Skip to content

Locations and reports

Radon Levels in Manistee County, Michigan

EPA puts Manistee County in Zone 3, its lowest radon zone, and 16.5% of its 388 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

  • Share at 4+ pCi/L

    16.5%

    10.4 pts below MI

    Manistee
    16.5%
    Michigan
    26.9%

    388 tests, 2008 to 2017

  • Median result

    1.6pCi/L

    Below action level

    Manistee
    1.6 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    388

    52nd of 82 by tests

    Manistee
    388
    Oakland
    16,224

    Reported to CDC before any fix, 2008 to 2017

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

  • Rank in Michigan

    44 of 82

    Middle half

    Manistee
    16.5%
    Lenawee
    56.7%

    By share, of 82 with 30+ tests

Read a result for Manistee County

Starts at Manistee County's median, 1.6 pCi/L

1.6pCi/L

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

EPA’s reading of 1.6 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. Manistee County's median reported result, 2008 to 2017.

The data

Manistee County, At a glance

Manistee County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Manistee County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

USGS geologic potential: Low across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Manistee County, 2008 to 2017, laboratory
Under 2 pCi/L: 58%2 to 4 pCi/L: 26%4 pCi/L and above: 16%

Of 388 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Manistee County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L22457.7%
2 to 4 pCi/L10025.8%
4 pCi/L and above6416.5%
What these figures count

These are the 388 tests reported to CDC for Manistee 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

Manistee County, Compared

Manistee County radon figures, compared

Calculated by Radon411

Manistee County's 388 reported tests over the 2008 to 2017 laboratory totals had a middle value of 1.6 pCi/L and a maximum of 16.3 pCi/L, and 16.5% reached 4 pCi/L. Michigan as a whole (83 Michigan counties, pooled) comes to 26.9%: 10.4 points higher than here.

Among its state's counties it ranks 44th of 82 Michigan counties with 30 or more tests for the same period. Statewide for the same period, Lenawee County reported the highest share (56.7%) and Muskegon County the lowest (3.2%).

Below the action level, 224 tests (57.7%) came in under 2 pCi/L, against 46.4% statewide, and 100 tests (25.8%) fell between 2 and 4, against 26.7% statewide. CDC's ten-year totals for Manistee County went from 337 tests (2005 to 2014) to 388 (2008 to 2017), the share going from 13.1% to 16.5%.

EPA's 1993 zone map puts Manistee County in Zone 3, a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.

Next door, the shares run from 6.3% in Mason County to 14.9% in Lake County, with Lake County, Grand Traverse County and Wexford County below Manistee County.

CDC also counts 12 tests taken after mitigation in Manistee County for the same period: tests in homes where a fix was already in.

Manistee County against Michigan, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Manistee County
Manistee County38816.5%1.6 pCi/LThis county
Michigan, pooled83 counties, pooled114,40726.9%Not pooled+10.4 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+19.2 points
Lenawee Countyhighest in the state1,90756.7%4.6 pCi/L+40.2 points
Muskegon Countylowest in the state6293.2%1.2 pCi/L−13.3 points
Lake County, MIborders it9414.9%1.4 pCi/L−1.6 points
Grand Traverse County, MIborders it1,61411.5%1.4 pCi/L−5.0 points
Wexford County, MIborders it6219.7%1.5 pCi/L−6.8 points
Benzie County, MIborders it3348.7%1.3 pCi/L−7.8 points
Mason County, MIborders it4626.3%1.1 pCi/L−10.2 points
Where Manistee County's reported results fell, 2008 to 2017, laboratory, beside Michigan and the United States
ResultManistee County testsManistee County shareMichigan shareU.S. shareAgainst Michigan
Under 2 pCi/L22457.7%46.4%39.6%+11.3 points
2 to 4 pCi/L10025.8%26.7%24.7%−0.9 points
4 pCi/L and above6416.5%26.9%35.7%−10.4 points
Manistee 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
Saginaw County39 of 823,03717.0%1.7 pCi/L
Ottawa County40 of 822,54616.8%1.6 pCi/L
Gratiot County41 of 8245716.8%1.7 pCi/L
Sanilac County42 of 8232516.6%1.6 pCi/L
Kent County43 of 828,44916.5%1.8 pCi/L
Manistee County44 of 8238816.5%1.6 pCi/L
Isabella County45 of 8287016.4%1.6 pCi/L
Alger County46 of 8218916.4%1.2 pCi/L
Gladwin County47 of 8224715.4%1.3 pCi/L
Emmet County48 of 8281515.2%1.6 pCi/L
Schoolcraft County49 of 826615.2%0.6 pCi/L
Manistee County ten-year laboratory totals, against Michigan's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestMichigan, pooledChange from the row before
2008 to 201738816.5%1.6 pCi/L16.3 pCi/L26.9%+3.7 points
2007 to 201629712.8%1.5 pCi/L9.9 pCi/L26.8%+0.8 points
2006 to 201528412.0%1.4 pCi/L9.9 pCi/L26.8%−1.1 points
2005 to 201433713.1%1.3 pCi/L11.4 pCi/L26.2%First on file

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

Manistee County, State data

Michigan's own radon test data

Measured

What Michigan's own agencies publish about radon tests in Manistee 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 Manistee County

Michigan EGLE publishes its figures by ZIP code, not by county. These are the 12 ZIP codes that lie wholly or partly in Manistee County, each with the state's own figures for it. Period: About 10 years to 2026-05-15.

