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RL416 long-term radon test kit, lab fee included
- Lab fee included
Method: Alpha track
In home: 90 days to 12 months
Locations and reports
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
55 tests, 2023
Median result
4.2pCi/L
Action level reached
Midpoint of the tests, 2023
Tests reported
55
49th of 62 by tests
Reported to CDC before any fix, 2023
EPA radon zone
Zone 1
Highest potential
1 highest, 3 lowest
EPA predicts over 4 pCi/L indoors
Rank in Minnesota
22 of 62
Middle half
By share, of 62 with 30+ tests
Read a result for Pope County
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
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
Predicted: EPA radon zone
EPA puts all of Pope County in
USGS geologic potential: High across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
| Year | Share of reported tests at or above 4 pCi/L |
|---|---|
| 2014 | 43.0% |
| 2015 | 44.6% |
| 2016 | 56.4% |
| 2017 | 63.6% |
| 2018 | 49.3% |
| 2019 | 44.7% |
| 2020 | 54.0% |
| 2021 | 52.5% |
| 2022 | 42.9% |
| 2023 | 50.9% |
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.
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).
Pope County, Compared
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.
| Year | Tests | Pope County, at or above 4 pCi/L | Minnesota, pooled |
|---|---|---|---|
| 2014 | 128 | 43.0% | 42.9% |
| 2015 | 112 | 44.6% | 43.6% |
| 2016 | 78 | 56.4% | 37.0% |
| 2017 | 107 | 63.6% | 38.2% |
| 2018 | 69 | 49.3% | 38.3% |
| 2019 | 47 | 44.7% | 36.1% |
| 2020 | 50 | 54.0% | 31.8% |
| 2021 | 59 | 52.5% | 33.1% |
| 2022 | 63 | 42.9% | 31.6% |
| 2023 | 55 | 50.9% | 34.6% |
Pooled shares: Radon411's sum of CDC's county counts for one period.
Pope County, State data
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.
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
Measured: Minnesota Department of Health data, 2016-2025.
Pope County, Geology
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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Central Lowland-Western Lake Section | Sandy calcareous till derived from carbonate rocks. | High | 14 | 50.2% |
| Central Lowland-Till Prairie | Silty and clayey till derived from shale and sandstone. | High | 14 | 49.8% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Pope County 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%.
The map rates the ground, not the air in any home.
Local help
Pope County, Local resources
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.
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
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%.
Pope County borders 6 counties: Douglas County, Swift County, Stevens County, Grant County, Kandiyohi County and Stearns County.
Products
Pope County, Products
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 monitors: 1 of 3
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
72.7%at or above 4 pCi/L
Median 7.6 pCi/L · 11 tests · 21.8 points above Pope County
65.1%at or above 4 pCi/L
Median 5.3 pCi/L · 106 tests · 14.2 points above Pope County
48.3%at or above 4 pCi/L
Median 3.7 pCi/L · 145 tests · 2.6 points below Pope County
46.7%at or above 4 pCi/L
Median 3.7 pCi/L · 366 tests · 4.2 points below Pope County
41.7%at or above 4 pCi/L
Median 3.8 pCi/L · 36 tests · 9.2 points below Pope County
34.5%at or above 4 pCi/L
Median 3.2 pCi/L · 29 tests · 16.4 points below Pope County
Pope County, Cities and towns
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.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Glenwood | 2,631 | −0.8% | 23.0% |
| Starbuck | 1,406 | +2.7% | 12.3% |
| Brootenextends beyond Pope County | 650 | +2.4% | Counted whole |
| Lowry | 338 | Level | 3.0% |
| Long Beach | 334 | −2.1% | 2.9% |
| Cyrus | 310 | +0.3% | 2.7% |
| Villard | 227 | +1.3% | 2.0% |
| Farwell | 56 | −1.8% | 0.5% |
| Sedan | 46 | +2.2% | 0.4% |
| Westport | 44 | +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
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 | Pope County | Minnesota |
|---|---|---|
| Housing units | 6,411 | 2,519,538 |
| Detached houses | 85% | 66% |
| In buildings of 5 or more | 7% | 19% |
| Mobile homes | 3% | 3% |
| Built before 1960 | 41% | 29% |
| Built since 2000 | 20% | 22% |
| Middle year built | 1971 | 1978 |
| Owner-occupied | 83% | 72% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.