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Radon Levels in Eaton County, Michigan

EPA puts Eaton County in Zone 2, its middle radon zone, and 34.4% of its 3,411 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

    34.4%

    7.5 pts above MI

    Eaton
    34.4%
    Michigan
    26.9%

    3,411 tests, 2008 to 2017

  • Median result

    2.8pCi/L

    Below action level

    Eaton
    2.8 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    3,411

    8th of 82 by tests

    Eaton
    3,411
    Oakland
    16,224

    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 Michigan

    14 of 82

    Top quarter

    Eaton
    34.4%
    Lenawee
    56.7%

    By share, of 82 with 30+ tests

Read a result for Eaton County

Starts at Eaton County's median, 2.8 pCi/L

2.8pCi/L

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

EPA’s reading of 2.8 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. Eaton County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Eaton County, At a glance

Eaton County at a glance

Predicted: EPA radon zone

EPA Zone 2: moderate predicted potential

Eaton 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 Eaton County, 2008 to 2017, laboratory

Reported results by concentration band, Eaton County, 2008 to 2017, laboratory
Under 2 pCi/L: 34%2 to 4 pCi/L: 32%4 pCi/L and above: 34%

Of 3,411 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Eaton County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L1,16334.1%
2 to 4 pCi/L1,07631.5%
4 pCi/L and above1,17234.4%
What these figures count

These are the 3,411 tests reported to CDC for Eaton 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

Eaton County, Compared

Eaton County radon figures, compared

Calculated by Radon411

In Eaton County, about 3 in 10 reported tests over the 2008 to 2017 laboratory totals (1,172 of 3,411) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 1.3 points lower. Across 83 Michigan counties pooled together, 26.9% of tests reached that level, so Eaton County runs 7.5 points above its state.

Of 6 neighbours with a figure, 4 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 24.9% (Ingham County) to 49.7% (Jackson County). By share, Eaton County is 14th of 82 Michigan counties with 30 or more tests for the same period.

Half the tests came in under 2.8 pCi/L and half over it; the single highest reached 106.5 pCi/L. Below the action level, 1,163 tests (34.1%) came in under 2 pCi/L, against 46.4% statewide, and 1,076 tests (31.5%) fell between 2 and 4, against 26.7% statewide.

Zone 2 on EPA's map (predicted average between 2 and 4 pCi/L) and a 34.4% share point the same way here. USGS geology rates 100% of the county's land moderate radon potential. CDC also counts 295 tests taken after mitigation in Eaton County for the same period: tests in homes where a fix was already in.

CDC's ten-year totals for Eaton County went from 2,771 tests (2005 to 2014) to 3,411 (2008 to 2017), the share going from 36.0% to 34.4%.

Eaton County against Michigan, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Eaton County
Eaton County3,41134.4%2.8 pCi/LThis county
Michigan, pooled83 counties, pooled114,40726.9%Not pooled−7.5 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+1.3 points
Lenawee Countyhighest in the state1,90756.7%4.6 pCi/L+22.3 points
Muskegon Countylowest in the state6293.2%1.2 pCi/L−31.2 points
Jackson County, MIborders it2,96449.7%3.9 pCi/L+15.3 points
Clinton County, MIborders it2,31338.5%3.1 pCi/L+4.1 points
Ionia County, MIborders it1,39136.8%2.9 pCi/L+2.4 points
Calhoun County, MIborders it1,64936.4%3.0 pCi/L+2.0 points
Barry County, MIborders it1,61530.7%2.6 pCi/L−3.7 points
Ingham County, MIborders it2,93224.9%2.2 pCi/L−9.5 points
Where Eaton County's reported results fell, 2008 to 2017, laboratory, beside Michigan and the United States
ResultEaton County testsEaton County shareMichigan shareU.S. shareAgainst Michigan
Under 2 pCi/L1,16334.1%46.4%39.6%−12.3 points
2 to 4 pCi/L1,07631.5%26.7%24.7%+4.8 points
4 pCi/L and above1,17234.4%26.9%35.7%+7.5 points
Eaton County ranked among the 82 Michigan counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Otsego County9 of 821,08038.2%3.2 pCi/L
Ionia County10 of 821,39136.8%2.9 pCi/L
Calhoun County11 of 821,64936.4%3.0 pCi/L
Iron County12 of 8226536.2%2.6 pCi/L
Tuscola County13 of 8236935.5%2.6 pCi/L
Eaton County14 of 823,41134.4%2.8 pCi/L
St. Joseph County15 of 821,06834.1%2.9 pCi/L
Lapeer County16 of 8264933.4%2.7 pCi/L
Kalamazoo County17 of 824,10033.3%2.8 pCi/L
Shiawassee County18 of 821,51531.6%2.5 pCi/L
Barry County19 of 821,61530.7%2.6 pCi/L
Eaton County ten-year laboratory totals, against Michigan's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestMichigan, pooledChange from the row before
2008 to 20173,41134.4%2.8 pCi/L106.5 pCi/L26.9%−0.6 points
2007 to 20163,24935.0%2.9 pCi/L106.5 pCi/L26.8%−0.3 points
2006 to 20153,09435.3%2.9 pCi/L106.5 pCi/L26.8%−0.7 points
2005 to 20142,77136.0%2.9 pCi/L106.5 pCi/L26.2%First on file

