Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
Locations and reports
Radon Levels in Montgomery County, Arkansas
EPA puts Montgomery County in Zone 2, its middle radon zone, and only 1 radon test from it is 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
45.8%
Garland County
- Garland
- 45.8%
1 of 8 neighbours have 30+ tests, 2007 to 2016
Nearest county
45.8%
Garland County, 29 miles
- Garland
- 45.8%
- Arkansas
- 22.7%
Share at 4+ pCi/L, 48 tests, 2007 to 2016
Ground above low
72.4%
51.1 pts above Arkansas
- Montgomery
- 72.4%
- Arkansas
- 21.3%
Share of land USGS rates moderate or high potential
Tests reported
2
Too few for a share
- Montgomery
- 2
- Needed
- 30
2006 to 2015, 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 Montgomery 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
Montgomery County, At a glance
Montgomery County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Montgomery County is a
USGS geologic potential: Moderate across 72% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
Radon tests reported for Montgomery County, 2008 to 2017, laboratory
CDC holds 1 reported test for Montgomery County over the 2008 to 2017 laboratory totals, a result of 0.6 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Montgomery County beside the counties around it is how this page reads it.
What these figures count
Only 1 test was reported to CDC for Montgomery 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.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Montgomery County, Compared
Montgomery County radon figures, compared
Calculated by Radon411CDC's largest figure for Montgomery County rests on 2 tests over the 2006 to 2015 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 50.0 points and no rank or comparison is drawn from it. Results reached as high as 2.6 pCi/L, with a middle value of 1.6 pCi/L.
Garland County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 45.8% of its tests at or above 4 pCi/L. Farther out, Saline County (57 miles away) at 31.9%, Pulaski County (78 miles away) at 6.8% and Washington County (104 miles away) at 14.3% have figures too. Pooled across 60 Arkansas counties, 22.7% of reported tests reached that level; across every county in the country with a figure, 35.8%.
Statewide for the same period, Garland County reported the highest share (45.8%) and Pulaski County the lowest (6.8%). EPA's 1993 map puts Montgomery County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 72% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Montgomery County, Geology
The ground under Montgomery County
PredictedUSGS's geologic map splits Montgomery County: 72.4% of its land is moderate radon potential and 27.6% low. The map puts 72.4% of Montgomery County in the area it calls Central Ouachita Mountains and 27.6% in Athens Plateau/Fourche Mountains. USGS gives the first a radon index of 9, in the moderate band (9 to 11), and the second 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Central Ouachita Mountains | Intensely deformed Ordovician and Silurian shales and sandstones with minor chert and limestone. | Moderate | 9 | 72.4% |
| Athens Plateau/Fourche Mountains | Mississippian and Pennsylvanian sandstones and shales. | Low | 8 | 27.6% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Montgomery County beside the ground around it
Montgomery County has more moderate-potential ground than Arkansas as a whole: 72.4% of its land against 21.3%. Of the 8 counties that border it, 1 has more moderate-potential ground, Garland County the most at 87.7%.
The map rates the ground, not the air in any home.
Local help
Montgomery County, Local resources
Radon testing and mitigation in Montgomery County
- Arkansas's radon programArkansas Department of HealthArkansas's radon program answers questions about testing, mitigation and the rules in Arkansas.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 Arkansas directoryNo professionals are listed in Arkansas yet. The state program can point you to registered testers and mitigators.
What Arkansas's program says
- Phone
- 501-661-2621
- ADH.EPI.Radon@arkansas.gov
What it means
Montgomery County, Questions
Questions about radon in Montgomery County
Are radon levels high in Montgomery County?
Over the 2008 to 2017 laboratory totals, 0.0% of the radon tests reported to CDC for Montgomery County, Arkansas were at or above 4 pCi/L, and the median reported pre-mitigation result was 0.6 pCi/L. Garland County, the one bordering county with a figure over the 2007 to 2016 laboratory totals, reported 45.8% of its tests at or above 4 pCi/L.
Which counties border Montgomery County?
Montgomery County borders 8 counties: Pike County, Polk County, Scott County, Garland County, Howard County, Yell County, Hot Spring County and Clark County.
Products
Montgomery County, Products
Testing a home in Montgomery County
No CDC figure names Montgomery County; the nearest county with one, Garland County (29 miles away), reported 45.8% of its tests at or above 4 pCi/L over the 2007 to 2016 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 Montgomery 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
Monitor
View Radon Wi-Fi radon monitor with an e-paper display
- C-NRPP 2024/25: Approved
- Battery
- Wi-Fi, Bluetooth
- Screen, app
Method: Alpha spectrometry
Readings: Every 60 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Montgomery County, Bordering counties
Counties bordering Montgomery County
Calculated by Radon411- Radon levels in Garland CountyEPA zone 2
45.8%at or above 4 pCi/L
Median 2.9 pCi/L · 48 tests
- Radon levels in Polk CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 2.2 pCi/L · 1 test
- Radon levels in Howard CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 2.6 pCi/L · 3 tests
- Radon levels in Yell CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.5 pCi/L · 2 tests
- Radon levels in Hot Spring CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 2.1 pCi/L · 1 test
- Radon levels in Clark CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 1.3 pCi/L · 4 tests
- Radon levels in Pike CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
- Radon levels in Scott CountyEPA zone 3
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Montgomery County, Cities and towns
Cities and towns in Montgomery County
The Census Bureau estimates 8,579 residents in Montgomery County for July 1, 2025, 97 more than in 2020 (+1.1%). That works out to 11 people per square mile of land. Glenwood, the largest place on its list (2,016 residents in all), extends beyond Montgomery County, so no share of the total is worked out for it. CDC's 2 reported tests for 2006 to 2015 work out to 0.2 per 1,000 residents (2025 estimate), close to Arkansas' 0.2.
From Glenwood to Black Springs, CDC publishes no figure by town: each reads Montgomery County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Glenwoodextends beyond Montgomery County | 2,016 | −2.2% | Counted whole |
| Mount Ida | 1,005 | −2.1% | 11.7% |
| Norman | 307 | +0.7% | 3.6% |
| Oden | 183 | +2.2% | 2.1% |
| Black Springs | 91 | Level | 1.1% |
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). A place that extends beyond Montgomery County is counted whole, so it has no share.
Montgomery County, Homes
Homes in Montgomery County
Of Montgomery County's 5,469 homes, 61% are detached houses, against 70% across Arkansas; 31% are mobile homes. Half of its homes were built before 1989, close to Arkansas' 1987: 18% date from before 1960 and 28% from 2000 or later. Owners live in 79% of the occupied homes (Arkansas: 66%), so for most households a test and a fix are their own to order.
| Homes | Montgomery County | Arkansas |
|---|---|---|
| Housing units | 5,469 | 1,382,664 |
| Detached houses | 61% | 70% |
| In buildings of 5 or more | 1% | 10% |
| Mobile homes | 31% | 11% |
| Built before 1960 | 18% | 14% |
| Built since 2000 | 28% | 28% |
| Middle year built | 1989 | 1987 |
| Owner-occupied | 79% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.