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Radon Levels in Vanderburgh County, Indiana

EPA puts Vanderburgh County in Zone 2, its middle radon zone, and 24.4% of its 1,505 reported radon tests (2008 to 2017, laboratory totals) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

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  • Share at 4+ pCi/L

    24.4%

    14.5 pts below IN

    Vanderburgh
    24.4%
    Indiana
    38.9%

    1,505 tests, 2008 to 2017

  • Median result

    2.4pCi/L

    Below action level

    Vanderburgh
    2.4 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    1,505

    8th of 69 by tests

    Vanderburgh
    1,505
    St. Joseph
    7,346

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 2

    Moderate potential

    1. 1
    2. Zone 2
    3. 3

    1 highest, 3 lowest

    EPA predicts 2 to 4 pCi/L indoors

  • Rank in Indiana

    66 of 69

    Lowest quarter

    Vanderburgh
    24.4%
    Miami
    63.3%

    By share, of 69 with 30+ tests

Read a result for Vanderburgh County

Starts at Vanderburgh County's median, 2.4 pCi/L

2.4pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 2.4 pCi/L

Between 2 and 4 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 4 and aboveEPA says fix it

This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Vanderburgh County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Vanderburgh County, At a glance

Vanderburgh County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Vanderburgh County is a county: EPA's forecast for it as a whole is an average indoor of 2 to 4 pCi/L (75 to 150 Bq/m³). It describes no single address, and homes above EPA's are found in every zone, this one included.

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 Vanderburgh County, 2008 to 2017, laboratory

Reported results by concentration band, Vanderburgh County, 2008 to 2017, laboratory
Under 2 pCi/L: 42%2 to 4 pCi/L: 34%4 pCi/L and above: 24%

Of 1,505 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Vanderburgh County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L62641.6%
2 to 4 pCi/L51234.0%
4 pCi/L and above36724.4%
What these figures count

These are the 1,505 tests reported to CDC for Vanderburgh County over 2008 to 2017 (laboratory totals), many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.

Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).

How to read these figures

Vanderburgh County, Compared

Vanderburgh County radon figures, compared

Calculated by Radon411

Vanderburgh County's 1,505 reported tests over the 2008 to 2017 laboratory totals had a middle value of 2.4 pCi/L and a maximum of 38.2 pCi/L, and 24.4% reached 4 pCi/L. Indiana as a whole (92 Indiana counties, pooled) comes to 38.9%: 14.5 points higher than here.

Among its state's counties it ranks 66th of 69 Indiana counties with 30 or more tests for the same period. Statewide for the same period, Miami County reported the highest share (63.3%) and Jasper County the lowest (14.1%).

Below the action level, 626 tests (41.6%) came in under 2 pCi/L, against 32.8% statewide, and 512 tests (34.0%) fell between 2 and 4, against 28.3% statewide. CDC's ten-year totals for Vanderburgh County went from 1,009 tests (2005 to 2014) to 1,505 (2008 to 2017), the share going from 24.7% to 24.4%.

EPA's 1993 zone map puts Vanderburgh County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.

Next door, the shares run from 20.9% in Warrick County to 43.3% in Gibson County, with Henderson County, KY and Warrick County below Vanderburgh County.

CDC also counts 117 tests taken after mitigation in Vanderburgh County for the same period: tests in homes where a fix was already in.

Vanderburgh County against Indiana, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Vanderburgh County
Vanderburgh County1,50524.4%2.4 pCi/LThis county
Indiana, pooled92 counties, pooled43,14838.9%Not pooled+14.5 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+11.3 points
Miami Countyhighest in the state3063.3%5.3 pCi/L+38.9 points
Jasper Countylowest in the state7114.1%1.2 pCi/L−10.3 points
Gibson County, INborders it12043.3%3.4 pCi/L+18.9 points
Posey County, INborders it21535.3%2.8 pCi/L+10.9 points
Henderson County, KYborders it5424.1%2.3 pCi/L−0.3 points
Warrick County, INborders it56120.9%1.8 pCi/L−3.5 points
Where Vanderburgh County's reported results fell, 2008 to 2017, laboratory, beside Indiana and the United States
ResultVanderburgh County testsVanderburgh County shareIndiana shareU.S. shareAgainst Indiana
Under 2 pCi/L62641.6%32.8%39.6%+8.8 points
2 to 4 pCi/L51234.0%28.3%24.7%+5.7 points
4 pCi/L and above36724.4%38.9%35.7%−14.5 points
Vanderburgh County ranked among the 69 Indiana counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Decatur County59 of 696333.3%2.8 pCi/L
Greene County60 of 694932.7%3.0 pCi/L
Dearborn County61 of 6913630.1%2.6 pCi/L
St. Joseph County62 of 697,34629.3%2.7 pCi/L
Franklin County63 of 695028.0%2.1 pCi/L
Jackson County64 of 698827.3%2.8 pCi/L
Brown County65 of 6911225.9%2.8 pCi/L
Vanderburgh County66 of 691,50524.4%2.4 pCi/L
Lake County67 of 691,19823.5%1.8 pCi/L
Warrick County68 of 6956120.9%1.8 pCi/L
Jasper County69 of 697114.1%1.2 pCi/L
Vanderburgh County ten-year laboratory totals, against Indiana's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestIndiana, pooledChange from the row before
2008 to 20171,50524.4%2.4 pCi/L38.2 pCi/L38.9%−0.6 points
2007 to 20161,33125.0%2.4 pCi/L38.2 pCi/L39.2%+0.2 points
2006 to 20151,14624.8%2.4 pCi/L38.2 pCi/L39.6%+0.1 points
2005 to 20141,00924.7%2.4 pCi/L38.2 pCi/L39.3%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Vanderburgh County, Geology

