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Radon Levels in Pope County, Minnesota

EPA puts Pope County in Zone 1, its highest radon zone, and high results are common there: 50.9% of the 55 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

    50.9%

    16.3 pts above MN

    Pope
    50.9%
    Minnesota
    34.6%

    55 tests, 2023

  • Median result

    4.2pCi/L

    Action level reached

    Pope
    4.2 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2023

  • Tests reported

    55

    49th of 62 by tests

    Pope
    55
    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

    22 of 62

    Middle half

    Pope
    50.9%
    Renville
    75.7%

    By share, of 62 with 30+ tests

Read a result for Pope County

Starts at Pope County's median, 4.2 pCi/L

4.2pCi/L

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

EPA’s reading of 4.2 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. Pope County's median reported result, 2023.

The data

Pope County, At a glance

Pope County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Pope 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 Pope County, 2023

Share of reported tests at or above 4 pCi/L, by year, Pope County
Share of reported tests at or above 4 pCi/L, by year, Pope County
YearShare of reported tests at or above 4 pCi/L
201443.0%
201544.6%
201656.4%
201763.6%
201849.3%
201944.7%
202054.0%
202152.5%
202242.9%
202350.9%

2023: 50.9%. Across these years the share ran from 42.9% to 63.6%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

These are the 55 tests reported to CDC for Pope 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

Pope County, Compared

Pope County radon figures, compared

Calculated by Radon411

More than half: 50.9% of the 55 radon tests reported to CDC for Pope County in 2023 read at least 4 pCi/L. That places it 22nd of 62 Minnesota counties with 30 or more tests for the same period. That is 16.3 points above the 34.6% pooled from 86 Minnesota counties.

The median result, 4.2 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 24.7 pCi/L. The rest split 25.5% under 2 pCi/L and 23.6% from 2 to 4 (Minnesota: 36.6% and 28.9%). Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 50.9% share point the same way here.

1 of its 4 bordering counties with figures ran higher, led by Kandiyohi County at 65.1%; Swift County reported 41.7%. 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 2014, with 128 tests reported; the quietest, 2019, had 47.

Over 10 years of annual figures the share rose 7.9 points, from 43.0% in 2014 to 50.9% in 2023; its peak was 63.6% in 2017. Nationally, every county with a figure for the same period pools to 33.4%; Pope County sits 17.5 points above it.

Share of reported tests at or above 4 pCi/L by year, Pope County against Minnesota2014 to 2023, years with 30 or more tests: Pope County 43.0% to 50.9%, the state's pooled share 34.6% in 2023.
Pope CountyMinnesota, pooled
Share of reported tests at or above 4 pCi/L by year, Pope County against Minnesota: data table
YearTestsPope County, at or above 4 pCi/LMinnesota, pooled
201412843.0%42.9%
201511244.6%43.6%
20167856.4%37.0%
201710763.6%38.2%
20186949.3%38.3%
20194744.7%36.1%
20205054.0%31.8%
20215952.5%33.1%
20226342.9%31.6%
20235550.9%34.6%
Pope County against Minnesota, the United States and nearby counties, 2023
AreaTestsAt or above 4 pCi/LMedianDifference from Pope County
Pope County5550.9%4.2 pCi/LThis county
Minnesota, pooled86 counties, pooled22,44934.6%Not pooled−16.3 points
United States, pooled642 counties, pooled128,74033.4%Not pooled−17.5 points
Renville Countyhighest in the state3775.7%6.3 pCi/L+24.8 points
Lake Countylowest in the state783.8%1.3 pCi/L−47.1 points
Grant County, MNborders it1172.7%7.6 pCi/L+21.8 points
Kandiyohi County, MNborders it10665.1%5.3 pCi/L+14.2 points
Douglas County, MNborders it14548.3%3.7 pCi/L−2.6 points
Stearns County, MNborders it36646.7%3.7 pCi/L−4.2 points
Swift County, MNborders it3641.7%3.8 pCi/L−9.2 points
Stevens County, MNborders it2934.5%3.2 pCi/L−16.4 points
Where Pope County's reported results fell, 2023, beside Minnesota and the United States
ResultPope County testsPope County shareMinnesota shareU.S. shareAgainst Minnesota
Under 2 pCi/L1425.5%36.6%41.4%−11.1 points
2 to 4 pCi/L1323.6%28.9%25.2%−5.3 points
4 pCi/L and above2850.9%34.6%33.4%+16.3 points
Pope 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
Redwood County17 of 623154.8%4.6 pCi/L
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
Pope County radon tests by year, against Minnesota's pooled share
YearTestsAt or above 4 pCi/LMedianHighestMinnesota, pooledChange from the row before
20235550.9%4.2 pCi/L24.7 pCi/L34.6%+8.0 points
20226342.9%3.4 pCi/L19.8 pCi/L31.6%−9.6 points
20215952.5%4.3 pCi/L16.6 pCi/L33.1%−1.5 points
20205054.0%4.5 pCi/L19.1 pCi/L31.8%+9.3 points
20194744.7%3.4 pCi/L26.7 pCi/L36.1%−4.6 points
20186949.3%3.8 pCi/L30.6 pCi/L38.3%−14.3 points
201710763.6%4.8 pCi/L28.6 pCi/L38.2%+7.2 points
20167856.4%4.4 pCi/L18.2 pCi/L37.0%+11.8 points
201511244.6%3.3 pCi/L28.8 pCi/L43.6%+1.6 points
201412843.0%3.5 pCi/L59.7 pCi/L42.9%First on file

