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Radon Levels in Stutsman County, North Dakota

EPA puts Stutsman County in Zone 1, its highest radon zone, and high results are common there: 73.5% of the 351 radon tests reported to CDC (2008 to 2017, laboratory totals) 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

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  • Share at 4+ pCi/L

    73.5%

    14.2 pts above ND

    Stutsman
    73.5%
    ND
    59.3%

    351 tests, 2008 to 2017

  • Median result

    5.8pCi/L

    Action level reached

    Stutsman
    5.8 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    351

    6th of 29 by tests

    Stutsman
    351
    Burleigh
    1,558

    Reported to CDC before any fix, 2008 to 2017

  • 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 ND

    7 of 29

    Top quarter

    Stutsman
    73.5%
    Pembina
    82.5%

    By share, of 29 with 30+ tests

Read a result for Stutsman County

Starts at Stutsman County's median, 5.8 pCi/L

5.8pCi/L

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

EPA’s reading of 5.8 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. Stutsman County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Stutsman County, At a glance

Stutsman County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Stutsman 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 Stutsman County, 2008 to 2017, laboratory

Reported results by concentration band, Stutsman County, 2008 to 2017, laboratory
Under 2 pCi/L: 8%2 to 4 pCi/L: 19%4 pCi/L and above: 73%

Of 351 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Stutsman County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L288.0%
2 to 4 pCi/L6518.5%
4 pCi/L and above25873.5%
What these figures count

These are the 351 tests reported to CDC for Stutsman County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).

How to read these figures

Stutsman County, Compared

Stutsman County radon figures, compared

Calculated by Radon411

More than half: 73.5% of the 351 radon tests reported to CDC for Stutsman County over the 2008 to 2017 laboratory totals read at least 4 pCi/L. That places it 7th of 29 North Dakota counties with 30 or more tests for the same period. That is 14.2 points above the 59.3% pooled from 53 North Dakota counties.

The median result, 5.8 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 56.7 pCi/L. The rest split 8.0% under 2 pCi/L and 18.5% from 2 to 4 (North Dakota: 18.3% and 22.4%). Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 73.5% share point the same way here.

No bordering county with a figure for the same period reported a higher share; the closest is LaMoure County at 70.5%, the lowest Wells County at 48.1%. Statewide for the same period, Pembina County reported the highest share (82.5%) and Williams County the lowest (33.8%).

CDC's ten-year totals for Stutsman County went from 234 tests (2005 to 2014) to 351 (2008 to 2017), the share going from 69.7% to 73.5%.

Nationally, every county with a figure for the same period pools to 35.7%; Stutsman County sits 37.8 points above it. CDC also counts 25 tests taken after mitigation in Stutsman County for the same period: tests in homes where a fix was already in.

Stutsman County against North Dakota, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Stutsman County
Stutsman County35173.5%5.8 pCi/LThis county
North Dakota, pooled53 counties, pooled6,60759.3%Not pooled−14.2 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−37.8 points
Pembina Countyhighest in the state5782.5%9.3 pCi/L+9.0 points
Williams Countylowest in the state20433.8%2.9 pCi/L−39.7 points
Kidder County, NDborders it2979.3%7.3 pCi/L+5.8 points
LaMoure County, NDborders it4470.5%5.2 pCi/L−3.0 points
Barnes County, NDborders it8367.5%5.6 pCi/L−6.0 points
Foster County, NDborders it3161.3%4.5 pCi/L−12.2 points
Griggs County, NDborders it1154.5%5.0 pCi/L−19.0 points
Logan County, NDborders it1250.0%3.7 pCi/L−23.5 points
Wells County, NDborders it8148.1%3.8 pCi/L−25.4 points
Where Stutsman County's reported results fell, 2008 to 2017, laboratory, beside North Dakota and the United States
ResultStutsman County testsStutsman County shareNorth Dakota shareU.S. shareAgainst North Dakota
Under 2 pCi/L288.0%18.3%39.6%−10.3 points
2 to 4 pCi/L6518.5%22.4%24.7%−3.9 points
4 pCi/L and above25873.5%59.3%35.7%+14.2 points
Stutsman County ranked among the 29 North Dakota counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Walsh County2 of 2913279.5%9.8 pCi/L
Benson County3 of 293177.4%6.2 pCi/L
Ramsey County4 of 2913476.9%6.9 pCi/L
Grand Forks County5 of 2968075.9%8.8 pCi/L
Dunn County6 of 293574.3%7.1 pCi/L
Stutsman County7 of 2935173.5%5.8 pCi/L
McIntosh County8 of 293271.9%7.0 pCi/L
Bowman County9 of 293571.4%5.8 pCi/L
LaMoure County10 of 294470.5%5.2 pCi/L
Barnes County11 of 298367.5%5.6 pCi/L
Dickey County12 of 297067.1%4.8 pCi/L
Stutsman County ten-year laboratory totals, against North Dakota's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestNorth Dakota, pooledChange from the row before
2008 to 201735173.5%5.8 pCi/L56.7 pCi/L59.3%+1.3 points
2007 to 201629972.2%5.8 pCi/L56.7 pCi/L58.7%+0.9 points
2006 to 201524771.3%5.8 pCi/L56.7 pCi/L56.3%+1.6 points
2005 to 201423469.7%5.8 pCi/L56.7 pCi/L54.0%First on file

