Short-term kit
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Perry County, Indiana
EPA puts Perry County in Zone 2, its middle radon zone, and only 26 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
Highest bordering
68.4%
Meade County
- Meade
- 68.4%
- Breckinridge
- 31.3%
3 of 6 neighbours have 30+ tests, 2008 to 2017
Nearest county
44.1%
Dubois County, 24 miles
- Dubois
- 44.1%
- Indiana
- 38.9%
Share at 4+ pCi/L, 136 tests, 2008 to 2017
Ground above low
100.0%
Level with Indiana
- Perry
- 100.0%
- Indiana
- 100.0%
Share of land USGS rates moderate or high potential
Tests reported
26
Too few for a share
- Perry
- 26
- 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 Perry 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
Perry County, At a glance
Perry County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Perry 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 Perry County, 2008 to 2017, laboratory
CDC holds 26 reported tests for Perry County over the 2008 to 2017 laboratory totals, with a median of 2.3 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Perry County beside the counties around it is how this page reads it.
What these figures count
Only 26 tests were reported to CDC for Perry 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).
Perry County, Compared
Perry County radon figures, compared
Calculated by Radon411CDC's largest figure for Perry County rests on 26 tests over the 2008 to 2017 laboratory totals, 6 of them at or above 4 pCi/L, so each test moves its share by 3.8 points and no rank or comparison is drawn from it. Results reached as high as 10.5 pCi/L, with a middle value of 2.3 pCi/L.
Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Meade County, KY reported the largest share at or above 4 pCi/L, 68.4%, and Breckinridge County, KY the smallest, 31.3%, with Dubois County at 44.1% between. Farther out, Harrison County (30 miles away) at 62.4%, Warrick County (35 miles away) at 20.9% and Floyd County (43 miles away) at 42.4% have figures too. Pooled across 92 Indiana counties, 38.9% of reported tests reached that level; across every county in the country with a figure, 35.7%.
Statewide for the same period, Miami County reported the highest share (63.3%) and Jasper County the lowest (14.1%). EPA's 1993 map puts Perry 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.
Perry County, Geology
The ground under Perry County
PredictedUSGS's geologic map puts all of Perry County's mapped land in one class: moderate radon potential. The map puts 52.8% of Perry County in the area it calls Wabash Lowland and 47.1% in Crawford Upland/Mitchell Plain/Norman Upland. USGS gives the first a radon index of 10 and the second 11, both in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Wabash Lowland | Loess, pre-Wisconsinan glacial deposits, Pennsylvanian shale, sandstone, and carbonate bedrock. | Moderate | 10 | 52.8% |
| Crawford Upland/Mitchell Plain/Norman Upland | Unglaciated, underlain by karsted Mississippian carbonate rocks. | Moderate | 11 | 47.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Perry County beside the ground around it
Across Indiana 56.6% of the land is rated high; none of Perry County's is. Of the 6 counties that border it, none has as large a share of moderate-potential ground; Crawford County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Perry County, Local resources
Radon testing and mitigation in Perry County
- Indiana's radon programIndiana Department of HealthIndiana's radon program licenses or certifies radon professionals and offers free or discounted test kits, and answers questions about testing and mitigation in Indiana.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsThe program says:
To purchase a low-cost radon short term or long term test kit, please visit the American Lung Association
- Compare kits
- Professionals in Indiana17 professionals are listed in Indiana.
What Indiana's program says
- Phone
- 1-800-272-9723
- Licensing of radon professionals
According to the Indiana Radon Rule, 410 IAC 5.1, everyone who is serving Indiana by doing radon testing, analysis and mitigation (radon reduction) in residential structures must be certified by the Indiana State Department of Health.
What it means
Perry County, Questions
Questions about radon in Perry County
Are radon levels high in Perry County?
Over the 2008 to 2017 laboratory totals, 23.1% of the radon tests reported to CDC for Perry County, Indiana were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.3 pCi/L. Of the counties bordering it, 3 have a figure over the 2008 to 2017 laboratory totals: Meade County, KY reported the largest share at or above 4 pCi/L, 68.4%, and Breckinridge County, KY the smallest, 31.3%, with Dubois County at 44.1% between.
Which counties border Perry County?
Perry County borders 6 counties: Crawford County, IN, Hancock County, KY, Breckinridge County, KY, Meade County, KY, Spencer County, IN and Dubois County, IN.
Products
Perry County, Products
Testing a home in Perry County
No CDC figure names Perry County; the nearest county with one, Dubois County (24 miles away), reported 44.1% 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 Perry 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
MonitorForensics Detectors
FD-65-RADON rechargeable radon detector with a color screen
- C-NRPP 2024/25: Not included
- Battery
- Alarm
- Screen
Method: Semiconductor sensor
First reading: Within 6 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Perry County, Bordering counties
Counties bordering Perry County
Calculated by Radon411- Radon levels in Meade County, KYEPA zone 2
68.4%at or above 4 pCi/L
Median 8.2 pCi/L · 117 tests
- Radon levels in Spencer County, INEPA zone 2
60.0%at or above 4 pCi/L
Median 4.5 pCi/L · 25 tests
- Radon levels in Dubois County, INEPA zone 2
44.1%at or above 4 pCi/L
Median 3.7 pCi/L · 136 tests
- Radon levels in Breckinridge County, KYEPA zone 2
31.3%at or above 4 pCi/L
Median 2.5 pCi/L · 32 tests
- Radon levels in Crawford County, INEPA zone 2
30.0%at or above 4 pCi/L
Median 2.7 pCi/L · 10 tests
- Radon levels in Hancock County, KYEPA zone 2
16.7%at or above 4 pCi/L
Median 1.4 pCi/L · 6 tests
Perry County, Cities and towns
Cities and towns in Perry County
The Census Bureau estimates 19,389 residents in Perry County for July 1, 2025, 229 more than in 2020 (+1.2%). That works out to 51 people per square mile of land. Its largest town, Tell City, has 7,441 residents, 38.4% of the total. Together its 3 incorporated places hold 48.0% of those residents; the other 52.0% live outside any of them. Reported testing is thin here: 26 tests over 2008 to 2017, or 1.3 for every 1,000 residents (2025 estimate), where Indiana as a whole comes to 6.2.
From Tell City to Troy, CDC publishes no figure by town: each reads Perry County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Tell City | 7,441 | −0.8% | 38.4% |
| Cannelton | 1,488 | −2.2% | 7.7% |
| Troy | 369 | +6.3% | 1.9% |
3 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).
Perry County, Homes
Homes in Perry County
Perry County is a place of houses on their own lots: 75% of its 8,544 homes are detached single-family houses, against 73% across Indiana. Half of its homes were built before 1973, close to Indiana's 1976: 33% date from before 1960 and 17% from 2000 or later. 75% of occupied homes are lived in by their owner (Indiana: 70%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Perry County | Indiana |
|---|---|---|
| Housing units | 8,544 | 2,953,344 |
| Detached houses | 75% | 73% |
| In buildings of 5 or more | 8% | 13% |
| Mobile homes | 13% | 4% |
| Built before 1960 | 33% | 32% |
| Built since 2000 | 17% | 21% |
| Middle year built | 1973 | 1976 |
| Owner-occupied | 75% | 70% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.