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

Pope County, State data

Minnesota's own radon test data

Measured

What Minnesota's own agencies publish about radon tests in Pope 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 Pope 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%

243 properties tested with one or more tests at or above 4 pCi/L

Median result

3.9 pCi/L

Average result

4.9 pCi/L

Tests behind these figures

47 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.

Pope County, Geology

The ground under Pope County

Predicted

USGS's geologic map puts all of Pope County's mapped land in one class: high radon potential. The map puts 50.2% of Pope County in the area it calls Central Lowland-Western Lake Section and 49.8% in Central Lowland-Till Prairie. USGS gives both a radon index of 14, in the high band (12 to 17).

USGS's geologic areas under Pope County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Central Lowland-Western Lake SectionSandy calcareous till derived from carbonate rocks.High1450.2%
Central Lowland-Till PrairieSilty and clayey till derived from shale and sandstone.High1449.8%

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

Pope County beside the ground around it

Pope County has more high-potential ground than Minnesota as a whole: 100% of its land against 61.1%. Of the 6 counties that border it, none has as large a share of high-potential ground; Douglas County comes nearest at 100%.

Share of land by USGS radon potential: Pope County, the 6 counties bordering it and Minnesota
AreaEPA zoneLow potentialModerate potentialHigh potential
Pope CountyZone 1NoneNone100%
Douglas CountyZone 1NoneNone100%
Swift CountyZone 1NoneNone100%
Stevens CountyZone 1NoneNone100%
Grant CountyZone 1NoneNone100%
Kandiyohi CountyZone 1NoneNone100%
Stearns CountyZone 1None21.5%78.5%
Minnesota87 counties, pooled by land areaVariesNone38.9%61.1%

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

Local help

Pope County, Local resources

Radon testing and mitigation in Pope County

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

Pope County, Questions

Questions about radon in Pope County

Are radon levels high in Pope County?

In 2023, 50.9% of the radon tests reported to CDC for Pope County, Minnesota were at or above 4 pCi/L, and the median reported pre-mitigation result was 4.2 pCi/L. Of 62 Minnesota counties with 30 or more tests for the same period, 21 reported a higher share; pooled, the state comes to 34.6%.

Which counties border Pope County?

Pope County borders 6 counties: Douglas County, Swift County, Stevens County, Grant County, Kandiyohi County and Stearns County.

Products

Pope County, Products

Testing a home in Pope County

In Pope County, 50.9% of 55 tests reported to CDC in 2023 reached 4 pCi/L, against 34.6% pooled across Minnesota. In Zone 1 the year-round level in Pope 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

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

Explore

Pope County, Bordering counties

Counties bordering Pope County

Calculated by Radon411

Pope County, Cities and towns

Cities and towns in Pope County

The Census Bureau estimates 11,420 residents in Pope County for July 1, 2025, 93 more than in 2020 (+0.8%). That works out to 17 people per square mile of land. Its largest town, Glenwood, has 2,631 residents, 23.0% of the total. CDC's 55 reported tests for 2023 work out to 4.8 per 1,000 residents (2025 estimate), close to Minnesota's 3.9.

From Glenwood to Westport, CDC publishes no figure by town: each reads Pope County's.

The cities and towns in Pope County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Glenwood2,631−0.8%23.0%
Starbuck1,406+2.7%12.3%
Brootenextends beyond Pope County650+2.4%Counted whole
Lowry338Level3.0%
Long Beach334−2.1%2.9%
Cyrus310+0.3%2.7%
Villard227+1.3%2.0%
Farwell56−1.8%0.5%
Sedan46+2.2%0.4%
Westport44+2.3%0.4%

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 Pope County is counted whole, so it has no share.

Pope County, Homes

Homes in Pope County

Pope County is a place of houses on their own lots: 85% of its 6,411 homes are detached single-family houses, against 66% across Minnesota. Half of its homes were built before 1971, close to Minnesota's 1978: 41% date from before 1960 and 20% from 2000 or later. Owners live in 83% of the occupied homes (Minnesota: 72%), so for most households a test and a fix are their own to order.

Homes in Pope County, Minnesota, 2019 to 2023
HomesPope CountyMinnesota
Housing units6,4112,519,538
Detached houses85%66%
In buildings of 5 or more7%19%
Mobile homes3%3%
Built before 196041%29%
Built since 200020%22%
Middle year built19711978
Owner-occupied83%72%

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