Short-term kit
Radon Short Term Test Kit short-term charcoal radon test kit, lab fee included
- Lab fee included
Method: Charcoal
In home: 2 to 7 days
Locations and reports
Radon Levels in Crawford County, Indiana
EPA puts Crawford County in Zone 2, its middle radon zone, and only 10 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%
- Washington
- 42.1%
4 of 6 neighbours have 30+ tests, 2008 to 2017
Nearest county
62.4%
Harrison County, 20 miles
- Harrison
- 62.4%
- Indiana
- 38.9%
Share at 4+ pCi/L, 221 tests, 2008 to 2017
Ground above low
100.0%
Level with Indiana
- Crawford
- 100.0%
- Indiana
- 100.0%
Share of land USGS rates moderate or high potential
Tests reported
10
Too few for a share
- Crawford
- 10
- 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 Crawford 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
Crawford County, At a glance
Crawford County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Crawford 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 Crawford County, 2008 to 2017, laboratory
CDC holds 10 reported tests for Crawford County over the 2008 to 2017 laboratory totals, with a median of 2.7 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Crawford County beside the counties around it is how this page reads it.
What these figures count
Only 10 tests were reported to CDC for Crawford 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).
Crawford County, Compared
Crawford County radon figures, compared
Calculated by Radon411CDC's largest figure for Crawford County rests on 10 tests over the 2008 to 2017 laboratory totals, 3 of them at or above 4 pCi/L, so each test moves its share by 10.0 points and no rank or comparison is drawn from it. Results reached as high as 14.0 pCi/L, with a middle value of 2.7 pCi/L.
Of the counties bordering it, 4 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 Washington County the smallest, 42.1%, with Harrison County at 62.4% and Dubois County at 44.1% between. Farther out, Floyd County (30 miles away) at 42.4%, Lawrence County (38 miles away) at 35.6% and Clark County (42 miles away) at 47.7% 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 Crawford 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.
Crawford County, Geology
The ground under Crawford County
PredictedUSGS's geologic map puts all of Crawford County's mapped land in one class: moderate radon potential. The map puts 89.8% of Crawford County in the area it calls Crawford Upland/Mitchell Plain/Norman Upland and 10.1% in Wabash Lowland. USGS gives the first a radon index of 11 and the second 10, both in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Crawford Upland/Mitchell Plain/Norman Upland | Unglaciated, underlain by karsted Mississippian carbonate rocks. | Moderate | 11 | 89.8% |
| Wabash Lowland | Loess, pre-Wisconsinan glacial deposits, Pennsylvanian shale, sandstone, and carbonate bedrock. | Moderate | 10 | 10.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Crawford County beside the ground around it
Across Indiana 56.6% of the land is rated high; none of Crawford County's is. Of the 6 counties that border it, none has as large a share of moderate-potential ground; Harrison County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Crawford County, Local resources
Radon testing and mitigation in Crawford 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
Crawford County, Questions
Questions about radon in Crawford County
Are radon levels high in Crawford County?
Over the 2008 to 2017 laboratory totals, 30.0% of the radon tests reported to CDC for Crawford County, Indiana were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.7 pCi/L. Of the counties bordering it, 4 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 Washington County the smallest, 42.1%, with Harrison County at 62.4% and Dubois County at 44.1% between.
Which counties border Crawford County?
Crawford County borders 6 counties: Harrison County, IN, Perry County, IN, Meade County, KY, Orange County, IN, Dubois County, IN and Washington County, IN.
Products
Crawford County, Products
Testing a home in Crawford County
No CDC figure names Crawford County; the nearest county with one, Harrison County (20 miles away), reported 62.4% 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 Crawford 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
MonitorINKBIRD
INK-RD3 battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Crawford County, Bordering counties
Counties bordering Crawford 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 Harrison County, INEPA zone 1
62.4%at or above 4 pCi/L
Median 5.5 pCi/L · 221 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 Orange County, INEPA zone 1
43.5%at or above 4 pCi/L
Median 2.9 pCi/L · 23 tests
- Radon levels in Washington County, INEPA zone 1
42.1%at or above 4 pCi/L
Median 3.5 pCi/L · 38 tests
- Radon levels in Perry County, INEPA zone 2
23.1%at or above 4 pCi/L
Median 2.3 pCi/L · 26 tests
Crawford County, Cities and towns
Cities and towns in Crawford County
Crawford County's population has barely moved since 2020: 10,509 residents on July 1, 2025 against 10,527 then, by the Census Bureau's estimates. That works out to 34 people per square mile of land. No town dominates: Marengo, the largest, has 818 residents, 7.8% of the total. Reported testing is thin here: 10 tests over 2008 to 2017, or 1.0 for every 1,000 residents (2025 estimate), where Indiana as a whole comes to 6.2.
From Marengo to Alton, CDC publishes no figure by town: each reads Crawford County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Marengo | 818 | −0.6% | 7.8% |
| Milltownextends beyond Crawford County | 807 | +2.5% | Counted whole |
| English | 688 | +0.1% | 6.5% |
| Leavenworth | 283 | −1.7% | 2.7% |
| Alton | 27 | −3.6% | 0.3% |
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). A place that extends beyond Crawford County is counted whole, so it has no share.
Crawford County, Homes
Homes in Crawford County
Of Crawford County's 5,890 homes, 67% are detached houses, against 73% across Indiana; 29% are mobile homes. Much of Crawford County is recent building: 22% of its homes have gone up since 2000 and the middle year built is 1985, against 1976 for Indiana. Owners live in 81% of the occupied homes (Indiana: 70%), so for most households a test and a fix are their own to order.
| Homes | Crawford County | Indiana |
|---|---|---|
| Housing units | 5,890 | 2,953,344 |
| Detached houses | 67% | 73% |
| In buildings of 5 or more | 3% | 13% |
| Mobile homes | 29% | 4% |
| Built before 1960 | 18% | 32% |
| Built since 2000 | 22% | 21% |
| Middle year built | 1985 | 1976 |
| Owner-occupied | 81% | 70% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.