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 Crowley County, Colorado
EPA puts Crowley County in Zone 1, its highest radon zone, and only 2 radon tests from it are on file with CDC (2021). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
70.1%
Pueblo County
- Pueblo
- 70.1%
- El Paso
- 42.1%
3 of 5 neighbours have 30+ tests, 2008 to 2017
Nearest county
57.9%
Otero County, 29 miles
- Otero
- 57.9%
- Colorado
- 47.0%
Share at 4+ pCi/L, 57 tests, 2008 to 2017
Ground above low
100.0%
Level with Colorado
- Crowley
- 100.0%
- Colorado
- 100.0%
Share of land USGS rates moderate or high potential
Tests reported
10
Too few for a share
- Crowley
- 10
- Needed
- 30
2020
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 Crowley 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
Crowley County, At a glance
Crowley County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Crowley 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 Crowley County, 2021
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 0.0% |
| 2017 | 0.0% |
| 2019 | 50.0% |
| 2020 | 50.0% |
| 2021 | 0.0% |
2021: 0.0%. Across these years the share ran from 0.0% to 50.0%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 2 tests were reported to CDC for Crowley County over 2021, 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: 2021. Measured data period: 2005 to 2021 (every CDC figure on file).
Crowley County, Compared
Crowley County radon figures, compared
Calculated by Radon411CDC's largest figure for Crowley County rests on 10 tests in 2020, 5 of them at or above 4 pCi/L, so each test moves its share by 10.0 points and no rank or comparison is drawn from it. Results reached as high as 8.3 pCi/L, with a middle value of 4.1 pCi/L.
Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Pueblo County reported the largest share at or above 4 pCi/L, 70.1%, and El Paso County the smallest, 42.1%, with Otero County at 57.9% between. Farther out, Bent County (47 miles away) at 59.4%, Elbert County (69 miles away) at 42.9% and Las Animas County (71 miles away) at 61.9% have figures too. Pooled across 63 Colorado counties, 47.0% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, Kit Carson County reported the highest share (71.4%) and Alamosa County the lowest (26.6%). EPA's 1993 map puts Crowley 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.
Crowley County, State data
Colorado's own radon test data
MeasuredWhat Colorado's own agencies publish about radon tests in Crowley County, with their period. These are not CDC's figures and are never added to them.
MeasuredState figures, not CDC's
What Colorado CDPHE reports for Crowley County
Radon data (county results): radon test results received from radon testing labs, primarily short-term household tests taken by the homeowner. Period: 2005-2025.
Share over 4 pCi/L
45%
9 of 20 tests
Median result
3.5 pCi/L
Highest result
9.6 pCi/L
Tests behind these figures
20 tests
- CDPHE says these data do not give actual radon levels in homes that have not been tested.
- When possible, only tests conducted before a mitigation system was installed are used.
- Some counties have very small numbers of test results, and their summaries may be less representative.
- These figures describe tests reported to Colorado CDPHE in this area. They count a different set of tests than CDC's figures and are not a reading of any one home.
Measured: Colorado CDPHE data, 2005-2025.
Crowley County, Geology
The ground under Crowley County
PredictedUSGS's geologic map puts all of Crowley County's mapped land in one class: high radon potential. All of it lies in the area the map calls High Plains, 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 |
|---|---|---|---|---|
| High Plains | Quaternary deposits and Cretaceous marine shales that locally have a high radiometric signature. | 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.
Crowley County beside the ground around it
Crowley County has more high-potential ground than Colorado as a whole: 100% of its land against 74.8%. Of the 5 counties that border it, none has as large a share of high-potential ground; El Paso County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Crowley County, Local resources
Radon testing and mitigation in Crowley County
- Colorado's radon programColorado Department of Public Health and EnvironmentColorado's radon program licenses or certifies radon professionals, offers free or discounted test kits and states the rule for disclosing radon when a home is sold, and answers questions about testing and mitigation in Colorado.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Order a discounted radon test kit
- Compare kits
- Professionals in Colorado25 professionals are listed in Colorado.