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

Stutsman County, Geology

The ground under Stutsman County

Predicted

USGS's geologic map puts all of Stutsman County's mapped land in one class: high radon potential. All of it lies in the area the map calls Great Plains (Glaciated), to which USGS gives a radon index of 13, in the high band (12 to 17).

USGS's geologic areas under Stutsman County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Great Plains (Glaciated)Glacial deposits derived from Cretaceous shales containing higher than average amounts of uranium.High13100%

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

Stutsman County beside the ground around it

On high-potential ground Stutsman County is close to North Dakota as a whole: 100% of its land against 98.9%. Of the 7 counties that border it, none has as large a share of high-potential ground; Barnes County comes nearest at 100%.

Share of land by USGS radon potential: Stutsman County, the 7 counties bordering it and North Dakota
AreaEPA zoneLow potentialModerate potentialHigh potential
Stutsman CountyZone 1NoneNone100%
LaMoure CountyZone 1NoneNone100%
Logan CountyZone 1NoneNone100%
Kidder CountyZone 1NoneNone100%
Barnes CountyZone 1NoneNone100%
Foster CountyZone 1NoneNone100%
Griggs CountyZone 1NoneNone100%
Wells CountyZone 1NoneNone100%
North Dakota53 counties, pooled by land areaVariesNone1.1%98.9%

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

Local help

Stutsman County, Local resources

Radon testing and mitigation in Stutsman County

What North Dakota's program says
Phone
701-328-5166
Email
jOtto@nd.gov

What it means

Stutsman County, Questions

Questions about radon in Stutsman County

Are radon levels high in Stutsman County?

Over the 2008 to 2017 laboratory totals, 73.5% of the radon tests reported to CDC for Stutsman County, North Dakota were at or above 4 pCi/L, and the median reported pre-mitigation result was 5.8 pCi/L. Of 29 North Dakota counties with 30 or more tests for the same period, 6 reported a higher share; pooled, the state comes to 59.3%.

Which counties border Stutsman County?

Stutsman County borders 7 counties: LaMoure County, Logan County, Kidder County, Barnes County, Foster County, Griggs County and Wells County.

Products

Stutsman County, Products

Testing a home in Stutsman County

In Stutsman County, 73.5% of 351 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 59.3% pooled across North Dakota. In Zone 1 the year-round level in Stutsman 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

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

Explore

Stutsman County, Bordering counties

Counties bordering Stutsman County

Calculated by Radon411

Stutsman County, Cities and towns

Cities and towns in Stutsman County

About 21,414 people live in Stutsman County by the Census Bureau's estimate for July 1, 2025, 130 fewer than in 2020 (−0.6%). Spread over its land, that is 9.6 people to the square mile. Jamestown alone is home to 15,688 of them, 73.3% of the total. Together its 11 incorporated places hold 78.1% of those residents; the other 21.9% live outside any of them. Testing is reported here more often than across the state: CDC's 351 reported tests for 2008 to 2017 come to 16.4 for every 1,000 residents (2025 estimate), against 8.3 for North Dakota.

From Jamestown to Courtenay, CDC publishes no figure by town: each reads Stutsman County's.

The cities and towns in Stutsman County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Jamestown15,688−0.8%73.3%
Medina262−2.2%1.2%
Streeter150−1.3%0.7%
Kensal146−1.4%0.7%
Spiritwood Lake96+3.2%0.4%
Montpelier87Level0.4%
Buchanan84−2.3%0.4%
Cleveland81+42.1%0.4%
Woodworth46Level0.2%
Pingree43+4.9%0.2%
Courtenay37−2.6%0.2%

11 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).

Stutsman County, Homes

Homes in Stutsman County

Of Stutsman County's 10,397 homes, 58% are detached houses, against 57% across North Dakota; 23% are in buildings of five or more homes. The homes are older than North Dakota's as a whole: half were built before 1973 (1981 for North Dakota), and 34% date from before 1960. 64% of occupied homes are lived in by their owner (North Dakota: 63%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Stutsman County, North Dakota, 2019 to 2023
HomesStutsman CountyNorth Dakota
Housing units10,397374,866
Detached houses58%57%
In buildings of 5 or more23%25%
Mobile homes7%7%
Built before 196034%24%
Built since 200019%31%
Middle year built19731981
Owner-occupied64%63%

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