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Radon Levels in Lawrence County, Indiana

EPA puts Lawrence County in Zone 1, its highest radon zone, and 35.6% of its 267 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

    35.6%

    3.3 pts below IN

    Lawrence
    35.6%
    Indiana
    38.9%

    267 tests, 2008 to 2017

  • Median result

    2.7pCi/L

    Below action level

    Lawrence
    2.7 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    267

    23rd of 69 by tests

    Lawrence
    267
    St. Joseph
    7,346

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 1

    Highest potential

    1. Zone 1
    2. 2
    3. 3

    1 highest, 3 lowest

    EPA predicts over 4 pCi/L indoors

  • Rank in Indiana

    50 of 69

    Middle half

    Lawrence
    35.6%
    Miami
    63.3%

    By share, of 69 with 30+ tests

Read a result for Lawrence County

Starts at Lawrence County's median, 2.7 pCi/L

2.7pCi/L

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

EPA’s reading of 2.7 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. Lawrence County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Lawrence County, At a glance

Lawrence County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Lawrence County in and predicts an average indoor of greater than 4 pCi/L (greater than 150 Bq/m³) across the county. That is one forecast for the whole county, not a reading of any address in it; homes above EPA's turn up in all three zones.

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 Lawrence County, 2008 to 2017, laboratory

Reported results by concentration band, Lawrence County, 2008 to 2017, laboratory
Under 2 pCi/L: 39%2 to 4 pCi/L: 25%4 pCi/L and above: 36%

Of 267 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Lawrence County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L10439.0%
2 to 4 pCi/L6825.5%
4 pCi/L and above9535.6%
What these figures count

These are the 267 tests reported to CDC for Lawrence 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

Lawrence County, Compared

Lawrence County radon figures, compared

Calculated by Radon411

In Lawrence County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (95 of 267) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 0.1 points lower. Across 92 Indiana counties pooled together, 38.9% of tests reached that level, so Lawrence County runs 3.3 points below its state.

Of 4 neighbours with a figure, 1 reported a larger share at or above 4 pCi/L and 3 a smaller one; the spread is 27.3% (Jackson County) to 42.1% (Washington County). By share, Lawrence County is 50th of 69 Indiana counties with 30 or more tests for the same period.

Half the tests came in under 2.7 pCi/L and half over it; the single highest reached 57.7 pCi/L. Below the action level, 104 tests (39.0%) came in under 2 pCi/L, against 32.8% statewide, and 68 tests (25.5%) fell between 2 and 4, against 28.3% statewide.

Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 35.6% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential. CDC also counts 27 tests taken after mitigation in Lawrence County for the same period: tests in homes where a fix was already in.

CDC's ten-year totals for Lawrence County went from 175 tests (2005 to 2014) to 267 (2008 to 2017), the share going from 41.1% to 35.6%.

Lawrence County against Indiana, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Lawrence County
Lawrence County26735.6%2.7 pCi/LThis county
Indiana, pooled92 counties, pooled43,14838.9%Not pooled+3.3 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+0.1 points
Miami Countyhighest in the state3063.3%5.3 pCi/L+27.7 points
Jasper Countylowest in the state7114.1%1.2 pCi/L−21.5 points
Orange County, INborders it2343.5%2.9 pCi/L+7.9 points
Washington County, INborders it3842.1%3.5 pCi/L+6.5 points
Martin County, INborders it837.5%3.7 pCi/L+1.9 points
Monroe County, INborders it2,37534.2%2.8 pCi/L−1.4 points
Greene County, INborders it4932.7%3.0 pCi/L−2.9 points
Jackson County, INborders it8827.3%2.8 pCi/L−8.3 points
Where Lawrence County's reported results fell, 2008 to 2017, laboratory, beside Indiana and the United States
ResultLawrence County testsLawrence County shareIndiana shareU.S. shareAgainst Indiana
Under 2 pCi/L10439.0%32.8%39.6%+6.2 points
2 to 4 pCi/L6825.5%28.3%24.7%−2.8 points
4 pCi/L and above9535.6%38.9%35.7%−3.3 points
Lawrence 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
Johnson County45 of 6955639.4%2.9 pCi/L
Owen County46 of 6911039.1%2.8 pCi/L
Hamilton County47 of 693,47937.6%2.7 pCi/L
Tippecanoe County48 of 691,21836.8%2.7 pCi/L
White County49 of 694235.7%2.7 pCi/L
Lawrence County50 of 6926735.6%2.7 pCi/L
Posey County51 of 6921535.3%2.8 pCi/L
Ripley County52 of 696835.3%2.9 pCi/L
Jennings County53 of 695735.1%2.8 pCi/L
Daviess County54 of 695834.5%3.1 pCi/L
Putnam County55 of 6911934.5%2.7 pCi/L
Lawrence County ten-year laboratory totals, against Indiana's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestIndiana, pooledChange from the row before
2008 to 201726735.6%2.7 pCi/L57.7 pCi/L38.9%−4.4 points
2007 to 201622540.0%3.1 pCi/L57.7 pCi/L39.2%+0.1 points
2006 to 201521839.9%3.2 pCi/L50.8 pCi/L39.6%−1.2 points
2005 to 201417541.1%3.2 pCi/L50.8 pCi/L39.3%First on file

