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Radon Levels in Goodhue County, Minnesota

EPA puts Goodhue County in Zone 1, its highest radon zone, and high results are common there: 49.5% of the 218 radon tests reported to CDC (2023) came back 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

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    49.5%

    14.9 pts above MN

    Goodhue
    49.5%
    Minnesota
    34.6%

    218 tests, 2023

  • Median result

    3.9pCi/L

    Below action level

    Goodhue
    3.9 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2023

  • Tests reported

    218

    15th of 62 by tests

    Goodhue
    218
    Hennepin
    6,545

    Reported to CDC before any fix, 2023

  • 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 Minnesota

    23 of 62

    Middle half

    Goodhue
    49.5%
    Renville
    75.7%

    By share, of 62 with 30+ tests

Read a result for Goodhue County

Starts at Goodhue County's median, 3.9 pCi/L

3.9pCi/L

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

EPA’s reading of 3.9 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. Goodhue County's median reported result, 2023.

Interpret this readingWhat a fix costs

The data

Goodhue County, At a glance

Goodhue County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Goodhue 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 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Goodhue County, 2023

Share of reported tests at or above 4 pCi/L, by year, Goodhue County
Share of reported tests at or above 4 pCi/L, by year, Goodhue County
YearShare of reported tests at or above 4 pCi/L
201453.0%
201558.8%
201646.5%
201741.1%
201856.2%
201951.3%
202042.8%
202144.9%
202247.2%
202349.5%

2023: 49.5%. Across these years the share ran from 41.1% to 58.8%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

These are the 218 tests reported to CDC for Goodhue County over 2023, 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: 2023. Measured data period: 2005 to 2023 (every CDC figure on file).

How to read these figures

Goodhue County, Compared

Goodhue County radon figures, compared

Calculated by Radon411

In Goodhue County, about 5 in 10 reported tests in 2023 (108 of 218) were at or above EPA's action level. Against the national pool of 33.4%, the gap is 16.1 points higher. Across 86 Minnesota counties pooled together, 34.6% of tests reached that level, so Goodhue County runs 14.9 points above its state.

Of 7 neighbours with a figure, 1 reported a larger share at or above 4 pCi/L and 6 a smaller one; the spread is 15.4% (Pepin County, WI) to 63.2% (Dodge County). By share, Goodhue County is 23rd of 62 Minnesota counties with 30 or more tests for the same period.

Year by year, 2014 opened at 53.0% and 2023 closed at 49.5% (down 3.5 points), with 2015 the high at 58.8%. Half the tests came in under 3.9 pCi/L and half over it; the single highest reached 75.5 pCi/L. Below the action level, 49 tests (22.5%) came in under 2 pCi/L, against 36.6% statewide, and 61 tests (28.0%) fell between 2 and 4, against 28.9% statewide.

Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 49.5% share point the same way here. USGS geology rates 100% of the county's land high radon potential.

The busiest year on file was 2014, with 526 tests reported; the quietest, 2019, had 195.

