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 Dade County, Missouri
EPA puts Dade County in Zone 2, its middle radon zone, and only 3 radon tests from it are 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
32.7%
Greene County
- Greene
- 32.7%
- Polk
- 11.5%
4 of 6 neighbours have 30+ tests, 2008 to 2017
Nearest county
27.1%
Lawrence County, 22 miles
- Lawrence
- 27.1%
- Missouri
- 30.6%
Share at 4+ pCi/L, 70 tests, 2008 to 2017
Ground above low
100.0%
5.8 pts above Missouri
- Dade
- 100.0%
- Missouri
- 94.2%
Share of land USGS rates moderate or high potential
Tests reported
7
Too few for a share
- Dade
- 7
- 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 Dade 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
Dade County, At a glance
Dade County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Dade 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 Dade County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 0.0% |
| 2020 | 50.0% |
| 2022 | 0.0% |
| 2023 | 66.7% |
2023: 66.7%. Across these years the share ran from 0.0% to 66.7%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
Only 3 tests were reported to CDC for Dade 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).
Dade County, Compared
Dade County radon figures, compared
Calculated by Radon411CDC's largest figure for Dade County rests on 7 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 14.3 points and no rank or comparison is drawn from it. Results reached as high as 3.6 pCi/L, with a middle value of 1.3 pCi/L.
Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Greene County reported the largest share at or above 4 pCi/L, 32.7%, and Polk County the smallest, 11.5%, with Jasper County at 29.1% and Lawrence County at 27.1% between. Farther out, Vernon County (40 miles away) at 8.8%, Newton County (45 miles away) at 31.1% and Christian County (48 miles away) at 31.7% 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 Dade 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.
Dade County, Geology
The ground under Dade County
PredictedUSGS's geologic map puts all of Dade County's mapped land in one class: moderate radon potential. The map puts 91.7% of Dade County in the area it calls Springfield Plateau and 8.3% in Osage Plains. 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 |
|---|---|---|---|---|
| Springfield Plateau | Mississippian limestone, shale, and sandstone. | Moderate | 11 | 91.7% |
| Osage Plains | Ordovician dolomite, sandstone, limestone, and shale. | Moderate | 11 | 8.3% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Dade County beside the ground around it
Across Missouri 8.2% of the land is rated high; none of Dade County's is. Of the 6 counties that border it, none has as large a share of moderate-potential ground; Barton County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Dade County, Local resources
Radon testing and mitigation in Dade 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
Dade County, Questions
Questions about radon in Dade County
Are radon levels high in Dade County?
In 2023, 66.7% of the radon tests reported to CDC for Dade County, Missouri were at or above 4 pCi/L, and the median reported pre-mitigation result was 5.4 pCi/L. Of the counties bordering it, 4 have a figure over the 2008 to 2017 laboratory totals: Greene County reported the largest share at or above 4 pCi/L, 32.7%, and Polk County the smallest, 11.5%, with Jasper County at 29.1% and Lawrence County at 27.1% between.
Which counties border Dade County?
Dade County borders 6 counties: Cedar County, Lawrence County, Polk County, Barton County, Jasper County and Greene County.
Products
Dade County, Products
Testing a home in Dade County
No CDC figure names Dade County; the nearest county with one, Lawrence County (22 miles away), reported 27.1% 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 Dade 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
Dade County, Bordering counties
Counties bordering Dade County
Calculated by Radon411- Radon levels in Greene CountyEPA zone 2
32.7%at or above 4 pCi/L
Median 2.5 pCi/L · 1,470 tests
- Radon levels in Jasper CountyEPA zone 2
29.1%at or above 4 pCi/L
Median 2.0 pCi/L · 251 tests
- Radon levels in Lawrence CountyEPA zone 2
27.1%at or above 4 pCi/L
Median 1.8 pCi/L · 70 tests
- Radon levels in Barton CountyEPA zone 2
16.7%at or above 4 pCi/L
Median 1.4 pCi/L · 24 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 Cedar CountyEPA zone 2
5.0%at or above 4 pCi/L
Median 1.3 pCi/L · 20 tests
Dade County, Cities and towns
Cities and towns in Dade County
The Census Bureau estimates 7,804 residents in Dade County for July 1, 2025, 219 more than in 2020 (+2.9%). That works out to 16 people per square mile of land. No town dominates: Greenfield, the largest, has 1,242 residents, 15.9% of the total. Together its 6 incorporated places hold 35.6% of those residents; the other 64.4% live outside any of them. Reported testing is thin here: 7 tests over 2008 to 2017, or 0.9 for every 1,000 residents (2025 estimate), where Missouri as a whole comes to 9.3.
From Greenfield to Arcola, CDC publishes no figure by town: each reads Dade County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Greenfield | 1,242 | +2.5% | 15.9% |
| Lockwood | 863 | +2.1% | 11.1% |
| Everton | 282 | +2.9% | 3.6% |
| Dadeville | 233 | +3.1% | 3.0% |
| South Greenfield | 123 | +3.4% | 1.6% |
| Arcola | 39 | +2.6% | 0.5% |
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).
Dade County, Homes
Homes in Dade County
Dade County is a place of houses on their own lots: 80% of its 3,790 homes are detached single-family houses, against 70% across Missouri. Half of its homes were built before 1974, close to Missouri's 1978: 34% date from before 1960 and 17% from 2000 or later. Owners live in 76% of the occupied homes (Missouri: 68%), so for most households a test and a fix are their own to order.
| Homes | Dade County | Missouri |
|---|---|---|
| Housing units | 3,790 | 2,809,501 |
| Detached houses | 80% | 70% |
| In buildings of 5 or more | under 1% | 13% |
| Mobile homes | 14% | 5% |
| Built before 1960 | 34% | 28% |
| Built since 2000 | 17% | 21% |
| Middle year built | 1974 | 1978 |
| Owner-occupied | 76% | 68% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.