Short-term kit
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
Radon Levels in Itasca County, Minnesota
EPA puts Itasca County in Zone 2, its middle radon zone, and 26.3% of its 137 reported radon tests (2023) 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
26.3%
8.3 pts below MN
- Itasca
- 26.3%
- Minnesota
- 34.6%
137 tests, 2023
Median result
1.9pCi/L
Below action level
- Itasca
- 1.9 pCi/L
- EPA
- 4.0 pCi/L
Midpoint of the tests, 2023
Tests reported
137
23rd of 62 by tests
- Itasca
- 137
- Hennepin
- 6,545
Reported to CDC before any fix, 2023
EPA radon zone
Zone 2
Moderate potential
- 1
- Zone 2
- 3
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in Minnesota
51 of 62
Lowest quarter
- Itasca
- 26.3%
- Renville
- 75.7%
By share, of 62 with 30+ tests
Read a result for Itasca County
Starts at Itasca County's median, 1.9 pCi/L
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.9 pCi/L
Below 2 pCi/L
- Under 20 to 1.9 pCi/L
- 2 to 4consider a fix
- 4 and aboveEPA says fix it
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Itasca County's median reported result, 2023.
The data
Itasca County, At a glance
Itasca County at a glance
Predicted: EPA radon zone
EPA Zone 2: moderate predicted potential
Itasca County is a
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 Itasca County, 2023
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 21.9% |
| 2015 | 33.3% |
| 2016 | 31.8% |
| 2017 | 31.0% |
| 2018 | 30.0% |
| 2019 | 39.7% |
| 2020 | 23.2% |
| 2021 | 29.9% |
| 2022 | 31.3% |
| 2023 | 26.3% |
2023: 26.3%. Across these years the share ran from 21.9% to 39.7%. Each column counts radon tests reported to CDC that year, not homes.
What these figures count
These are the 137 tests reported to CDC for Itasca 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).
Itasca County, Compared
Itasca County radon figures, compared
Calculated by Radon411Itasca County's 137 reported tests in 2023 had a middle value of 1.9 pCi/L and a maximum of 28.6 pCi/L, and 26.3% reached 4 pCi/L. Minnesota as a whole (86 Minnesota counties, pooled) comes to 34.6%: 8.3 points higher than here.
Among its state's counties it ranks 51st of 62 Minnesota counties with 30 or more tests for the same period. Statewide for the same period, Renville County reported the highest share (75.7%) and Lake County the lowest (3.8%).
Below the action level, 69 tests (50.4%) came in under 2 pCi/L, against 36.6% statewide, and 32 tests (23.4%) fell between 2 and 4, against 28.9% statewide. The busiest year on file was 2014, with 224 tests reported; the quietest, 2019, had 73.
EPA's 1993 zone map puts Itasca County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 100% of the county's land moderate radon potential.
Next door, the shares run from 20.2% in St. Louis County to 40.7% in Beltrami County, with Cass County and St. Louis County below Itasca County. Over 10 years of annual figures the share rose 4.4 points, from 21.9% in 2014 to 26.3% in 2023; its peak was 39.7% in 2019.
Itasca CountyMinnesota, pooled
26.3% % of tests34.6% % of tests
| Year | Tests | Itasca County, at or above 4 pCi/L | Minnesota, pooled |
|---|---|---|---|
| 2014 | 224 | 21.9% | 42.9% |
| 2015 | 207 | 33.3% | 43.6% |
| 2016 | 154 | 31.8% | 37.0% |
| 2017 | 116 | 31.0% | 38.2% |
| 2018 | 90 | 30.0% | 38.3% |
| 2019 | 73 | 39.7% | 36.1% |
| 2020 | 142 | 23.2% | 31.8% |
| 2021 | 164 | 29.9% | 33.1% |
| 2022 | 112 | 31.3% | 31.6% |
| 2023 | 137 | 26.3% | 34.6% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Itasca County, State data
Minnesota's own radon test data
MeasuredWhat Minnesota's own agencies publish about radon tests in Itasca 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 Itasca 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
30.7%
268 properties tested with one or more tests at or above 4 pCi/L
Median result
2.4 pCi/L
Average result
3.6 pCi/L
Tests behind these figures
87 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.
Itasca County, Geology
The ground under Itasca County
PredictedUSGS's geologic map puts all of Itasca County's mapped land in one class: moderate radon potential. All of it lies in the area the map calls Lake Agassiz Plain/Central Lowland-Western Lake Section, to which USGS gives a radon index of 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Lake Agassiz Plain/Central Lowland-Western Lake Section | Silty and clayey glacial deposits and lake deposits. | Moderate | 10 | 99.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Itasca County beside the ground around it
Across Minnesota 61.1% of the land is rated high; none of Itasca County's is. Of the 5 counties that border it, 2 have more high-potential ground, Cass County the most at 45.3%.