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

Eaton County, State data

Michigan's own radon test data

Measured

What Michigan's own agencies publish about radon tests in Eaton County, with their period. These are not CDC's figures and are never added to them.

MeasuredState figures, not CDC's

What Michigan EGLE reports for the ZIP codes in Eaton County

Michigan EGLE publishes its figures by ZIP code, not by county. These are the 19 ZIP codes that lie wholly or partly in Eaton County, each with the state's own figures for it. Period: About 10 years to 2026-05-15.

ZIP codes in Eaton County
ZIP codeWhat the state reports
4881344% greater than 4 pCi/L, median 3.6 pCi/L, 407 tests
4882130% greater than 4 pCi/L, median 2.6 pCi/L, 79 tests
4882737% greater than 4 pCi/L, median 3.3 pCi/L, 223 tests
4883727% greater than 4 pCi/L, median 2.6 pCi/L, 286 tests
4884223% greater than 4 pCi/L, median 1.8 pCi/L, 148 tests
4884924% greater than 4 pCi/L, median 2.5 pCi/L, 58 tests
4886131% greater than 4 pCi/L, median 2.4 pCi/L, 16 tests
4887625% greater than 4 pCi/L, median 2.0 pCi/L, 36 tests
4889043% greater than 4 pCi/L, median 3.6 pCi/L, 14 tests
4889733% greater than 4 pCi/L, median 2.7 pCi/L, 18 tests
4890617% greater than 4 pCi/L, median 1.5 pCi/L, 163 tests
4891121% greater than 4 pCi/L, median 2.2 pCi/L, 121 tests
4891716% greater than 4 pCi/L, median 2.1 pCi/L, 400 tests
4902141% greater than 4 pCi/L, median 2.9 pCi/L, 63 tests
4907313% greater than 4 pCi/L, median 2.3 pCi/L, 45 tests
4907630% greater than 4 pCi/L, median 2.8 pCi/L, 54 tests
4909636% greater than 4 pCi/L, median 3.2 pCi/L, 45 tests
4926414% greater than 4 pCi/L, median 1.9 pCi/L, 7 tests
4928438% greater than 4 pCi/L, median 3.0 pCi/L, 8 tests
  • EGLE's figures cover first-time tests only, from organizations willing to provide data.
  • EGLE does not publish figures for a ZIP code with fewer than 5 test results.
  • EGLE says the map is not intended to decide whether a home should be tested: all homes should be tested.
  • ZIP code boundaries are postal delivery areas, not legal or administrative boundaries.
  • A ZIP code that crosses the county line is listed whole; its figures cover all of it.

Measured: Michigan EGLE data, About 10 years to 2026-05-15.

