Short-term kit
PicoCan short-term charcoal canister radon test
- Lab fee included
Method: Charcoal
In home: 48 to 96 hours
Locations and reports
Radon Levels in Gila County, Arizona
EPA puts Gila County in Zone 2, its middle radon zone, and only 17 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
30.0%
Coconino County
- Coconino
- 30.0%
- Pinal
- 8.9%
4 of 6 neighbours have 30+ tests, 2008 to 2017
Nearest county
8.9%
Pinal County, 69 miles
- Pinal
- 8.9%
- Arizona
- 16.8%
Share at 4+ pCi/L, 101 tests, 2008 to 2017
Ground above low
100.0%
42.8 pts above Arizona
- Gila
- 100.0%
- Arizona
- 57.2%
Share of land USGS rates moderate or high potential
Tests reported
17
Too few for a share
- Gila
- 17
- Needed
- 30
2008 to 2017, laboratory
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 Gila 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
Gila County, At a glance
Gila County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Gila County is a
USGS geologic potential: Moderate across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Gila County, 2008 to 2017, laboratory
Under 2 pCi/L: 6%2 to 4 pCi/L: 29%4 pCi/L and above: 65%
Of 17 pre-mitigation tests reported to CDC, not homes in this area.
| Result band | Tests Measured | Share Measured |
|---|---|---|
| Under 2 pCi/L | 1 | 5.9% |
| 2 to 4 pCi/L | 5 | 29.4% |
| 4 pCi/L and above | 11 | 64.7% |
What these figures count
Only 17 tests were reported to CDC for Gila County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
The figures at the top are for 2008 to 2017 (laboratory totals): a percentage there is a share of radon tests reported to CDC for Gila County over 2008 to 2017, laboratory, and a percentage in a view below is a share of the tests reported for the year or period it names. It is not a share of homes in Gila County, and it is not a random sample: it counts only the tests people chose to run and that were reported.
CDC works out the shares and the median over pre-mitigation tests, counting a test not marked as before or after mitigation as one of them (17 for 2008 to 2017, laboratory). The median is the middle result of those tests, not of buildings. CDC also reports the number of buildings tested (8), a different count, so the two totals are not interchangeable.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Gila County, Compared
Gila County radon figures, compared
Calculated by Radon411CDC's largest figure for Gila County rests on 17 tests over the 2008 to 2017 laboratory totals, 11 of them at or above 4 pCi/L, so each test moves its share by 5.9 points and no rank or comparison is drawn from it. Results reached as high as 10.7 pCi/L, with a middle value of 5.7 pCi/L.
Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Coconino County reported the largest share at or above 4 pCi/L, 30.0%, and Pinal County the smallest, 8.9%, with Maricopa County at 17.4% and Yavapai County at 16.2% between. Farther out, Pima County (130 miles away) at 6.8% and Mohave County (213 miles away) at 4.1% have figures too. Pooled across 13 Arizona counties, 16.8% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, Coconino County reported the highest share (30.0%) and Mohave County the lowest (4.1%). EPA's 1993 map puts Gila County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Gila County, Geology
The ground under Gila County
PredictedUSGS's geologic map puts all of Gila County's mapped land in one class: moderate radon potential. The map puts 79.3% of Gila County in the area it calls Transition Zone and 20.7% in Colorado Plateau. USGS gives the first a radon index of 10 and the second 9, both in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Transition Zone | Precambrian igneous, metamorphic and sedimentary rocks and Tertiary volcanic rocks. | Moderate | 10 | 79.3% |
| Colorado Plateau | Paleozoic sadstone, shale, and limestones, some Precambrian gneiss, metasedimentary rocks, granites. | Moderate | 9 | 20.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Gila County beside the ground around it
Across Arizona 0.1% of the land is rated high; none of Gila County's is. Of the 6 counties that border it, none has as large a share of moderate-potential ground; Navajo County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Gila County, Local resources
Local resources in Arizona
Who to ask in Arizona: its radon program, test kits and professionals.
- Arizona's radon programArizona Department of Health ServicesArizona's radon program answers questions about testing, mitigation and the rules in Arizona.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
- See the Arizona directoryNo professionals are listed in Arizona yet. The state program can point you to registered testers and mitigators.
What it means
Gila County, Questions
Questions about radon in Gila County
Are radon levels high in Gila County?
Over the 2008 to 2017 laboratory totals, 64.7% of the radon tests reported to CDC for Gila County, Arizona were at or above 4 pCi/L, and the median reported pre-mitigation result was 5.7 pCi/L. That is a share of reported tests, not of homes. EPA places Gila County in Zone 2, moderate predicted potential, a predicted average indoor screening level 2 to 4 pCi/L. Homes with elevated levels occur in all three zones, so the figures describe the area, not your house. Testing is the only way to know the radon level in a specific building.
