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Radon Levels in McPherson County, Nebraska

EPA puts McPherson County in Zone 3, its lowest radon zone, and only 1 radon test from it is on file with CDC (2023). Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Highest bordering

    55.0%

    Keith County

    Keith
    55.0%
    Lincoln
    27.0%

    2 of 6 neighbours have 30+ tests, 2008 to 2017

  • Nearest county

    27.0%

    Lincoln County, 39 miles

    Lincoln
    27.0%
    Nebraska
    58.5%

    Share at 4+ pCi/L, 895 tests, 2008 to 2017

  • Ground above low

    None

    71.8 pts below Nebraska

    McPherson
    0.0%
    Nebraska
    71.8%

    Share of land USGS rates moderate or high potential

  • Tests reported

    10

    Too few for a share

    McPherson
    10
    Needed
    30

    2008 to 2017, laboratory

  • EPA radon zone

    Zone 3

    Lower potential

    1. 1
    2. 2
    3. Zone 3

    1 highest, 3 lowest

    EPA predicts under 2 pCi/L indoors

Read a result for McPherson County

Starts at EPA's action level

4.0pCi/L

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

EPA’s reading of 4.0 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.

The data

McPherson County, At a glance

McPherson County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for McPherson County as a whole is an average indoor of less than 2 pCi/L (less than 75 Bq/m³). A low zone clears no address in it: homes above EPA's turn up in all three zones.

USGS geologic potential: Low across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for McPherson County, 2023

Share of reported tests at or above 4 pCi/L, by year, McPherson County
Share of reported tests at or above 4 pCi/L, by year, McPherson County
YearShare of reported tests at or above 4 pCi/L
20150.0%
20160.0%
20170.0%
20190.0%
202033.3%
20230.0%

2023: 0.0%. Across these years the share ran from 0.0% to 33.3%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

Only 1 test was reported to CDC for McPherson County over 2023, and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor 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

McPherson County, Compared

McPherson County radon figures, compared

Calculated by Radon411

CDC's largest figure for McPherson County rests on 10 tests over the 2008 to 2017 laboratory totals, 0 of them at or above 4 pCi/L, so each test moves its share by 10.0 points and no rank or comparison is drawn from it. Results reached as high as 3.4 pCi/L, with a middle value of 1.0 pCi/L.

Of the counties bordering it, 2 have a figure over the 2008 to 2017 laboratory totals: Keith County reported the largest share at or above 4 pCi/L, 55.0%, and Lincoln County the smallest, 27.0%. Farther out, Perkins County (58 miles away) at 50.0%, Garden County (66 miles away) at 37.5% and Cherry County (67 miles away) at 13.3% have figures too. Pooled across 93 Nebraska counties, 58.5% of reported tests reached that level; across every county in the country with a figure, 35.7%.

Statewide for the same period, Clay County reported the highest share (85.1%) and Cherry County the lowest (13.3%). EPA's 1993 map puts McPherson County in Zone 3, its lowest label: a predicted county average under 2 pCi/L. USGS geology rates 100% of the county's land low radon potential.

Nebraska, the United States and the counties around McPherson County, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedian
Nebraska, pooled93 counties, pooled42,78258.5%Not pooled
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled
Clay Countyhighest in the state19485.1%8.6 pCi/L
Cherry Countylowest in the state3013.3%1.7 pCi/L
Keith County, NEborders it12055.0%4.3 pCi/L
Lincoln County, NEborders it89527.0%2.6 pCi/L
Logan County, NEborders it812.5%2.3 pCi/L
Thomas County, NEborders it911.1%0.7 pCi/L
Arthur County, NEborders it90.0%1.5 pCi/L
Hooker County, NEborders it30.0%0.8 pCi/L
The nearest Nebraska counties to McPherson County with 30 or more tests, 2008 to 2017, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Lincoln County39 mi89527.0%2.6 pCi/L
Keith County40 mi12055.0%4.3 pCi/L
Perkins County58 mi4050.0%4.0 pCi/L
Garden County66 mi5637.5%3.5 pCi/L
Cherry County67 mi3013.3%1.7 pCi/L
Custer County70 mi13252.3%4.2 pCi/L
Deuel County73 mi4942.9%3.5 pCi/L
Chase County79 mi4468.2%6.5 pCi/L
McPherson County radon tests by year, against Nebraska's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNebraska, pooledChange from the row before
202310.0%2.2 pCi/L2.2 pCi/L38.2%−33.3 points
2020933.3%1.3 pCi/L4.3 pCi/L42.2%+33.3 points
201960.0%2.0 pCi/L2.1 pCi/L44.3%Level
201730.0%2.7 pCi/L2.7 pCi/L47.7%Level
201630.0%3.4 pCi/L3.4 pCi/L47.4%Level
201530.0%1.4 pCi/L1.4 pCi/L53.3%First on file

