Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Morgan County, Colorado
EPA puts Morgan County in Zone 1, its highest radon zone, and high results are common there: 50.0% of the 38 radon tests reported to CDC (2023) came back at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
50.0%
11.1 pts above CO
- Morgan
- 50.0%
- Colorado
- 38.9%
38 tests, 2023
Median result
4.0pCi/L
Action level reached
- Morgan
- 4.0 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2023
Tests reported
38
36th of 38 by tests
- Morgan
- 38
- Jefferson
- 3,068
Reported to CDC before any fix, 2023
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Colorado
7 of 38
Top quarter
- Morgan
- 50.0%
- Park
- 57.5%
By share, of 38 with 30+ tests
Read a result for Morgan County
Starts at Morgan County's median, 4.0 pCi/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
- 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. Morgan County's median reported result, 2023.
The data
Morgan County, At a glance
Morgan County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Morgan 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 Morgan County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 50.0% |
| 2015 | 70.6% |
| 2016 | 33.3% |
| 2017 | 47.5% |
| 2018 | 78.9% |
| 2019 | 60.0% |
| 2020 | 34.3% |
| 2021 | 60.5% |
| 2022 | 82.1% |
| 2023 | 50.0% |
2023: 50.0%. Across these years the share ran from 33.3% to 82.1%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 38 tests reported to CDC for Morgan County over 2023, many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.
Measured: CDC tracking data. Figure above: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).
Morgan County, Compared
Morgan County radon figures, compared
Calculated by Radon411More than half: 50.0% of the 38 radon tests reported to CDC for Morgan County in 2023 read at least 4 pCi/L. That places it 7th of 38 Colorado counties with 30 or more tests for the same period. That is 11.1 points above the 38.9% pooled from 61 Colorado counties.
The median result, 4.0 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 28.8 pCi/L. The rest split 23.7% under 2 pCi/L and 26.3% from 2 to 4 (Colorado: 39.2% and 22.0%). Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 50.0% share point the same way here.
No bordering county with a figure for the same period reported a higher share; the closest is Weld County at 46.0%, the lowest Adams County at 36.6%. Statewide for the same period, Park County reported the highest share (57.5%) and Bent County the lowest (3.7%).
The busiest year on file was 2019, with 50 tests reported; the quietest, 2014, had 6.
Over 7 years of annual figures the share rose 2.5 points, from 47.5% in 2017 to 50.0% in 2023; its peak was 82.1% in 2022. Nationally, every county with a figure for the same period pools to 33.4%; Morgan County sits 16.6 points above it.
Morgan CountyColorado, pooled
50.0% % of tests38.9% % of tests
| Year | Tests | Morgan County, at or above 4 pCi/L | Colorado, pooled |
|---|---|---|---|
| 2017 | 40 | 47.5% | 41.0% |
| 2018 | 38 | 78.9% | 44.2% |
| 2019 | 50 | 60.0% | 44.1% |
| 2020 | 35 | 34.3% | 41.9% |
| 2021 | 38 | 60.5% | 47.3% |
| 2022 | 39 | 82.1% | 38.6% |
| 2023 | 38 | 50.0% | 38.9% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Morgan County, State data
Colorado's own radon test data
MeasuredWhat Colorado's own agencies publish about radon tests in Morgan 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 Morgan 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
64.1%
227 of 354 tests
Median result
5.1 pCi/L
Highest result
236.0 pCi/L
Tests behind these figures
354 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.
Morgan County, Geology
The ground under Morgan County
PredictedUSGS's geologic map puts all of Morgan 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.
Morgan County beside the ground around it
Morgan County has more high-potential ground than Colorado as a whole: 100% of its land against 74.8%. Of the 4 counties that border it, none has as large a share of high-potential ground; Adams County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Morgan County, Local resources
Radon testing and mitigation in Morgan 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
Morgan County, Questions
Questions about radon in Morgan County
Are radon levels high in Morgan County?
In 2023, 50.0% of the radon tests reported to CDC for Morgan County, Colorado were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.0 pCi/L. Of 38 Colorado counties with 30 or more tests for the same period, 6 reported a higher share; pooled, the state comes to 38.9%.
Which counties border Morgan County?
Morgan County borders 4 counties: Adams County, Washington County, Weld County and Logan County.
Products
Morgan County, Products
Testing a home in Morgan County
In Morgan County, 50.0% of 38 tests reported to CDC in 2023 reached 4 pCi/L, against 38.9% pooled across Colorado. In Zone 1 the year-round level in Morgan 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
MonitorX-Sense
XR0A-iR Wi-Fi battery radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Wi-Fi
- Screen, app
Method: Alpha spectrometry
First reading: Within 24 hours
Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Morgan County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Morgan County
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Morgan County, Bordering counties
Counties bordering Morgan County
Calculated by Radon411- Radon levels in Washington CountyEPA zone 1
100.0%at or above 4 pCi/L
Median 5.3 pCi/L · 2 tests · 50.0 points above Morgan County
- Radon levels in Weld CountyEPA zone 1
46.0%at or above 4 pCi/L
Median 3.5 pCi/L · 663 tests · 4.0 points below Morgan County
- Radon levels in Adams CountyEPA zone 1
36.6%at or above 4 pCi/L
Median 2.3 pCi/L · 1,191 tests · 13.4 points below Morgan County
- Radon levels in Logan CountyEPA zone 1
23.8%at or above 4 pCi/L
Median 2.3 pCi/L · 21 tests · 26.2 points below Morgan County
Morgan County, Cities and towns
Cities and towns in Morgan County
The Census Bureau estimates 30,306 residents in Morgan County for July 1, 2025, 1,226 more than in 2020 (+4.2%). That works out to 24 people per square mile of land. Its largest town, Fort Morgan, has 11,841 residents, 39.1% of the total. Together its 5 incorporated places hold 67.0% of those residents; the other 33.0% live outside any of them. Reported testing is thin here: 38 tests over 2023, or 1.3 for every 1,000 residents (2025 estimate), where Colorado as a whole comes to 3.6.
From Fort Morgan to Hillrose, CDC publishes no figure by town: each reads Morgan County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Fort Morgan | 11,841 | +2.5% | 39.1% |
| Brush | 5,337 | +0.4% | 17.6% |
| Wiggins | 1,868 | +30.0% | 6.2% |
| Log Lane Village | 937 | +4.8% | 3.1% |
| Hillrose | 312 | +1.0% | 1.0% |
5 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).
Morgan County, Homes
Homes in Morgan County
Of Morgan County's 11,670 homes, 70% are detached houses, against 62% across Colorado; 12% are mobile homes. The homes are older than Colorado's as a whole: half were built before 1975 (1987 for Colorado), and 32% date from before 1960. 65% 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 | Morgan County | Colorado |
|---|---|---|
| Housing units | 11,670 | 2,545,124 |
| Detached houses | 70% | 62% |
| In buildings of 5 or more | 9% | 22% |
| Mobile homes | 12% | 4% |
| Built before 1960 | 32% | 16% |
| Built since 2000 | 21% | 31% |
| Middle year built | 1975 | 1987 |
| Owner-occupied | 65% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.