Long-term kit
RL116 long-term radon test kit
- Lab fee extra
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
Radon Levels in Dodge County, Minnesota
EPA puts Dodge County in Zone 1, its highest radon zone, and high results are common there: 63.2% of the 155 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
Share at 4+ pCi/L
63.2%
28.6 pts above MN
- Dodge
- 63.2%
- Minnesota
- 34.6%
155 tests, 2023
Median result
4.7pCi/L
Action level reached
- Dodge
- 4.7 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2023
Tests reported
155
19th of 62 by tests
- Dodge
- 155
- Hennepin
- 6,545
Reported to CDC before any fix, 2023
EPA radon zone
Zone 1
Highest potential
- Zone 1
- 2
- 3
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Minnesota
9 of 62
Top quarter
- Dodge
- 63.2%
- Renville
- 75.7%
By share, of 62 with 30+ tests
Read a result for Dodge County
Starts at Dodge County's median, 4.7 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 4.7 pCi/L
At or above 4 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 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. Dodge County's median reported result, 2023.
The data
Dodge County, At a glance
Dodge County at a glance
Predicted: EPA radon zone
EPA Zone 1: highest predicted potential
EPA puts all of Dodge County in
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 Dodge County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 67.4% |
| 2015 | 63.0% |
| 2016 | 56.4% |
| 2017 | 67.1% |
| 2018 | 62.9% |
| 2019 | 54.0% |
| 2020 | 47.8% |
| 2021 | 62.0% |
| 2022 | 65.7% |
| 2023 | 63.2% |
2023: 63.2%. Across these years the share ran from 47.8% to 67.4%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 155 tests reported to CDC for Dodge 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).
Dodge County, Compared
Dodge County radon figures, compared
Calculated by Radon411More than half: 63.2% of the 155 radon tests reported to CDC for Dodge County in 2023 read at least 4 pCi/L. That places it 9th of 62 Minnesota counties with 30 or more tests for the same period. That is 28.6 points above the 34.6% pooled from 86 Minnesota counties.
The median result, 4.7 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 33.3 pCi/L. The rest split 23.9% under 2 pCi/L and 12.9% from 2 to 4 (Minnesota: 36.6% and 28.9%). Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 63.2% share point the same way here.
No bordering county with a figure for the same period reported a higher share; the closest is Steele County at 51.4%, the lowest Rice County at 40.4%. Statewide for the same period, Renville County reported the highest share (75.7%) and Lake County the lowest (3.8%).
The busiest year on file was 2018, with 194 tests reported; the quietest, 2019, had 50.
Over 10 years of annual figures the share fell 4.2 points, from 67.4% in 2014 to 63.2% in 2023; its peak was 67.4% in 2014. Nationally, every county with a figure for the same period pools to 33.4%; Dodge County sits 29.8 points above it.
Dodge CountyMinnesota, pooled
63.2% % of tests34.6% % of tests
| Year | Tests | Dodge County, at or above 4 pCi/L | Minnesota, pooled |
|---|---|---|---|
| 2014 | 187 | 67.4% | 42.9% |
| 2015 | 165 | 63.0% | 43.6% |
| 2016 | 156 | 56.4% | 37.0% |
| 2017 | 143 | 67.1% | 38.2% |
| 2018 | 194 | 62.9% | 38.3% |
| 2019 | 50 | 54.0% | 36.1% |
| 2020 | 69 | 47.8% | 31.8% |
| 2021 | 129 | 62.0% | 33.1% |
| 2022 | 105 | 65.7% | 31.6% |
| 2023 | 155 | 63.2% | 34.6% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Dodge County, State data
Minnesota's own radon test data
MeasuredWhat Minnesota's own agencies publish about radon tests in Dodge 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 Dodge 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
60.8%
680 properties tested with one or more tests at or above 4 pCi/L
Median result
4.7 pCi/L
Average result
6.6 pCi/L
Tests behind these figures
112 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.
Dodge County, Geology
The ground under Dodge County
PredictedUSGS's geologic map puts all of Dodge County's mapped land in one class: high radon potential. The map puts 83.9% of Dodge County in the area it calls Dissected Till Plains and 16.1% in Central Lowland-Till Prairie. USGS gives the first a radon index of 12 and the second 14, both in the high band (12 to 17).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Dissected Till Plains | Pre-Wisconsinan glacial deposits derived from limestone, dolomite, sandstone, shale, locally covered by Wisconsinan loess. | High | 12 | 83.9% |
| Central Lowland-Till Prairie | Silty and clayey till derived from shale and sandstone. | High | 14 | 16.1% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Dodge County beside the ground around it
Dodge County has more high-potential ground than Minnesota as a whole: 100% of its land against 61.1%. Of the 5 counties that border it, none has as large a share of high-potential ground; Goodhue County comes nearest at 100%.