Share of reported tests at or above 4 pCi/L by year, Goodhue County against Minnesota2014 to 2023, years with 30 or more tests: Goodhue County 53.0% to 49.5%, the state's pooled share 34.6% in 2023.
Goodhue CountyMinnesota, pooled
Share of reported tests at or above 4 pCi/L by year, Goodhue County against Minnesota: data table
YearTestsGoodhue County, at or above 4 pCi/LMinnesota, pooled
201452653.0%42.9%
201545258.8%43.6%
201629946.5%37.0%
201735841.1%38.2%
201837956.2%38.3%
201919551.3%36.1%
202020142.8%31.8%
202126544.9%33.1%
202225047.2%31.6%
202321849.5%34.6%
Goodhue County against Minnesota, the United States and nearby counties, 2023
AreaTestsAt or above 4 pCi/LMedianDifference from Goodhue County
Goodhue County21849.5%3.9 pCi/LThis county
Minnesota, pooled86 counties, pooled22,44934.6%Not pooled−14.9 points
United States, pooled642 counties, pooled128,74033.4%Not pooled−16.1 points
Renville Countyhighest in the state3775.7%6.3 pCi/L+26.2 points
Lake Countylowest in the state783.8%1.3 pCi/L−45.7 points
Dodge County, MNborders it15563.2%4.7 pCi/L+13.7 points
Olmsted County, MNborders it85446.1%3.7 pCi/L−3.4 points
Wabasha County, MNborders it11142.3%3.3 pCi/L−7.2 points
Rice County, MNborders it29740.4%3.2 pCi/L−9.1 points
Dakota County, MNborders it2,18334.6%2.9 pCi/L−14.9 points
Pierce County, WIborders it13630.9%2.7 pCi/L−18.6 points
Pepin County, WIborders it6515.4%1.2 pCi/L−34.1 points
Where Goodhue County's reported results fell, 2023, beside Minnesota and the United States
ResultGoodhue County testsGoodhue County shareMinnesota shareU.S. shareAgainst Minnesota
Under 2 pCi/L4922.5%36.6%41.4%−14.1 points
2 to 4 pCi/L6128.0%28.9%25.2%−0.9 points
4 pCi/L and above10849.5%34.6%33.4%+14.9 points
Goodhue County ranked among the 62 Minnesota counties with 30 or more tests, by share at or above 4 pCi/L, 2023
CountyRankTestsAt or above 4 pCi/LMedian
Fillmore County18 of 6211853.4%4.2 pCi/L
Jackson County19 of 624452.3%4.1 pCi/L
Becker County20 of 624652.2%4.1 pCi/L
Steele County21 of 6214051.4%4.0 pCi/L
Pope County22 of 625550.9%4.2 pCi/L
Goodhue County23 of 6221849.5%3.9 pCi/L
Meeker County24 of 625949.2%3.9 pCi/L
Douglas County25 of 6214548.3%3.7 pCi/L
Houston County26 of 6211347.8%3.5 pCi/L
Stearns County27 of 6236646.7%3.7 pCi/L
Olmsted County28 of 6285446.1%3.7 pCi/L
Goodhue County radon tests by year, against Minnesota's pooled share
YearTestsAt or above 4 pCi/LMedianHighestMinnesota, pooledChange from the row before
202321849.5%3.9 pCi/L75.5 pCi/L34.6%+2.3 points
202225047.2%3.8 pCi/L46.5 pCi/L31.6%+2.3 points
202126544.9%3.6 pCi/L68.4 pCi/L33.1%+2.1 points
202020142.8%3.4 pCi/L21.6 pCi/L31.8%−8.5 points
201919551.3%4.0 pCi/L42.8 pCi/L36.1%−4.9 points
201837956.2%4.5 pCi/L37.8 pCi/L38.3%+15.1 points
201735841.1%3.2 pCi/L69.7 pCi/L38.2%−5.4 points
201629946.5%3.3 pCi/L37.9 pCi/L37.0%−12.3 points
201545258.8%4.7 pCi/L44.9 pCi/L43.6%+5.8 points
201452653.0%4.3 pCi/L113.7 pCi/L42.9%First on file

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

Goodhue County, State data

Minnesota's own radon test data

Measured

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

MeasuredState figures, not CDC's

What the Minnesota Department of Health reports for Goodhue County

Radon Testing (MN Public Health Data Access Portal): home radon tests reported voluntarily by private laboratories and licensed radon measurement professionals, counted by property. Period: 2016-2025.

Share with one or more tests at or above 4 pCi/L

51.5%

1,136 properties tested with one or more tests at or above 4 pCi/L

Median result

3.8 pCi/L

Average result

5.5 pCi/L

Tests behind these figures

221 properties tested a year on average

  • MDH says these data do not include all of the radon tests conducted in Minnesota.
  • Post-mitigation tests are excluded from the averages and the median; the percentages use each property's highest test.
  • Each home is unique and can have very different results than a neighbor's home; the only way to know is to test.
  • These figures describe tests reported to the Minnesota Department of Health in this area. They count a different set of tests than CDC's figures and are not a reading of any one home.

Measured: Minnesota Department of Health data, 2016-2025.

Goodhue County, Geology

The ground under Goodhue County

Predicted

USGS's geologic map puts all of Goodhue County's mapped land in one class: high radon potential. The map puts 54.0% of Goodhue County in the area it calls Dissected Till Plains and 44.8% in Driftless Section, with one smaller area beside them. USGS gives both a radon index of 12, in the high band (12 to 17).

USGS's geologic areas under Goodhue County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Dissected Till PlainsPre-Wisconsinan glacial deposits derived from limestone, dolomite, sandstone, shale, locally covered by Wisconsinan loess.High1254.0%
Driftless SectionOrdivician carbonates and sandstones.High1244.8%
Central Lowland-Western Lake SectionRed sandy till derived primarily from sandstone.High140.9%

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

Goodhue County beside the ground around it

Goodhue County has more high-potential ground than Minnesota as a whole: 100% of its land against 61.1%. Of the 7 counties that border it, none has as large a share of high-potential ground; Dodge County comes nearest at 100%.