The map rates the ground, not the air in any home.
Local help
Itasca County, Local resources
Radon testing and mitigation in Itasca County
Listed radon businesses with an address in Itasca 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: Grand Rapids
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
Itasca County, Questions
Questions about radon in Itasca County
Are radon levels high in Itasca County?
In 2023, 26.3% of the radon tests reported to CDC for Itasca County, Minnesota were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.9 pCi/L. Of 62 Minnesota counties with 30 or more tests for the same period, 50 reported a higher share; pooled, the state comes to 34.6%.
Which counties border Itasca County?
Itasca County borders 5 counties: Cass County, Koochiching County, St. Louis County, Aitkin County and Beltrami County.
Products
Itasca County, Products
Testing a home in Itasca County
In Itasca County, 26.3% of 137 tests reported to CDC in 2023 reached 4 pCi/L, against 34.6% pooled across Minnesota. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Itasca County; a long-term test tells the year-round average.
Test kits and monitors3
See every kit and monitor
Long-term kit
RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Monitor
Hello Radon C battery radon monitor with an e-ink screen
- C-NRPP 2024/25: Not included
- Battery
- Screen
Method: Alpha spectrometry
First reading: Within 24 hours
- See every kit and monitor Test kits and monitors
Test kits and monitors: 1 of 3
Explore
Itasca County, Bordering counties
Counties bordering Itasca County
Calculated by Radon411- Radon levels in Koochiching CountyEPA zone 2
50.0%at or above 4 pCi/L
Median 2.9 pCi/L · 4 tests · 23.7 points above Itasca County
- Radon levels in Beltrami CountyEPA zone 2
40.7%at or above 4 pCi/L
Median 3.0 pCi/L · 54 tests · 14.4 points above Itasca County
- Radon levels in Aitkin CountyEPA zone 2
38.7%at or above 4 pCi/L
Median 3.1 pCi/L · 31 tests · 12.4 points above Itasca County
- Radon levels in Cass CountyEPA zone 2
25.5%at or above 4 pCi/L
Median 2.3 pCi/L · 106 tests · 0.8 points below Itasca County
- Radon levels in St. Louis CountyEPA zone 2
20.2%at or above 4 pCi/L
Median 1.7 pCi/L · 496 tests · 6.1 points below Itasca County
Itasca County, Cities and towns
Cities and towns in Itasca County
The Census Bureau estimates 45,404 residents in Itasca County for July 1, 2025, 382 more than in 2020 (+0.8%). That works out to 17 people per square mile of land. Its largest town, Grand Rapids, has 11,181 residents, 24.6% of the total. Together its 16 incorporated places hold 49.9% of those residents; the other 50.1% live outside any of them. CDC's 137 reported tests for 2023 work out to 3.0 per 1,000 residents (2025 estimate), close to Minnesota's 3.9.
From Grand Rapids to Zemple, CDC publishes no figure by town: each reads Itasca County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Grand Rapids | 11,181 | +0.9% | 24.6% |
| Cohasset | 2,728 | +1.1% | 6.0% |
| Coleraine | 1,998 | −0.4% | 4.4% |
| Keewatin | 965 | −1.6% | 2.1% |
| Nashwauk | 957 | −1.4% | 2.1% |
| Deer River | 926 | +1.6% | 2.0% |
| Bovey | 805 | −1.9% | 1.8% |
| La Prairie | 661 | +0.5% | 1.5% |
| Taconite | 646 | −0.6% | 1.4% |
| Marble | 605 | −2.1% | 1.3% |
| Bigfork | 405 | −0.5% | 0.9% |
| Calumet | 324 | −1.5% | 0.7% |
- Warba
- Effie
- Squaw Lake
- Zemple
16 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).
Itasca County, Homes
Homes in Itasca County
Itasca County is a place of houses on their own lots: 81% of its 25,589 homes are detached single-family houses, against 66% across Minnesota. Half of its homes were built before 1979, close to Minnesota's 1978: 26% date from before 1960 and 23% from 2000 or later. Owners live in 82% of the occupied homes (Minnesota: 72%), so for most households a test and a fix are their own to order.
| Homes | Itasca County | Minnesota |
|---|---|---|
| Housing units | 25,589 | 2,519,538 |
| Detached houses | 81% | 66% |
| In buildings of 5 or more | 8% | 19% |
| Mobile homes | 8% | 3% |
| Built before 1960 | 26% | 29% |
| Built since 2000 | 23% | 22% |
| Middle year built | 1979 | 1978 |
| Owner-occupied | 82% | 72% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.