The map rates the ground, not the air in any home.
Local help
Dodge County, Local resources
Radon testing and mitigation in Dodge County
Listed radon businesses with an address in Dodge County:
- MDH Indoor Air UnitMDH Indoor Air Unit, run by MN Dept. of Health, licenses or certifies radon professionals and states the rule for disclosing radon when a home is sold, and answers questions about testing and mitigation in Minnesota.Visit the program’s page(opens in a new tab)
- Free and low-cost kitsAsk the program whether it has free or discounted kits, or compare kits you can buy.
- Compare kits
- Professionals in Minnesota255 professionals are listed in Minnesota.
Listed radon professionals by town: Kasson
What Minnesota's program says
- Phone
- 651-201-4601
- 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
Dodge County, Questions
Questions about radon in Dodge County
Are radon levels high in Dodge County?
In 2023, 63.2% of the radon tests reported to CDC for Dodge County, Minnesota were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.7 pCi/L. Of 62 Minnesota counties with 30 or more tests for the same period, 8 reported a higher share; pooled, the state comes to 34.6%.
Which counties border Dodge County?
Dodge County borders 5 counties: Steele County, Olmsted County, Mower County, Rice County and Goodhue County.
Products
Dodge County, Products
Testing a home in Dodge County
In Dodge County, 63.2% of 155 tests reported to CDC in 2023 reached 4 pCi/L, against 34.6% pooled across Minnesota. In Zone 1 the year-round level in Dodge 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
MonitorX-Sense
XR0A-iR Wi-Fi battery radon detector with a screen
- C-NRPP 2024/25: Not included
- Battery
- Wi-Fi
- Screen, app
Method: Alpha spectrometry
First reading: Within 24 hours
Short-term kitKidde
442020 short-term charcoal radon test kit
- Lab fee included
Method: Charcoal
In home: 3 days
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Dodge County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Dodge County
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Dodge County, Bordering counties
Counties bordering Dodge County
Calculated by Radon411- Radon levels in Steele CountyEPA zone 1
51.4%at or above 4 pCi/L
Median 4.0 pCi/L · 140 tests · 11.8 points below Dodge County
- Radon levels in Goodhue CountyEPA zone 1
49.5%at or above 4 pCi/L
Median 3.9 pCi/L · 218 tests · 13.7 points below Dodge County
- Radon levels in Olmsted CountyEPA zone 1
46.1%at or above 4 pCi/L
Median 3.7 pCi/L · 854 tests · 17.1 points below Dodge County
- Radon levels in Mower CountyEPA zone 1
45.1%at or above 4 pCi/L
Median 3.7 pCi/L · 91 tests · 18.1 points below Dodge County
- Radon levels in Rice CountyEPA zone 1
40.4%at or above 4 pCi/L
Median 3.2 pCi/L · 297 tests · 22.8 points below Dodge County
Dodge County, Cities and towns
Cities and towns in Dodge County
The Census Bureau estimates 21,376 residents in Dodge County for July 1, 2025, 481 more than in 2020 (+2.3%). That works out to 49 people per square mile of land. Its largest town, Kasson, has 7,350 residents, 34.4% of the total. Testing is reported here more often than across the state: CDC's 155 reported tests for 2023 come to 7.3 for every 1,000 residents (2025 estimate), against 3.9 for Minnesota.
From Kasson to Claremont, CDC publishes no figure by town: each reads Dodge County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Kasson | 7,350 | +6.5% | 34.4% |
| Dodge Center | 2,951 | +3.6% | 13.8% |
| Blooming Prairieextends beyond Dodge County | 1,935 | −1.7% | Counted whole |
| Hayfield | 1,358 | −0.5% | 6.4% |
| Mantorville | 1,106 | −0.3% | 5.2% |
| West Concord | 842 | −2.9% | 3.9% |
| Claremont | 500 | −2.0% | 2.3% |
7 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 Dodge County is counted whole, so it has no share.
Dodge County, Homes
Homes in Dodge County
Dodge County is a place of houses on their own lots: 84% of its 8,399 homes are detached single-family houses, against 66% across Minnesota. Half of its homes were built before 1979, close to Minnesota's 1978: 30% date from before 1960 and 25% from 2000 or later. Owners live in 88% of the occupied homes (Minnesota: 72%), so for most households a test and a fix are their own to order.
| Homes | Dodge County | Minnesota |
|---|---|---|
| Housing units | 8,399 | 2,519,538 |
| Detached houses | 84% | 66% |
| In buildings of 5 or more | 5% | 19% |
| Mobile homes | 5% | 3% |
| Built before 1960 | 30% | 29% |
| Built since 2000 | 25% | 22% |
| Middle year built | 1979 | 1978 |
| Owner-occupied | 88% | 72% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.