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

Lawrence County, Geology

The ground under Lawrence County

Predicted

USGS's geologic map puts all of Lawrence County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Crawford Upland/Mitchell Plain/Norman Upland, to which USGS gives a radon index of 11, in the moderate band (9 to 11).

USGS's geologic areas under Lawrence County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Crawford Upland/Mitchell Plain/Norman UplandUnglaciated, underlain by karsted Mississippian carbonate rocks.Moderate11100%

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

Lawrence County beside the ground around it

Across Indiana 56.6% of the land is rated high; none of Lawrence County's is. Of the 6 counties that border it, 1 has more high-potential ground, Jackson County the most at 20.4%.

Share of land by USGS radon potential: Lawrence County, the 6 counties bordering it and Indiana
AreaEPA zoneLow potentialModerate potentialHigh potential
Lawrence CountyZone 1None100%None
Orange CountyZone 1None100%None
Martin CountyZone 2None100%None
Jackson CountyZone 2None79.6%20.4%
Washington CountyZone 1None100%None
Monroe CountyZone 1None100%None
Greene 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

Lawrence County, Local resources

Radon testing and mitigation in Lawrence 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

Lawrence County, Questions

Questions about radon in Lawrence County

Are radon levels high in Lawrence County?

Over the 2008 to 2017 laboratory totals, 35.6% of the radon tests reported to CDC for Lawrence County, Indiana were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.7 pCi/L. Of 69 Indiana counties with 30 or more tests for the same period, 49 reported a higher share; pooled, the state comes to 38.9%.

Which counties border Lawrence County?

Lawrence County borders 6 counties: Orange County, Martin County, Jackson County, Washington County, Monroe County and Greene County.

Products

Lawrence County, Products

Testing a home in Lawrence County

In Lawrence County, 35.6% of 267 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 38.9% pooled across Indiana. In Zone 1 the year-round level in Lawrence County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.

Test kits and monitors3

See every kit and monitor

Lawrence County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Lawrence County

Explore

Lawrence County, Bordering counties

Counties bordering Lawrence County

Calculated by Radon411

Lawrence County, Cities and towns

Cities and towns in Lawrence County

The Census Bureau estimates 45,568 residents in Lawrence County for July 1, 2025, 555 more than in 2020 (+1.2%). That works out to 101 people per square mile of land. Its largest town, Bedford, has 13,962 residents, 30.6% of the total. Together its 3 incorporated places hold 42.0% of those residents; the other 58.0% live outside any of them. CDC's 267 reported tests for 2008 to 2017 work out to 5.9 per 1,000 residents (2025 estimate), close to Indiana's 6.2.

From Bedford to Oolitic, CDC publishes no figure by town: each reads Lawrence County's.

The cities and towns in Lawrence County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Bedford13,962+1.0%30.6%
Mitchell4,019+2.4%8.8%
Oolitic1,142+0.7%2.5%

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).

Lawrence County, Homes

Homes in Lawrence County

Lawrence County is a place of houses on their own lots: 78% of its 20,530 homes are detached single-family houses, against 73% across Indiana. Half of its homes were built before 1975, close to Indiana's 1976: 34% date from before 1960 and 19% from 2000 or later. Owners live in 80% of the occupied homes (Indiana: 70%), so for most households a test and a fix are their own to order.

Homes in Lawrence County, Indiana, 2019 to 2023
HomesLawrence CountyIndiana
Housing units20,5302,953,344
Detached houses78%73%
In buildings of 5 or more7%13%
Mobile homes10%4%
Built before 196034%32%
Built since 200019%21%
Middle year built19751976
Owner-occupied80%70%

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