Share of land by USGS radon potential: Goodhue County, the 7 counties bordering it and Minnesota
AreaEPA zoneLow potentialModerate potentialHigh potential
Goodhue CountyZone 1NoneNone100%
Dakota CountyZone 1NoneNone100%
Pierce County, WIZone 1NoneNone100%
Wabasha CountyZone 1NoneNone100%
Rice CountyZone 1NoneNone100%
Dodge CountyZone 1NoneNone100%
Pepin County, WIZone 1None44.8%55.2%
Olmsted CountyZone 1NoneNone100%
Minnesota87 counties, pooled by land areaVariesNone38.9%61.1%

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

Local help

Goodhue County, Local resources

Radon testing and mitigation in Goodhue County

Listed radon businesses with an address in Goodhue County:

Listed radon professionals by town: Red Wing, Cannon Falls, Kenyon

What Minnesota's program says
Phone
651-201-4601
Email
health.indoorair@state.mn.us
Licensing of radon professionals
The Radon Licensing Act requires anyone who performs a radon test or radon mitigation, in a building they do not own or lease, must be licensed by MDH.
Disclosure when a home is sold or rented
The Minnesota Radon Awareness Act requires specific disclosure and education be provided to potential home buyers during residential real estate transactions in Minnesota.

What it means

Goodhue County, Questions

Questions about radon in Goodhue County

Are radon levels high in Goodhue County?

In 2023, 49.5% of the radon tests reported to CDC for Goodhue County, Minnesota were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.9 pCi/L. Of 62 Minnesota counties with 30 or more tests for the same period, 22 reported a higher share; pooled, the state comes to 34.6%.

Which counties border Goodhue County?

Goodhue County borders 7 counties: Dakota County, MN, Pierce County, WI, Wabasha County, MN, Rice County, MN, Dodge County, MN, Pepin County, WI and Olmsted County, MN.

Products

Goodhue County, Products

Testing a home in Goodhue County

In Goodhue County, 49.5% of 218 tests reported to CDC in 2023 reached 4 pCi/L, against 34.6% pooled across Minnesota. In Zone 1 the year-round level in Goodhue 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

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

Explore

Goodhue County, Bordering counties

Counties bordering Goodhue County

Calculated by Radon411

Goodhue County, Cities and towns

Cities and towns in Goodhue County

The Census Bureau estimates 48,195 residents in Goodhue County for July 1, 2025, 601 more than in 2020 (+1.3%). That works out to 64 people per square mile of land. Its largest town, Red Wing, has 16,805 residents, 34.9% of the total. CDC's 218 reported tests for 2023 work out to 4.5 per 1,000 residents (2025 estimate), close to Minnesota's 3.9.

From Red Wing to Bellechester, CDC publishes no figure by town: each reads Goodhue County's.

The cities and towns in Goodhue County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Red Wing16,805+1.0%34.9%
Lake Cityextends beyond Goodhue County5,306+1.1%Counted whole
Cannon Falls4,209−0.1%8.7%
Zumbrota4,072+9.0%8.4%
Pine Islandextends beyond Goodhue County3,911+3.4%Counted whole
Kenyon1,885−0.4%3.9%
Goodhue1,247+0.1%2.6%
Wanamingo1,111−0.3%2.3%
Dennisonextends beyond Goodhue County220−1.3%Counted whole
Bellechesterextends beyond Goodhue County174−0.6%Counted whole

10 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 Goodhue County is counted whole, so it has no share.

Goodhue County, Homes

Homes in Goodhue County

Of Goodhue County's 21,071 homes, 70% are detached houses, against 66% across Minnesota; 13% are in buildings of five or more homes. Half of its homes were built before 1974, close to Minnesota's 1978: 35% date from before 1960 and 20% from 2000 or later. Owners live in 78% of the occupied homes (Minnesota: 72%), so for most households a test and a fix are their own to order.

Homes in Goodhue County, Minnesota, 2019 to 2023
HomesGoodhue CountyMinnesota
Housing units21,0712,519,538
Detached houses70%66%
In buildings of 5 or more13%19%
Mobile homes6%3%
Built before 196035%29%
Built since 200020%22%
Middle year built19741978
Owner-occupied78%72%

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