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Radon Levels in Menominee County, Wisconsin

EPA puts Menominee County in Zone 1, its highest radon zone, and only 3 radon tests from it are on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Highest bordering

    65.8%

    Langlade County

    Langlade
    65.8%
    Oconto
    52.3%

    3 of 3 neighbours have 30+ tests, 2023

  • Nearest county

    57.0%

    Shawano County, 15 miles

    Shawano
    57.0%
    Wisconsin
    35.7%

    Share at 4+ pCi/L, 114 tests, 2023

  • Ground above low

    100.0%

    1.7 pts above Wisconsin

    Menominee
    100.0%
    Wisconsin
    98.3%

    Share of land USGS rates moderate or high potential

  • Tests reported

    22

    Too few for a share

    Menominee
    22
    Needed
    30

    2005 to 2014, laboratory

  • 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

Read a result for Menominee County

Starts at EPA's action level

4.0pCi/L

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

EPA’s reading of 4.0 pCi/L

At or above 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 at or above 4 pCi/L. EPA recommends fixing a home when the radon level is 4 pCi/L or higher.

The data

Menominee County, At a glance

Menominee County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Menominee 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: High across 98% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Menominee County, 2023

Share of reported tests at or above 4 pCi/L, by year, Menominee County
Share of reported tests at or above 4 pCi/L, by year, Menominee County
YearShare of reported tests at or above 4 pCi/L
201466.7%
2015100.0%
201950.0%
20200.0%
202150.0%
202283.3%
2023100.0%

2023: 100.0%. Across these years the share ran from 0.0% to 100.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 3 tests were reported to CDC for Menominee County over 2023, and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.

Measured: CDC tracking data. Figure above: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).

How to read these figures

Menominee County, Compared

Menominee County radon figures, compared

Calculated by Radon411

CDC's largest figure for Menominee County rests on 22 tests over the 2005 to 2014 laboratory totals, 5 of them at or above 4 pCi/L, so each test moves its share by 4.5 points and no rank or comparison is drawn from it. Results reached as high as 13.1 pCi/L, with a middle value of 2.8 pCi/L.

Of the counties bordering it, 3 have a figure in 2023: Langlade County reported the largest share at or above 4 pCi/L, 65.8%, and Oconto County the smallest, 52.3%, with Shawano County at 57.0% between. Farther out, Waupaca County (39 miles away) at 52.8%, Marinette County (42 miles away) at 44.3% and Outagamie County (42 miles away) at 40.7% have figures too. Pooled across 72 Wisconsin counties, 35.7% of reported tests reached that level; across every county in the country with a figure, 33.4%.

Statewide for the same period, Langlade County reported the highest share (65.8%) and Bayfield County the lowest (5.7%). EPA's 1993 map puts Menominee County in Zone 1, the map's highest label: a predicted county average above 4 pCi/L. USGS geology rates 98% of the county's land high radon potential.

Wisconsin, the United States and the counties around Menominee County, 2023
AreaTestsAt or above 4 pCi/LMedian
Wisconsin, pooled72 counties, pooled20,87935.7%Not pooled
United States, pooled642 counties, pooled128,74033.4%Not pooled
Iowa Countyhighest in the state14661.0%4.8 pCi/L
Bayfield Countylowest in the state355.7%1.5 pCi/L
Langlade County, WIborders it22565.8%6.0 pCi/L
Shawano County, WIborders it11457.0%5.0 pCi/L
Oconto County, WIborders it13052.3%4.5 pCi/L
The nearest Wisconsin counties to Menominee County with 30 or more tests, 2023
CountyDistanceTestsAt or above 4 pCi/LMedian
Shawano County15 mi11457.0%5.0 pCi/L
Oconto County22 mi13052.3%4.5 pCi/L
Langlade County25 mi22565.8%6.0 pCi/L
Waupaca County39 mi12752.8%4.3 pCi/L
Marinette County42 mi6144.3%2.6 pCi/L
Outagamie County42 mi33740.7%3.1 pCi/L
Forest County46 mi4540.0%2.9 pCi/L
Brown County52 mi55123.0%1.4 pCi/L
Menominee County radon tests by year, against Wisconsin's pooled share
YearTestsAt or above 4 pCi/LMedianHighestWisconsin, pooledChange from the row before
20233100.0%11.0 pCi/L21.2 pCi/L35.7%+16.7 points
2022683.3%7.6 pCi/L11.1 pCi/L42.9%+33.3 points
2021450.0%8.5 pCi/L16.3 pCi/L39.9%+50.0 points
202010.0%0.6 pCi/L0.6 pCi/L27.0%−50.0 points
2019250.0%5.0 pCi/L6.7 pCi/L42.9%−50.0 points
20152100.0%6.7 pCi/L7.1 pCi/L51.6%+33.3 points
2014366.7%5.1 pCi/L5.6 pCi/L51.1%First on file

