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Radon Levels in Jasper County, Indiana

EPA puts Jasper County in Zone 2, its middle radon zone, and most reported tests there come back low, though 14.1% of 71 (2008 to 2017, laboratory totals) reached 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

    14.1%

    24.8 pts below IN

    Jasper
    14.1%
    Indiana
    38.9%

    71 tests, 2008 to 2017

  • Median result

    1.2pCi/L

    Below action level

    Jasper
    1.2 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    71

    54th of 69 by tests

    Jasper
    71
    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

    69 of 69

    Lowest quarter

    Jasper
    14.1%
    Miami
    63.3%

    By share, of 69 with 30+ tests

Read a result for Jasper County

Starts at Jasper County's median, 1.2 pCi/L

1.2pCi/L

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

EPA’s reading of 1.2 pCi/L

Below 2 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 below 2 pCi/L, the level at which EPA says a fix should be considered. Jasper County's median reported result, 2008 to 2017.

Interpret this reading

The data

Jasper County, At a glance

Jasper County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Jasper 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: High across 54% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Jasper County, 2008 to 2017, laboratory

Reported results by concentration band, Jasper County, 2008 to 2017, laboratory
Under 2 pCi/L: 68%2 to 4 pCi/L: 18%4 pCi/L and above: 14%

Of 71 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Jasper County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L4867.6%
2 to 4 pCi/L1318.3%
4 pCi/L and above1014.1%
What these figures count

These are the 71 tests reported to CDC for Jasper 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

Jasper County, Compared

Jasper County radon figures, compared

Calculated by Radon411

Jasper County reports fewer high tests than Indiana overall. 14.1% of its 71 tests over the 2008 to 2017 laboratory totals were at or above 4 pCi/L. That is 24.8 points below the 38.9% pooled from 92 Indiana counties.

Ordered from highest share down, it comes 69th of 69 Indiana counties with 30 or more tests for the same period. Nationally, every county with a figure for the same period pools to 35.7%; Jasper County sits 21.6 points below it.

Next door, the shares run from 23.5% in Lake County to 61.8% in Benton County. Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 14.1% share point the same way here.

Half the tests came in under 1.2 pCi/L and half over it; the single highest reached 14.5 pCi/L. The rest split 67.6% under 2 pCi/L and 18.3% from 2 to 4 (Indiana: 32.8% and 28.3%).

CDC's ten-year totals for Jasper County went from 20 tests (2005 to 2014) to 71 (2008 to 2017), the share going from 25.0% to 14.1%.

Jasper County against Indiana, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Jasper County
Jasper County7114.1%1.2 pCi/LThis county
Indiana, pooled92 counties, pooled43,14838.9%Not pooled+24.8 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+21.6 points
Miami Countyhighest in the state3063.3%5.3 pCi/L+49.2 points
Warrick Countylowest in the state56120.9%1.8 pCi/L+6.8 points
Benton County, INborders it3461.8%5.7 pCi/L+47.7 points
LaPorte County, INborders it79258.2%5.0 pCi/L+44.1 points
Porter County, INborders it1,13646.5%3.5 pCi/L+32.4 points
White County, INborders it4235.7%2.7 pCi/L+21.6 points
Pulaski County, INborders it2231.8%2.3 pCi/L+17.7 points
Lake County, INborders it1,19823.5%1.8 pCi/L+9.4 points
Newton County, INborders it1612.5%1.6 pCi/L−1.6 points
Starke County, INborders it244.2%1.6 pCi/L−9.9 points
Where Jasper County's reported results fell, 2008 to 2017, laboratory, beside Indiana and the United States
ResultJasper County testsJasper County shareIndiana shareU.S. shareAgainst Indiana
Under 2 pCi/L4867.6%32.8%39.6%+34.8 points
2 to 4 pCi/L1318.3%28.3%24.7%−10.0 points
4 pCi/L and above1014.1%38.9%35.7%−24.8 points
Jasper 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
Jasper County ten-year laboratory totals, against Indiana's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestIndiana, pooledChange from the row before
2008 to 20177114.1%1.2 pCi/L14.5 pCi/L38.9%+1.0 points
2007 to 20166113.1%1.2 pCi/L14.5 pCi/L39.2%−16.9 points
2006 to 20153030.0%2.0 pCi/L14.5 pCi/L39.6%+5.0 points
2005 to 20142025.0%1.5 pCi/L14.5 pCi/L39.3%First on file

