Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Coal County, Oklahoma
EPA puts Coal County in Zone 3, its lowest radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
8.9%
Oklahoma County, 91 miles
- Oklahoma
- 8.9%
- Oklahoma
- 12.6%
Share at 4+ pCi/L, 135 tests, 2006 to 2015
Ground above low
None
15.2 pts below Oklahoma
- Coal
- 0.0%
- Oklahoma
- 15.2%
Share of land USGS rates moderate or high potential
Tests reported
0
None published
A home here needs its own test
EPA radon zone
Zone 3
Lower potential
- 1
- 2
- Zone 3
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Coal 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
Coal County, At a glance
Coal County at a glance
Predicted: EPA radon zone
EPA Zone 3: lower predicted potential
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
No CDC test figures here
CDC has published no radon test figures for Coal County. Oklahoma County, 91 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Coal County, Compared
Coal County radon figures, compared
Calculated by Radon411No CDC figure names Coal County, in any year or ten-year total; over the 2006 to 2015 laboratory totals, the agency's counts reach 53 Oklahoma counties without it. Pooled across 53 Oklahoma counties, 12.6% of reported tests reached that level; across every county in the country with a figure, 36.3%.
The nearest counties with a figure are Oklahoma County (91 miles away) at 8.9%, Tulsa County (108 miles away) at 6.0% and Cherokee County (117 miles away) at 32.0%. Statewide for the same period, Delaware County reported the highest share (44.7%) and Tulsa County the lowest (6.0%).
EPA's 1993 map puts Coal County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Coal County, Geology
The ground under Coal County
PredictedUSGS's geologic map puts all of Coal County's mapped land in one class: low radon potential. The map puts 84.3% of Coal County in the area it calls Central Oklahoma Plains and Hills and 15.7% in Ouachita Mountains. USGS gives the first a radon index of 7 and the second 8, both in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Central Oklahoma Plains and Hills | Nonmarine Permian and Tertiary rocks, including shale, sandstone, and conglomerate in the western part, and Mississippian and Pennsylvanian rocks in the eastern part. | Low | 7 | 84.3% |
| Ouachita Mountains | Mississippian and Pennsylvanian limestone, sandstone, siltstone, shale, conglomerate. | Low | 8 | 15.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Coal County beside the ground around it
Across Oklahoma 0.6% of the land is rated high; none of Coal County's is. None of the 5 counties that border it has any moderate-potential ground either.
The map rates the ground, not the air in any home.
Local help
Coal County, Local resources
Radon testing and mitigation in Coal County
- Oklahoma's radon programDepartment of Environmental QualityOklahoma's radon program answers questions about testing, mitigation and the rules in Oklahoma.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 Oklahoma directoryNo professionals are listed in Oklahoma yet. The state program can point you to registered testers and mitigators.
What it means
Coal County, Questions
Questions about radon in Coal County
Are radon levels high in Coal County?
No CDC testing statistics are published here for Coal County, Oklahoma yet. Of the 5 nearest counties with a figure, within 151 miles, the share of tests at or above 4 pCi/L runs from 6.0% to 44.7%.
Which counties border Coal County?
Coal County borders 5 counties: Atoka County, Pontotoc County, Hughes County, Johnston County and Pittsburg County.
Products
Coal County, Products
Testing a home in Coal County
No CDC figure names Coal County; the nearest county with one, Oklahoma County (91 miles away), reported 8.9% of its tests at or above 4 pCi/L over the 2006 to 2015 laboratory totals, the only reading nearby until a test of this home. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Coal County.
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
MonitorAEGTEST
HOUND-3786 rechargeable radon monitor with a 3.5-inch color screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Ion chamber
First reading: Within 10 minutes
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Coal County, Bordering counties
Counties bordering Coal County
Calculated by Radon411- Radon levels in Pontotoc CountyEPA zone 3
0.0%at or above 4 pCi/L
Median 0.6 pCi/L · 3 tests
- Radon levels in Atoka CountyEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Hughes CountyEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Johnston CountyEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
- Radon levels in Pittsburg CountyEPA zone 3
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Coal County, Cities and towns
Cities and towns in Coal County
The Census Bureau estimates 5,436 residents in Coal County for July 1, 2025, 160 more than in 2020 (+3.0%). That works out to 11 people per square mile of land. Its largest town, Coalgate, has 1,735 residents, 31.9% of the total. CDC publishes no radon test count for Coal County; across Oklahoma its counts for 2006 to 2015 come to 0.2 tests for every 1,000 residents (2025 estimate).
From Coalgate to Centrahoma, CDC publishes no figure by town: each reads Coal County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Coalgate | 1,735 | +3.8% | 31.9% |
| Tupelo | 333 | +3.1% | 6.1% |
| Lehigh | 281 | +3.3% | 5.2% |
| Phillips | 128 | +3.2% | 2.4% |
| Bromideextends beyond Coal County | 121 | +1.7% | Counted whole |
| Centrahoma | 82 | +3.8% | 1.5% |
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 Coal County is counted whole, so it has no share.
Coal County, Homes
Homes in Coal County
Coal County is a place of houses on their own lots: 83% of its 2,581 homes are detached single-family houses, against 73% across Oklahoma. Half of its homes were built before 1976, close to Oklahoma's 1980: 24% date from before 1960 and 19% from 2000 or later. 71% of occupied homes are lived in by their owner (Oklahoma: 66%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Coal County | Oklahoma |
|---|---|---|
| Housing units | 2,581 | 1,763,036 |
| Detached houses | 83% | 73% |
| In buildings of 5 or more | 1% | 12% |
| Mobile homes | 11% | 9% |
| Built before 1960 | 24% | 21% |
| Built since 2000 | 19% | 25% |
| Middle year built | 1976 | 1980 |
| Owner-occupied | 71% | 66% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.