
Short-term kit![]()
RA100 short-term liquid scintillation radon test kit
- Lab fee extra
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
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
2 of 6 neighbours have 30+ tests, 2008 to 2017
Nearest county
27.0%
Lincoln County, 39 miles
Share at 4+ pCi/L, 895 tests, 2008 to 2017
Ground above low
None
71.8 pts below Nebraska
Share of land USGS rates moderate or high potential
Tests reported
10
Too few for a share
2008 to 2017, laboratory
EPA radon zone
Zone 3
Lower potential
1 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for McPherson County
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
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
Predicted: EPA radon zone
USGS geologic potential: Low 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 |
|---|---|
| 2015 | 0.0% |
| 2016 | 0.0% |
| 2017 | 0.0% |
| 2019 | 0.0% |
| 2020 | 33.3% |
| 2023 | 0.0% |
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.
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).
McPherson County, Compared
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.
Pooled shares: Radon411's sum of CDC's county counts for one period.
McPherson County, Geology
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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Sand Hills | Quaternary windblown sand. | Low | 8 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
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%.
The map rates the ground, not the air in any home.
Local help
McPherson County, Local resources
Some local programs distribute radon kits for free or a reduced cost.
If radon testing is done in schools, offices, or other places of work, it must be done by a licensed radon measurement business.
What it means
McPherson County, Questions
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%.
McPherson County borders 6 counties: Hooker County, Logan County, Arthur County, Thomas County, Lincoln County and Keith County.
Products
McPherson County, Products
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 monitors: 1 of 3
Explore
McPherson County, Bordering counties
55.0%at or above 4 pCi/L
Median 4.3 pCi/L · 120 tests
27.0%at or above 4 pCi/L
Median 2.6 pCi/L · 895 tests
12.5%at or above 4 pCi/L
Median 2.3 pCi/L · 8 tests
11.1%at or above 4 pCi/L
Median 0.7 pCi/L · 9 tests
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 3 tests
0.0%at or above 4 pCi/L
Median 1.5 pCi/L · 9 tests
McPherson County, Residents
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
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 | McPherson County | Nebraska |
|---|---|---|
| Housing units | 259 | 855,631 |
| Detached houses | 95% | 72% |
| In buildings of 5 or more | 0% | 17% |
| Mobile homes | 5% | 3% |
| Built before 1960 | 54% | 32% |
| Built since 2000 | 6% | 22% |
| Middle year built | 1957 | 1975 |
| Owner-occupied | 73% | 67% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.