The ground under Vanderburgh County

Predicted

USGS's geologic map puts all of Vanderburgh County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Wabash Lowland, to which USGS gives a radon index of 10, in the moderate band (9 to 11).

USGS's geologic areas under Vanderburgh County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Wabash LowlandLoess, pre-Wisconsinan glacial deposits, Pennsylvanian shale, sandstone, and carbonate bedrock.Moderate1099.7%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Vanderburgh County beside the ground around it

Across Indiana 56.6% of the land is rated high; none of Vanderburgh County's is. Of the 4 counties that border it, none has as large a share of moderate-potential ground; Henderson County, KY comes nearest at 100%.

Share of land by USGS radon potential: Vanderburgh County, the 4 counties bordering it and Indiana
AreaEPA zoneLow potentialModerate potentialHigh potential
Vanderburgh CountyZone 2None100%None
Henderson County, KYZone 2None100%None
Posey CountyZone 2None100%None
Warrick CountyZone 2None100%None
Gibson CountyZone 2None100%None
Indiana92 counties, pooled by land areaVariesNone43.4%56.6%

The map rates the ground, not the air in any home.

Local help

Vanderburgh County, Local resources

Radon testing and mitigation in Vanderburgh County

Listed radon businesses with an address in Vanderburgh County:

Listed radon professionals by town: Evansville

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

Vanderburgh County, Questions

Questions about radon in Vanderburgh County

Are radon levels high in Vanderburgh County?

Over the 2008 to 2017 laboratory totals, 24.4% of the radon tests reported to CDC for Vanderburgh County, Indiana were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.4 pCi/L. Of 69 Indiana counties with 30 or more tests for the same period, 65 reported a higher share; pooled, the state comes to 38.9%.

Which counties border Vanderburgh County?

Vanderburgh County borders 4 counties: Henderson County, KY, Posey County, IN, Warrick County, IN and Gibson County, IN.

Products

Vanderburgh County, Products

Testing a home in Vanderburgh County

In Vanderburgh County, 24.4% of 1,505 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 38.9% pooled across Indiana. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Vanderburgh County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Vanderburgh County homes, compared

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Vanderburgh County, Bordering counties

Counties bordering Vanderburgh County

Calculated by Radon411

Vanderburgh County, Cities and towns

Cities and towns in Vanderburgh County

The Census Bureau estimates 181,995 residents in Vanderburgh County for July 1, 2025, 1,654 more than in 2020 (+0.9%). That works out to 780 people per square mile of land. Evansville alone is home to 116,176 of them, 63.8% of the total. Together its 2 incorporated places hold 64.6% of those residents; the other 35.4% live outside any of them. CDC's 1,505 reported tests for 2008 to 2017 work out to 8.3 per 1,000 residents (2025 estimate), close to Indiana's 6.2.

From Evansville to Darmstadt, CDC publishes no figure by town: each reads Vanderburgh County's.

The cities and towns in Vanderburgh County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Evansville116,176−1.0%63.8%
Darmstadt1,441+4.1%0.8%

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).

Vanderburgh County, Homes

Homes in Vanderburgh County

Of Vanderburgh County's 84,809 homes, 70% are detached houses, against 73% across Indiana; 17% are in buildings of five or more homes. Half of its homes were built before 1970, close to Indiana's 1976: 41% date from before 1960 and 16% from 2000 or later. 64% 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 in Vanderburgh County, Indiana, 2019 to 2023
HomesVanderburgh CountyIndiana
Housing units84,8092,953,344
Detached houses70%73%
In buildings of 5 or more17%13%
Mobile homes3%4%
Built before 196041%32%
Built since 200016%21%
Middle year built19701976
Owner-occupied64%70%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.