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

Menominee County, Geology

The ground under Menominee County

Predicted

Most of the ground under Menominee County is one class on USGS's geologic map: 98.0% of its land is high radon potential, with 2.0% moderate. 98.0% of it lies in the area the map calls Wolf River Batholith, to which USGS gives a radon index of 13, in the high band (12 to 17).

USGS's geologic areas under Menominee County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Wolf River BatholithPlutonic granitic rocks including quartz monzonite, syenite, monzonite, anorthosite.High1398.0%
Green Bay LobeGlacial deposits derived from carbonate and igneous rocks.Moderate102.0%

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

Menominee County beside the ground around it

Menominee County has more high-potential ground than Wisconsin as a whole: 98.0% of its land against 34.8%. Of the 3 counties that border it, none has as large a share of high-potential ground; Shawano County comes nearest at 63.3%.

Share of land by USGS radon potential: Menominee County, the 3 counties bordering it and Wisconsin
AreaEPA zoneLow potentialModerate potentialHigh potential
Menominee CountyZone 1None2.0%98.0%
Shawano CountyZone 1None36.7%63.3%
Oconto CountyZone 2None67.2%32.6%
Langlade CountyZone 1None44.9%55.1%
Wisconsin72 counties, pooled by land areaVaries1.4%63.5%34.8%

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

What it means

Menominee County, Questions

Questions about radon in Menominee County

Are radon levels high in Menominee County?

In 2023, 100.0% of the radon tests reported to CDC for Menominee County, Wisconsin were at or above 4 pCi/L, and the median reported pre-mitigation result was 11.0 pCi/L. Of the counties bordering it, 3 have a figure in 2023: Langlade County reported the largest share at or above 4 pCi/L, 65.8%, and Oconto County the smallest, 52.3%, with Shawano County at 57.0% between.

Which counties border Menominee County?

Menominee County borders 3 counties: Shawano County, Oconto County and Langlade County.

Products

Menominee County, Products

Testing a home in Menominee County

No CDC figure names Menominee County; the nearest county with one, Shawano County (15 miles away), reported 57.0% of its tests at or above 4 pCi/L in 2023, the only reading nearby until a test of this home. In Zone 1 the year-round level in Menominee 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

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

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Menominee County, Bordering counties

Counties bordering Menominee County

Calculated by Radon411

Menominee County, Residents

Who lives in Menominee County

About 4,199 people live in Menominee County by the Census Bureau's estimate for July 1, 2025, 59 fewer than in 2020 (−1.4%). That works out to 12 people per square mile of land. Reported testing is thin here: 22 tests over 2005 to 2014, or 5.2 for every 1,000 residents (2025 estimate), where Wisconsin as a whole comes to 9.5.

Census lists no incorporated place in Menominee County: every home in it reads the county's figures.

Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).

Menominee County, Homes

Homes in Menominee County

Menominee County is a place of houses on their own lots: 91% of its 2,148 homes are detached single-family houses, against 66% across Wisconsin. Much of Menominee County is recent building: 20% of its homes have gone up since 2000 and the middle year built is 1986, against 1975 for Wisconsin. 74% of occupied homes are lived in by their owner (Wisconsin: 68%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Menominee County, Wisconsin, 2019 to 2023
HomesMenominee CountyWisconsin
Housing units2,1482,750,750
Detached houses91%66%
In buildings of 5 or more1%17%
Mobile homes7%3%
Built before 19609%34%
Built since 200020%20%
Middle year built19861975
Owner-occupied74%68%

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