What Colorado's program says
- Licensing of radon professionals
Listed contractors are certified by the National Radon Proficiency Program or the National Radon Safety Board, and must be licensed by the Colorado Department of Regulatory Agencies.
- Disclosure when a home is sold or rented
As of August 7, 2023, landlords in Colorado are required to disclose radon information when a tenant signs a lease agreement.
What it means
Crowley County, Questions
Questions about radon in Crowley County
Are radon levels high in Crowley County?
In 2021, 0.0% of the radon tests reported to CDC for Crowley County, Colorado were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.5 pCi/L. Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Pueblo County reported the largest share at or above 4 pCi/L, 70.1%, and El Paso County the smallest, 42.1%, with Otero County at 57.9% between.
Which counties border Crowley County?
Crowley County borders 5 counties: Otero County, Pueblo County, Kiowa County, El Paso County and Lincoln County.
Products
Crowley County, Products
Testing a home in Crowley County
No CDC figure names Crowley County; the nearest county with one, Otero County (29 miles away), reported 57.9% of its tests at or above 4 pCi/L over the 2008 to 2017 laboratory totals, the only reading nearby until a test of this home. In Zone 1 the year-round level in Crowley 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
Monitor
EcoQube Wi-Fi continuous radon monitor
- C-NRPP 2024/25: Approved
- Plug-in
- Wi-Fi
- App only
Method: Ion chamber
First reading: Within 10 minutes
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
Crowley County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Crowley County
Explore
Crowley County, Bordering counties
Counties bordering Crowley County
Calculated by Radon411- Radon levels in Pueblo CountyEPA zone 1
70.1%at or above 4 pCi/L
Median 6.2 pCi/L · 3,524 tests
- Radon levels in Kiowa CountyEPA zone 1
63.6%at or above 4 pCi/L
Median 5.8 pCi/L · 11 tests
- Radon levels in Otero CountyEPA zone 1
57.9%at or above 4 pCi/L
Median 4.6 pCi/L · 57 tests
- Radon levels in Lincoln CountyEPA zone 1
50.0%at or above 4 pCi/L
Median 4.0 pCi/L · 16 tests
- Radon levels in El Paso CountyEPA zone 1
42.1%at or above 4 pCi/L
Median 3.2 pCi/L · 8,520 tests
Crowley County, Cities and towns
Cities and towns in Crowley County
About 5,677 people live in Crowley County by the Census Bureau's estimate for July 1, 2025, 30 fewer than in 2020 (−0.5%). Spread over its land, that is 7.2 people to the square mile. No town dominates: Ordway, the largest, has 1,053 residents, 18.5% of the total. Together its 4 incorporated places hold 30.5% of those residents; the other 69.5% live outside any of them. Reported testing is thin here: 10 tests over 2020, or 1.8 for every 1,000 residents (2025 estimate), where Colorado as a whole comes to 4.1.
From Ordway to Crowley, CDC publishes no figure by town: each reads Crowley County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Ordway | 1,053 | −0.9% | 18.5% |
| Olney Springs | 288 | −7.4% | 5.1% |
| Sugar City | 238 | −6.7% | 4.2% |
| Crowley | 155 | −7.2% | 2.7% |
4 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).
Crowley County, Homes
Homes in Crowley County
Of Crowley County's 1,535 homes, 73% are detached houses, against 62% across Colorado; 18% are mobile homes. The homes are older than Colorado's as a whole: half were built before 1965 (1987 for Colorado), and 47% date from before 1960. 66% of occupied homes are lived in by their owner (Colorado: 66%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Crowley County | Colorado |
|---|---|---|
| Housing units | 1,535 | 2,545,124 |
| Detached houses | 73% | 62% |
| In buildings of 5 or more | 3% | 22% |
| Mobile homes | 18% | 4% |
| Built before 1960 | 47% | 16% |
| Built since 2000 | 7% | 31% |
| Middle year built | 1965 | 1987 |
| Owner-occupied | 66% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.