 1 test
- Radon levels in Kiowa County, COEPA zone 1
No CDC figure for 2019; its page reads it against its own neighbours.
Greeley County, Cities and towns
Cities and towns in Greeley County
Greeley County has been losing residents: from 1,276 in 2020 to 1,182 on July 1, 2025, a fall of 7.4% by the Census Bureau's estimates. Spread over its land, that is 1.5 people to the square mile. Tribune alone is home to 709 of them, 60.0% of the total. Together its 2 incorporated places hold 67.9% of those residents; the other 32.1% live outside any of them. Reported testing is thin here: 3 tests over 2016, or 2.5 for every 1,000 residents (2025 estimate), where Kansas as a whole comes to 5.8.
From Tribune to Horace, CDC publishes no figure by town: each reads Greeley County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Tribune | 709 | −7.4% | 60.0% |
| Horace | 93 | −6.1% | 7.9% |
2 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).
Greeley County, Homes
Homes in Greeley County
Greeley County is a place of houses on their own lots: 86% of its 622 homes are detached single-family houses, against 72% across Kansas. The homes are older than Kansas' as a whole: half were built before 1964 (1975 for Kansas), and 41% date from before 1960. 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 | Greeley County | Kansas |
|---|---|---|
| Housing units | 622 | 1,285,221 |
| Detached houses | 86% | 72% |
| In buildings of 5 or more | under 1% | 13% |
| Mobile homes | 10% | 4% |
| Built before 1960 | 41% | 33% |
| Built since 2000 | 7% | 20% |
| Middle year built | 1964 | 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.