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

McPherson County, Geology

The ground under McPherson County

Predicted

USGS's geologic map puts all of McPherson County's mapped land in one class: low radon potential. All of it lies in the area the map calls Sand Hills, to which USGS gives a radon index of 8, in the low band (5 to 8).

USGS's geologic areas under McPherson County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Sand HillsQuaternary windblown sand.Low8100%

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

McPherson County beside the ground around it

Across Nebraska 40.9% of the land is rated high; none of McPherson County's is. Of the 6 counties that border it, 2 have more high-potential ground, Lincoln County the most at 25.2%.

Share of land by USGS radon potential: McPherson County, the 6 counties bordering it and Nebraska
AreaEPA zoneLow potentialModerate potentialHigh potential
McPherson CountyZone 3100%NoneNone
Hooker CountyZone 3100%NoneNone
Logan CountyZone 366.4%33.6%None
Arthur CountyZone 3100%NoneNone
Thomas CountyZone 3100%NoneNone
Lincoln CountyZone 362.2%12.6%25.2%
Keith CountyZone 241.6%56.6%1.8%
Nebraska93 counties, pooled by land areaVaries28.2%30.9%40.9%

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

What it means

McPherson County, Questions

Questions about radon in McPherson County

Are radon levels high in McPherson County?

In 2023, 0.0% of the radon tests reported to CDC for McPherson County, Nebraska were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.2 pCi/L. Of the counties bordering it, 2 have a figure over the 2008 to 2017 laboratory totals: Keith County reported the largest share at or above 4 pCi/L, 55.0%, and Lincoln County the smallest, 27.0%.

Which counties border McPherson County?

McPherson County borders 6 counties: Hooker County, Logan County, Arthur County, Thomas County, Lincoln County and Keith County.

Products

McPherson County, Products

Testing a home in McPherson County

No CDC figure names McPherson County; the nearest county with one, Lincoln County (39 miles away), reported 27.0% of its tests at or above 4 pCi/L over the 2008 to 2017 laboratory totals, the only reading nearby until a test of this home. Zone 3 is the lowest label, yet homes at or above 4 pCi/L occur in every zone: a short-term kit (2 to 90 days) is the quick first check in McPherson County.

Test kits and monitors3

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Best radon monitors for McPherson County homes, compared

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McPherson County, Bordering counties

Counties bordering McPherson County

Calculated by Radon411

McPherson County, Residents

Who lives in McPherson County

McPherson County has been losing residents: from 396 in 2020 to 369 on July 1, 2025, a fall of 6.8% by the Census Bureau's estimates. Spread over its land, that is 0.4 people to the square mile. CDC's 10 reported tests for 2008 to 2017 work out to 27.1 per 1,000 residents (2025 estimate), close to Nebraska's 21.2.

Census lists no incorporated place in McPherson County: every home in it reads the county's figures.

Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).

McPherson County, Homes

Homes in McPherson County

McPherson County is a place of houses on their own lots: 95% of its 259 homes are detached single-family houses, against 72% across Nebraska. The homes are older than Nebraska's as a whole: half were built before 1957 (1975 for Nebraska), and 54% date from before 1960. 73% of occupied homes are lived in by their owner (Nebraska: 67%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in McPherson County, Nebraska, 2019 to 2023
HomesMcPherson CountyNebraska
Housing units259855,631
Detached houses95%72%
In buildings of 5 or more0%17%
Mobile homes5%3%
Built before 196054%32%
Built since 20006%22%
Middle year built19571975
Owner-occupied73%67%

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