Skip to content
RADON411

Locations and reports

Radon Levels in LaMoure County, North Dakota

EPA puts LaMoure County in Zone 1, its highest radon zone, and high results are common there: 70.5% of the 44 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

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    70.5%

    11.2 pts above ND

    LaMoure
    70.5%
    ND
    59.3%

    44 tests, 2008 to 2017

  • Median result

    5.2pCi/L

    Action level reached

    LaMoure
    5.2 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    44

    21st of 29 by tests

    LaMoure
    44
    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

    10 of 29

    Middle half

    LaMoure
    70.5%
    Pembina
    82.5%

    By share, of 29 with 30+ tests

Read a result for LaMoure County

Starts at LaMoure County's median, 5.2 pCi/L

5.2pCi/L

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

EPA’s reading of 5.2 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. LaMoure County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

LaMoure County, At a glance

LaMoure County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

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

Reported results by concentration band, LaMoure County, 2008 to 2017, laboratory
Under 2 pCi/L: 7%2 to 4 pCi/L: 23%4 pCi/L and above: 70%

Of 44 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, LaMoure County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L36.8%
2 to 4 pCi/L1022.7%
4 pCi/L and above3170.5%
What these figures count

These are the 44 tests reported to CDC for LaMoure 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

LaMoure County, Compared

LaMoure County radon figures, compared

Calculated by Radon411

More than half: 70.5% of the 44 radon tests reported to CDC for LaMoure County over the 2008 to 2017 laboratory totals read at least 4 pCi/L. That places it 10th of 29 North Dakota counties with 30 or more tests for the same period. That is 11.2 points above the 59.3% pooled from 53 North Dakota counties.

The median result, 5.2 pCi/L, sits above EPA's 4 pCi/L action level, and the top reported result was 17.3 pCi/L. The rest split 6.8% under 2 pCi/L and 22.7% 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 70.5% share point the same way here.

2 of its 5 bordering counties with figures ran higher, led by Stutsman County at 73.5%; Ransom County reported 61.6%. 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 LaMoure County went from 37 tests (2005 to 2014) to 44 (2008 to 2017), the share going from 73.0% to 70.5%.

Nationally, every county with a figure for the same period pools to 35.7%; LaMoure County sits 34.8 points above it.

LaMoure County against North Dakota, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from LaMoure County
LaMoure County4470.5%5.2 pCi/LThis county
North Dakota, pooled53 counties, pooled6,60759.3%Not pooled−11.2 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−34.8 points
Pembina Countyhighest in the state5782.5%9.3 pCi/L+12.0 points
Williams Countylowest in the state20433.8%2.9 pCi/L−36.7 points
Stutsman County, NDborders it35173.5%5.8 pCi/L+3.0 points
McIntosh County, NDborders it3271.9%7.0 pCi/L+1.4 points
Barnes County, NDborders it8367.5%5.6 pCi/L−3.0 points
Dickey County, NDborders it7067.1%4.8 pCi/L−3.4 points
Ransom County, NDborders it15161.6%5.8 pCi/L−8.9 points
Logan County, NDborders it1250.0%3.7 pCi/L−20.5 points
Where LaMoure County's reported results fell, 2008 to 2017, laboratory, beside North Dakota and the United States
ResultLaMoure County testsLaMoure County shareNorth Dakota shareU.S. shareAgainst North Dakota
Under 2 pCi/L36.8%18.3%39.6%−11.5 points
2 to 4 pCi/L1022.7%22.4%24.7%+0.3 points
4 pCi/L and above3170.5%59.3%35.7%+11.2 points
LaMoure 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
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
Mountrail County13 of 294866.7%7.3 pCi/L
Bottineau County14 of 2911164.0%5.7 pCi/L
Mercer County15 of 298563.5%5.7 pCi/L
LaMoure 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 20174470.5%5.2 pCi/L17.3 pCi/L59.3%−0.9 points
2007 to 20164271.4%5.3 pCi/L14.9 pCi/L58.7%+1.1 points
2006 to 20153770.3%5.4 pCi/L14.9 pCi/L56.3%−2.7 points
2005 to 20143773.0%5.4 pCi/L14.9 pCi/L54.0%First on file

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

LaMoure County, Geology

The ground under LaMoure County

Predicted

USGS's geologic map puts all of LaMoure 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 LaMoure 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.

LaMoure County beside the ground around it

On high-potential ground LaMoure County is close to North Dakota as a whole: 100% of its land against 98.9%. Of the 6 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: LaMoure County, the 6 counties bordering it and North Dakota
AreaEPA zoneLow potentialModerate potentialHigh potential
LaMoure CountyZone 1NoneNone100%
Dickey CountyZone 1NoneNone100%
Stutsman CountyZone 1NoneNone100%
Barnes CountyZone 1NoneNone100%
Ransom CountyZone 1NoneNone100%
Logan CountyZone 1NoneNone100%
McIntosh 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

LaMoure County, Local resources

Radon testing and mitigation in LaMoure County

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

What it means

LaMoure County, Questions

Questions about radon in LaMoure County

Are radon levels high in LaMoure County?

Over the 2008 to 2017 laboratory totals, 70.5% of the radon tests reported to CDC for LaMoure County, North Dakota were at or above 4 pCi/L, and the median reported pre-mitigation result was 5.2 pCi/L. Of 29 North Dakota counties with 30 or more tests for the same period, 9 reported a higher share; pooled, the state comes to 59.3%.

Which counties border LaMoure County?

LaMoure County borders 6 counties: Dickey County, Stutsman County, Barnes County, Ransom County, Logan County and McIntosh County.

Products

LaMoure County, Products

Testing a home in LaMoure County

In LaMoure County, 70.5% of 44 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 LaMoure 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

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

Explore

LaMoure County, Bordering counties

Counties bordering LaMoure County

Calculated by Radon411

LaMoure County, Cities and towns

Cities and towns in LaMoure County

The Census Bureau estimates 4,135 residents in LaMoure County for July 1, 2025, 40 more than in 2020 (+1.0%). Spread over its land, that is 3.6 people to the square mile. No town dominates: LaMoure, the largest, has 758 residents, 18.3% of the total. Together its 8 incorporated places hold 49.6% of those residents; the other 50.4% live outside any of them. CDC's 44 reported tests for 2008 to 2017 work out to 10.6 per 1,000 residents (2025 estimate), close to North Dakota's 8.3.

From LaMoure to Berlin, CDC publishes no figure by town: each reads LaMoure County's.

The cities and towns in LaMoure County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
LaMoure758−0.8%18.3%
Edgeley584+1.0%14.1%
Kulm372+0.8%9.0%
Marion128+2.4%3.1%
Jud66+1.5%1.6%
Verona62+1.6%1.5%
Dickey50+8.7%1.2%
Berlin33+3.1%0.8%

8 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).

LaMoure County, Homes

Homes in LaMoure County

LaMoure County is a place of houses on their own lots: 86% of its 2,074 homes are detached single-family houses, against 57% across North Dakota. The homes are older than North Dakota's as a whole: half were built before 1964 (1981 for North Dakota), and 44% date from before 1960. Owners live in 85% of the occupied homes (North Dakota: 63%), so for most households a test and a fix are their own to order.

Homes in LaMoure County, North Dakota, 2019 to 2023
HomesLaMoure CountyNorth Dakota
Housing units2,074374,866
Detached houses86%57%
In buildings of 5 or more5%25%
Mobile homes3%7%
Built before 196044%24%
Built since 200010%31%
Middle year built19641981
Owner-occupied85%63%

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