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

Jasper County, Geology

The ground under Jasper County

Predicted

USGS's geologic map splits Jasper County: 54.0% of its land is high radon potential and 46.0% moderate. The map puts 54.0% of Jasper County in the area it calls Huron-Erie Lobe and 46.0% in Kankakee Outwash and Lacustrine Plain. USGS gives the first a radon index of 13, in the high band (12 to 17), and the second 10, in the moderate band (9 to 11).

USGS's geologic areas under Jasper County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Huron-Erie LobeCalcareous clayey and loamy glacial deposits derived from marine carbonate and clastic sedimentary rocks.High1354.0%
Kankakee Outwash and Lacustrine PlainMoraine deposits, outwash and dune sands.Moderate1046.0%

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

Jasper County beside the ground around it

On high-potential ground Jasper County is close to Indiana as a whole: 54.0% of its land against 56.6%. Of the 8 counties that border it, 2 have more high-potential ground, Benton County the most at 100%.

Share of land by USGS radon potential: Jasper County, the 8 counties bordering it and Indiana
AreaEPA zoneLow potentialModerate potentialHigh potential
Jasper CountyZone 2None46.0%54.0%
Newton CountyZone 2None50.9%49.1%
Pulaski CountyZone 2None56.9%43.1%
White CountyZone 1None0.7%99.3%
Lake CountyZone 2None99.3%None
Porter CountyZone 2None99.8%None
Benton CountyZone 1NoneNone100%
Starke CountyZone 2None98.5%1.5%
LaPorte 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

Jasper County, Local resources

Radon testing and mitigation in Jasper County

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

Jasper County, Questions

Questions about radon in Jasper County

Are radon levels high in Jasper County?

Over the 2008 to 2017 laboratory totals, 14.1% of the radon tests reported to CDC for Jasper County, Indiana were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.2 pCi/L. Of 69 Indiana counties with 30 or more tests for the same period, 68 reported a higher share; pooled, the state comes to 38.9%.

Which counties border Jasper County?

Jasper County borders 8 counties: Newton County, Pulaski County, White County, Lake County, Porter County, Benton County, Starke County and LaPorte County.

Products

Jasper County, Products

Testing a home in Jasper County

In Jasper County, 14.1% of 71 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 Jasper County; a long-term test tells the year-round average.

Test kits and monitors3

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Best radon monitors for Jasper County homes, compared

Explore

Jasper County, Bordering counties

Counties bordering Jasper County

Calculated by Radon411

Jasper County, Cities and towns

Cities and towns in Jasper County

The Census Bureau estimates 33,894 residents in Jasper County for July 1, 2025, 983 more than in 2020 (+3.0%). That works out to 61 people per square mile of land. No town dominates: Rensselaer, the largest, has 5,681 residents, 16.8% of the total. Reported testing is thin here: 71 tests over 2008 to 2017, or 2.1 for every 1,000 residents (2025 estimate), where Indiana as a whole comes to 6.2.

From Rensselaer to De Motte, CDC publishes no figure by town: each reads Jasper County's.

The 3 largest cities and towns in Jasper County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Rensselaer5,681−0.6%16.8%
Remington1,392+3.0%4.1%
Wheatfield931+3.2%2.7%
  • De Motte

4 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).

Jasper County, Homes

Homes in Jasper County

Jasper County is a place of houses on their own lots: 83% of its 13,708 homes are detached single-family houses, against 73% across Indiana. Half of its homes were built before 1983, close to Indiana's 1976: 25% date from before 1960 and 24% from 2000 or later. Owners live in 83% of the occupied homes (Indiana: 70%), so for most households a test and a fix are their own to order.

Homes in Jasper County, Indiana, 2019 to 2023
HomesJasper CountyIndiana
Housing units13,7082,953,344
Detached houses83%73%
In buildings of 5 or more4%13%
Mobile homes4%4%
Built before 196025%32%
Built since 200024%21%
Middle year built19831976
Owner-occupied83%70%

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