Eaton County, Geology

The ground under Eaton County

Predicted

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

USGS's geologic areas under Eaton County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
South-Central Michigan BasinSandy and silty glacial deposits derived from sandstones, gray shales, limestones, and dolomites.Moderate10100%

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

Eaton County beside the ground around it

Across Michigan 9.6% of the land is rated high; none of Eaton County's is. Of the 6 counties that border it, 3 have more high-potential ground, Jackson County the most at 90.6%.

Share of land by USGS radon potential: Eaton County, the 6 counties bordering it and Michigan
AreaEPA zoneLow potentialModerate potentialHigh potential
Eaton CountyZone 2None100%None
Ingham CountyZone 2None100%None
Barry CountyZone 2None92.9%7.1%
Ionia CountyZone 2None100%None
Clinton CountyZone 26.0%94.0%None
Calhoun CountyZone 1None25.0%75.0%
Jackson CountyZone 1None9.4%90.6%
Michigan83 counties, pooled by land areaVaries45.0%44.3%9.6%

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

Local help

Eaton County, Local resources

Radon testing and mitigation in Eaton County

Listed radon professionals by town: Lansing

What Michigan's program says
Phone
800-723-6642
Email
Radon@Michigan.gov
Licensing of radon professionals
Michigan does not license or regulate radon testing and mitigation contractors.

What it means

Eaton County, Questions

Questions about radon in Eaton County

Are radon levels high in Eaton County?

Over the 2008 to 2017 laboratory totals, 34.4% of the radon tests reported to CDC for Eaton County, Michigan were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.8 pCi/L. Of 82 Michigan counties with 30 or more tests for the same period, 13 reported a higher share; pooled, the state comes to 26.9%.

Which counties border Eaton County?

Eaton County borders 6 counties: Ingham County, Barry County, Ionia County, Clinton County, Calhoun County and Jackson County.

Products

Eaton County, Products

Testing a home in Eaton County

In Eaton County, 34.4% of 3,411 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 26.9% pooled across Michigan. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Eaton County; a long-term test tells the year-round average.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Eaton County homes, compared

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Eaton County, Bordering counties

Counties bordering Eaton County

Calculated by Radon411

Eaton County, Cities and towns

Cities and towns in Eaton County

Eaton County's population has barely moved since 2020: 109,581 residents on July 1, 2025 against 109,174 then, by the Census Bureau's estimates. That works out to 191 people per square mile of land. Lansing, the largest place on its list (113,884 residents in all), extends beyond Eaton County, so no share of the total is worked out for it. Testing is reported here more often than across the state: CDC's 3,411 reported tests for 2008 to 2017 come to 31.1 for every 1,000 residents (2025 estimate), against 11.3 for Michigan.

From Lansing to Sunfield, CDC publishes no figure by town: each reads Eaton County's.

The cities and towns in Eaton County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Lansingextends beyond Eaton County113,884+1.2%Counted whole
Charlotte9,305+0.2%8.5%
Grand Ledgeextends beyond Eaton County7,853+0.7%Counted whole
Eaton Rapids5,218+0.2%4.8%
Potterville3,135+2.6%2.9%
Olivet1,525−6.4%1.4%
Bellevue1,348+0.1%1.2%
Dimondale1,183+0.3%1.1%
Vermontville754+0.8%0.7%
Mulliken550Level0.5%
Sunfield543+0.9%0.5%

11 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 Eaton County is counted whole, so it has no share.

Eaton County, Homes

Homes in Eaton County

Of Eaton County's 47,650 homes, 69% are detached houses, against 72% across Michigan; 17% are in buildings of five or more homes. Half of its homes were built before 1976, close to Michigan's 1972: 26% date from before 1960 and 16% from 2000 or later. 74% of occupied homes are lived in by their owner (Michigan: 73%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Eaton County, Michigan, 2019 to 2023
HomesEaton CountyMichigan
Housing units47,6504,599,683
Detached houses69%72%
In buildings of 5 or more17%13%
Mobile homes5%5%
Built before 196026%36%
Built since 200016%15%
Middle year built19761972
Owner-occupied74%73%

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