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 Hickory County, Missouri
EPA puts Hickory County in Zone 2, its middle radon zone, and only 1 radon test from it is on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Highest bordering
30.6%
Benton County
- Benton
- 30.6%
- Polk
- 11.5%
3 of 5 neighbours have 30+ tests, 2008 to 2017
Nearest county
11.5%
Polk County, 23 miles
- Polk
- 11.5%
- Missouri
- 30.6%
Share at 4+ pCi/L, 78 tests, 2008 to 2017
Ground above low
100.0%
5.8 pts above Missouri
- Hickory
- 100.0%
- Missouri
- 94.2%
Share of land USGS rates moderate or high potential
Tests reported
9
Too few for a share
- Hickory
- 9
- 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 Hickory 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
Hickory County, At a glance
Hickory County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Hickory 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 Hickory County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2015 | 0.0% |
| 2016 | 0.0% |
| 2017 | 0.0% |
| 2018 | 33.3% |
| 2022 | 0.0% |
| 2023 | 0.0% |
2023: 0.0%. Across these years the share ran from 0.0% to 33.3%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 1 test was reported to CDC for Hickory County over 2023, 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: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).
Hickory County, Compared
Hickory County radon figures, compared
Calculated by Radon411CDC's largest figure for Hickory County rests on 9 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 11.1 points and no rank or comparison is drawn from it. Results reached as high as 3.1 pCi/L, with a middle value of 2.0 pCi/L.
Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Benton County reported the largest share at or above 4 pCi/L, 30.6%, and Polk County the smallest, 11.5%, with Camden County at 22.9% between. Farther out, Henry County (40 miles away) at 38.3%, Morgan County (41 miles away) at 21.1% and Laclede County (44 miles away) at 37.0% have figures too. Pooled across 115 Missouri counties, 30.6% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, Atchison County reported the highest share (69.9%) and Vernon County the lowest (8.8%). EPA's 1993 map puts Hickory 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.
Hickory County, Geology
The ground under Hickory County
PredictedUSGS's geologic map puts all of Hickory County's mapped land in one class: moderate radon potential. The map puts 61.5% of Hickory County in the area it calls Salem Plateau and 38.5% in Springfield Plateau. USGS gives both a radon index of 11, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Salem Plateau | Ordovician dolomite, sandstone, limestone, and shale. | Moderate | 11 | 61.5% |
| Springfield Plateau | Mississippian limestone, shale, and sandstone. | Moderate | 11 | 38.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Hickory County beside the ground around it
Across Missouri 8.2% of the land is rated high; none of Hickory County's is. Of the 5 counties that border it, none has as large a share of moderate-potential ground; Camden County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Hickory County, Local resources
Radon testing and mitigation in Hickory County
- Missouri Radon ProgramMissouri Radon Program, run by Missouri Department of Health and Senior Services, offers free or discounted test kits, and answers questions about testing and mitigation in Missouri.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
Free radon test kits are available for Missouri residents (limit one per household).
- Compare kits
- Professionals in Missouri27 professionals are listed in Missouri.
What Missouri's program says
- Phone
- 573-751-6102
- radon@health.mo.gov
What it means
Hickory County, Questions
Questions about radon in Hickory County
Are radon levels high in Hickory County?
In 2023, 0.0% of the radon tests reported to CDC for Hickory County, Missouri were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.5 pCi/L. Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Benton County reported the largest share at or above 4 pCi/L, 30.6%, and Polk County the smallest, 11.5%, with Camden County at 22.9% between.
Which counties border Hickory County?
Hickory County borders 5 counties: Polk County, Benton County, Camden County, St. Clair County and Dallas County.
Products
Hickory County, Products
Testing a home in Hickory County
No CDC figure names Hickory County; the nearest county with one, Polk County (23 miles away), reported 11.5% 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 Hickory 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
MonitorAranet
Radon One battery digital radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Bluetooth
- Alarm
- Screen, app
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
Hickory County, Bordering counties
Counties bordering Hickory County
Calculated by Radon411- Radon levels in Benton CountyEPA zone 2
30.6%at or above 4 pCi/L
Median 2.0 pCi/L · 49 tests
- Radon levels in Camden CountyEPA zone 2
22.9%at or above 4 pCi/L
Median 2.2 pCi/L · 763 tests
- Radon levels in Dallas CountyEPA zone 2
14.8%at or above 4 pCi/L
Median 1.4 pCi/L · 27 tests
- Radon levels in Polk CountyEPA zone 2
11.5%at or above 4 pCi/L
Median 1.6 pCi/L · 78 tests
- Radon levels in St. Clair CountyEPA zone 2
7.7%at or above 4 pCi/L
Median 1.5 pCi/L · 13 tests
Hickory County, Cities and towns
Cities and towns in Hickory County
Hickory County is growing: the Census Bureau puts it at 9,044 residents on July 1, 2025, up 8.9% from 8,306 in 2020. That works out to 23 people per square mile of land. No town dominates: Hermitage, the largest, has 658 residents, 7.3% of the total. Together its 5 incorporated places hold 18.7% of those residents; the other 81.3% live outside any of them. Reported testing is thin here: 9 tests over 2008 to 2017, or 1.0 for every 1,000 residents (2025 estimate), where Missouri as a whole comes to 9.3.
From Hermitage to Cross Timbers, CDC publishes no figure by town: each reads Hickory County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Hermitage | 658 | +5.6% | 7.3% |
| Weaubleau | 415 | +9.2% | 4.6% |
| Wheatland | 304 | +9.0% | 3.4% |
| Preston | 181 | +9.7% | 2.0% |
| Cross Timbers | 135 | +10.7% | 1.5% |
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).
Hickory County, Homes
Homes in Hickory County
Of Hickory County's 5,502 homes, 65% are detached houses, against 70% across Missouri; 32% are mobile homes. Half of its homes were built before 1981, close to Missouri's 1978: 15% date from before 1960 and 22% from 2000 or later. Owners live in 85% of the occupied homes (Missouri: 68%), so for most households a test and a fix are their own to order.
| Homes | Hickory County | Missouri |
|---|---|---|
| Housing units | 5,502 | 2,809,501 |
| Detached houses | 65% | 70% |
| In buildings of 5 or more | under 1% | 13% |
| Mobile homes | 32% | 5% |
| Built before 1960 | 15% | 28% |
| Built since 2000 | 22% | 21% |
| Middle year built | 1981 | 1978 |
| Owner-occupied | 85% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.