How do I get a radon test in Gila County?
EPA says you can test your home yourself or hire a qualified radon test company. No radon testing business listed on Radon411 has an address in Gila County or names it as a service area yet. The Arizona radon program is the place to ask about certified testers and any test kit offer it runs.
How to test a homeTest kits comparedFree and low-cost kits by stateRadon Action Month checklistArizona radon program
Who does radon mitigation in Gila County?
Radon411 has no radon business listed for Arizona yet. EPA recommends a qualified contractor for the fix, and some states require a licensed or certified professional. Your state radon program is the place to check whether Arizona requires one.
How radon mitigation worksWhat mitigation costsArizona radon program
What EPA radon zone is Gila County in?
EPA places Gila County, Arizona in Zone 2, which EPA describes as moderate predicted potential for the area. A zone is a prediction for the whole county and never determines whether a particular home should be tested. EPA recommends testing every home regardless of zone.
Should I test my home in Gila County?
Yes. Over the 2008 to 2017 laboratory totals, 64.7% of the radon tests reported to CDC for Gila County, Arizona were at or above 4 pCi/L, and the median reported pre-mitigation result was 5.7 pCi/L. That is a share of reported tests, not of homes. Testing is the only way to know the radon level in a specific building. EPA recommends fixing a home when the radon level is 4 pCi/L or higher. How to test a home, what testing costs.
Which counties border Gila County?
Gila County borders 6 counties: Graham County, Pinal County, Navajo County, Yavapai County, Maricopa County and Coconino County. Radon potential follows geology rather than county lines, so a bordering county's report can be relevant.
Products
Gila County, Products
Testing a home in Gila County
No CDC figure names Gila County; the nearest county with one, Pinal County (69 miles away), reported 8.9% 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 2 a short-term kit (2 to 90 days) is the quick first check in Gila 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
MonitorX-Sense
XR0A-SR battery digital radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Gila County, Bordering counties
Counties bordering Gila County
Calculated by Radon411- Radon levels in Graham CountyEPA zone 2
36.4%at or above 4 pCi/L
Median 3.0 pCi/L · 11 tests
- Radon levels in Coconino CountyEPA zone 2
30.0%at or above 4 pCi/L
Median 2.3 pCi/L · 273 tests
- Radon levels in Maricopa CountyEPA zone 2
17.4%at or above 4 pCi/L
Median 1.6 pCi/L · 2,393 tests
- Radon levels in Yavapai CountyEPA zone 2
16.2%at or above 4 pCi/L
Median 1.6 pCi/L · 265 tests
- Radon levels in Pinal CountyEPA zone 2
8.9%at or above 4 pCi/L
Median 0.9 pCi/L · 101 tests
- Radon levels in Navajo CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 1.1 pCi/L · 16 tests
Gila County, Cities and towns
Cities and towns in Gila County
The Census Bureau estimates 53,801 residents in Gila County for July 1, 2025, 463 more than in 2020 (+0.9%). That works out to 11 people per square mile of land. Its largest town, Payson, has 16,693 residents, 31.0% of the total. CDC's 17 reported tests for 2008 to 2017 work out to 0.3 per 1,000 residents (2025 estimate), close to Arizona's 0.5.
From Payson to Winkelman, CDC publishes no figure by town: each reads Gila County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Payson | 16,693 | +1.8% | 31.0% |
| Globe | 7,191 | −0.5% | 13.4% |
| Star Valley | 2,538 | +1.9% | 4.7% |
| Miami | 1,514 | −1.8% | 2.8% |
| Haydenextends beyond Gila County | 510 | −1.5% | Counted whole |
| Winkelmanextends beyond Gila County | 290 | −1.7% | Counted whole |
6 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). A place that extends beyond Gila County is counted whole, so it has no share.
Gila County, Homes
Homes in Gila County
Of Gila County's 32,614 homes, 72% are detached houses, against 64% across Arizona; 21% are mobile homes. Half of its homes were built before 1985, close to Arizona's 1992: 13% date from before 1960 and 26% from 2000 or later. Owners live in 77% of the occupied homes (Arizona: 67%), so for most households a test and a fix are their own to order.
| Homes | Gila County | Arizona |
|---|---|---|
| Housing units | 32,614 | 3,142,443 |
| Detached houses | 72% | 64% |
| In buildings of 5 or more | 3% | 16% |
| Mobile homes | 21% | 10% |
| Built before 1960 | 13% | 8% |
| Built since 2000 | 26% | 35% |
| Middle year built | 1985 | 1992 |
| Owner-occupied | 77% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.