Short-term kit
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
Locations and reports
Radon Levels in Jones County, South Dakota
EPA puts Jones County in Zone 2, its middle radon zone, and only 8 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
Nearest county
66.7%
Hughes County, 45 miles
- Hughes
- 66.7%
- SD
- 58.8%
Share at 4+ pCi/L, 30 tests, 2006 to 2015
Ground above low
100.0%
1.0 pts above SD
- Jones
- 100.0%
- SD
- 99.0%
Share of land USGS rates moderate or high potential
Tests reported
8
Too few for a share
- Jones
- 8
- 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 Jones 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
Jones County, At a glance
Jones County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Jones 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 Jones County, 2008 to 2017, laboratory
CDC holds 8 reported tests for Jones County over the 2008 to 2017 laboratory totals, with a median of 20.8 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Jones County beside the counties around it is how this page reads it.
What these figures count
Only 8 tests were reported to CDC for Jones 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).
Jones County, Compared
Jones County radon figures, compared
Calculated by Radon411CDC's largest figure for Jones County rests on 8 tests over the 2008 to 2017 laboratory totals, 6 of them at or above 4 pCi/L, so each test moves its share by 12.5 points and no rank or comparison is drawn from it. Results reached as high as 44.2 pCi/L, with a middle value of 20.8 pCi/L.
The nearest counties with a figure are Hughes County (45 miles away) at 66.7%, Brule County (82 miles away) at 62.5% and Pennington County (106 miles away) at 51.8%. Pooled across 63 South Dakota counties, 58.8% of reported tests reached that level; across every county in the country with a figure, 36.3%.
Statewide for the same period, Bon Homme County reported the highest share (79.5%) and Davison County the lowest (47.9%). EPA's 1993 map puts Jones 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.
Jones County, Geology
The ground under Jones County
PredictedMost of the ground under Jones County is one class on USGS's geologic map: 99.8% of its land is moderate radon potential, with 0.2% high. All of it lies in the area the map calls Pierre Hills, to which USGS gives a radon index of 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Pierre Hills | Pierre Shale and Fox Hills sandstone. | Moderate | 10 | 99.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Jones County beside the ground around it
South Dakota as a whole has more high-potential ground than Jones County: 56.7% of its land, against 0.2% here. Of the 5 counties that border it, 2 have more high-potential ground, Lyman County the most at 55.7%.
The map rates the ground, not the air in any home.
Local help
Jones County, Local resources
Radon testing and mitigation in Jones County
- South Dakota's radon programDepartment of Agriculture and Natural ResourcesSouth Dakota's radon program offers free or discounted test kits, and answers questions about testing and mitigation in South Dakota.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
The Department of Agriculture and Natural Resources (DANR) will provide 500 free Radon test kits to South Dakota Residents.
- Compare kits
- Professionals in South Dakota5 professionals are listed in South Dakota.
What South Dakota's program says
- Phone
- 1-800-438-3367
What it means
Jones County, Questions
Questions about radon in Jones County
Are radon levels high in Jones County?
Over the 2008 to 2017 laboratory totals, 75.0% of the radon tests reported to CDC for Jones County, South Dakota were at or above 4 pCi/L, and the median reported pre-mitigation result was 20.8 pCi/L. Of the 8 nearest counties with a figure, within 139 miles, the share of tests at or above 4 pCi/L runs from 47.9% to 68.3%.
Which counties border Jones County?
Jones County borders 5 counties: Mellette County, Stanley County, Lyman County, Jackson County and Haakon County.
Products
Jones County, Products
Testing a home in Jones County
No CDC figure names Jones County; the nearest county with one, Hughes County (45 miles away), reported 66.7% 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. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Jones County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Monitor
RM-63Pro rechargeable radon monitor with a touchscreen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Jones County, Bordering counties
Counties bordering Jones County
Calculated by Radon411- Radon levels in Stanley CountyEPA zone 1
100.0%at or above 4 pCi/L
Median 5.2 pCi/L · 2 tests
- Radon levels in Lyman CountyEPA zone 1
100.0%at or above 4 pCi/L
Median 20.0 pCi/L · 5 tests
- Radon levels in Haakon CountyEPA zone 2
50.0%at or above 4 pCi/L
Median 6.3 pCi/L · 2 tests
- Radon levels in Jackson CountyEPA zone 2
0.0%at or above 4 pCi/L
Median 1.1 pCi/L · 1 test
- Radon levels in Mellette CountyEPA zone 2
No CDC figure for 2006 to 2015; its page reads it against its own neighbours.
Jones County, Cities and towns
Cities and towns in Jones County
About 913 people live in Jones County by the Census Bureau's estimate for July 1, 2025, 14 fewer than in 2020 (−1.5%). Spread over its land, that is 0.9 people to the square mile. Murdo alone is home to 482 of them, 52.8% of the total. Together its 2 incorporated places hold 57.6% of those residents; the other 42.4% live outside any of them. CDC's 8 reported tests for 2008 to 2017 work out to 8.8 per 1,000 residents (2025 estimate), close to South Dakota's 6.7.
From Murdo to Draper, CDC publishes no figure by town: each reads Jones County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Murdo | 482 | +0.6% | 52.8% |
| Draper | 44 | −6.4% | 4.8% |
2 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).
Jones County, Homes
Homes in Jones County
Of Jones County's 478 homes, 64% are detached houses, against 67% across South Dakota; 26% are mobile homes. The homes are older than South Dakota's as a whole: half were built before 1971 (1979 for South Dakota), and 38% date from before 1960. 74% of occupied homes are lived in by their owner (South Dakota: 69%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Jones County | South Dakota |
|---|---|---|
| Housing units | 478 | 402,364 |
| Detached houses | 64% | 67% |
| In buildings of 5 or more | under 1% | 16% |
| Mobile homes | 26% | 8% |
| Built before 1960 | 38% | 29% |
| Built since 2000 | 8% | 28% |
| Middle year built | 1971 | 1979 |
| Owner-occupied | 74% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.