ZIP codes in Manistee County
ZIP codeWhat the state reports
4941111% greater than 4 pCi/L, median 1.0 pCi/L, 18 tests
496130% greater than 4 pCi/L, median 1.6 pCi/L, 7 tests
4961411% greater than 4 pCi/L, median 1.2 pCi/L, 27 tests
496190% greater than 4 pCi/L, median 0.0 pCi/L, 5 tests
4962517% greater than 4 pCi/L, median 1.2 pCi/L, 6 tests
496384 tests, figures not shown
4964435% greater than 4 pCi/L, median 3.0 pCi/L, 17 tests
496457% greater than 4 pCi/L, median 1.8 pCi/L, 14 tests
4966015% greater than 4 pCi/L, median 1.8 pCi/L, 181 tests
4966813% greater than 4 pCi/L, median 2.3 pCi/L, 15 tests
4967511% greater than 4 pCi/L, median 1.4 pCi/L, 19 tests
496839% greater than 4 pCi/L, median 2.3 pCi/L, 11 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.

Manistee County, Geology

The ground under Manistee County

Predicted

USGS's geologic map puts all of Manistee County's mapped land in one class: low radon potential. The map puts 61.2% of Manistee County in the area it calls Lake Michigan Lobe Deposits and 38.4% in North-Central Michigan Basin. USGS gives both a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under Manistee County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Lake Michigan Lobe DepositsSandy to clayey glacial deposits and some glacial lake deposits.Low861.2%
North-Central Michigan BasinSandy and silty glacial deposits derived from sandstones, gray shales, limestones, and dolomites.Low838.4%

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

Manistee County beside the ground around it

Across Michigan 9.6% of the land is rated high; none of Manistee County's is. Of the 5 counties that border it, 2 have more moderate-potential ground, Grand Traverse County the most at 22.7%.

Share of land by USGS radon potential: Manistee County, the 5 counties bordering it and Michigan
AreaEPA zoneLow potentialModerate potentialHigh potential
Manistee CountyZone 399.7%NoneNone
Mason CountyZone 399.7%NoneNone
Benzie CountyZone 379.0%20.8%None
Wexford CountyZone 3100%NoneNone
Lake CountyZone 3100%NoneNone
Grand Traverse CountyZone 377.1%22.7%None
Michigan83 counties, pooled by land areaVaries45.0%44.3%9.6%

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

What it means

Manistee County, Questions

Questions about radon in Manistee County

Are radon levels high in Manistee County?

Over the 2008 to 2017 laboratory totals, 16.5% of the radon tests reported to CDC for Manistee County, Michigan were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.6 pCi/L. Of 82 Michigan counties with 30 or more tests for the same period, 43 reported a higher share; pooled, the state comes to 26.9%.

Which counties border Manistee County?

Manistee County borders 5 counties: Mason County, Benzie County, Wexford County, Lake County and Grand Traverse County.

Products

Manistee County, Products

Testing a home in Manistee County

In Manistee County, 16.5% of 388 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 26.9% pooled across Michigan. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in Manistee County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Manistee County homes, compared

Explore

Manistee County, Bordering counties

Counties bordering Manistee County

Calculated by Radon411

Manistee County, Cities and towns

Cities and towns in Manistee County

The Census Bureau estimates 25,656 residents in Manistee County for July 1, 2025, 586 more than in 2020 (+2.3%). That works out to 47 people per square mile of land. Its largest town, Manistee, has 6,157 residents, 24.0% of the total. Together its 6 incorporated places hold 31.1% of those residents; the other 68.9% live outside any of them. CDC's 388 reported tests for 2008 to 2017 work out to 15.1 per 1,000 residents (2025 estimate), close to Michigan's 11.3.

From Manistee to Copemish, CDC publishes no figure by town: each reads Manistee County's.

The cities and towns in Manistee County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Manistee6,157−2.1%24.0%
Kaleva517−1.0%2.0%
Eastlake408−1.0%1.6%
Onekama392−1.5%1.5%
Bear Lake324−0.9%1.3%
Copemish192−1.0%0.7%

6 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).

Manistee County, Homes

Homes in Manistee County

Manistee County is a place of houses on their own lots: 84% of its 15,631 homes are detached single-family houses, against 72% across Michigan. Half of its homes were built before 1971, close to Michigan's 1972: 35% date from before 1960 and 15% from 2000 or later. Owners live in 86% of the occupied homes (Michigan: 73%), so for most households a test and a fix are their own to order.

Homes in Manistee County, Michigan, 2019 to 2023
HomesManistee CountyMichigan
Housing units15,6314,599,683
Detached houses84%72%
In buildings of 5 or more3%13%
Mobile homes7%5%
Built before 196035%36%
Built since 200015%15%
Middle year built19711972
Owner-occupied86%73%

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