Skip to content
RADON411

Locations and reports

Radon Levels in Platte County, Nebraska

EPA puts Platte County in Zone 1, its highest radon zone, and 26.4% of its 212 reported radon tests (2023) were 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

    26.4%

    11.8 pts below NE

    Platte
    26.4%
    Nebraska
    38.2%

    212 tests, 2023

  • Median result

    1.6pCi/L

    Below action level

    Platte
    1.6 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2023

  • Tests reported

    212

    8th of 33 by tests

    Platte
    212
    Lancaster
    4,058

    Reported to CDC before any fix, 2023

  • 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 Nebraska

    29 of 33

    Lowest quarter

    Platte
    26.4%
    Gage
    79.8%

    By share, of 33 with 30+ tests

Read a result for Platte County

Starts at Platte County's median, 1.6 pCi/L

1.6pCi/L

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

EPA’s reading of 1.6 pCi/L

Below 2 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 below 2 pCi/L, the level at which EPA says a fix should be considered. Platte County's median reported result, 2023.

Interpret this reading

The data

Platte County, At a glance

Platte County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Platte 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 83% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Platte County, 2023

Share of reported tests at or above 4 pCi/L, by year, Platte County
Share of reported tests at or above 4 pCi/L, by year, Platte County
YearShare of reported tests at or above 4 pCi/L
201444.2%
201555.6%
201647.0%
201753.3%
201836.6%
201946.5%
202036.2%
202128.1%
202239.4%
202326.4%

2023: 26.4%. Across these years the share ran from 26.4% to 55.6%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

These are the 212 tests reported to CDC for Platte 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).

How to read these figures

Platte County, Compared

Platte County radon figures, compared

Calculated by Radon411

Platte County's 212 reported tests in 2023 had a middle value of 1.6 pCi/L and a maximum of 29.9 pCi/L, and 26.4% reached 4 pCi/L. Nebraska as a whole (86 Nebraska counties, pooled) comes to 38.2%: 11.8 points higher than here.

Among its state's counties it ranks 29th of 33 Nebraska counties with 30 or more tests for the same period. Statewide for the same period, Gage County reported the highest share (79.8%) and Dakota County the lowest (3.1%).

Below the action level, 118 tests (55.7%) came in under 2 pCi/L, against 39.2% statewide, and 38 tests (17.9%) fell between 2 and 4, against 22.6% statewide. The busiest year on file was 2017, with 1,104 tests reported; the quietest, 2022, had 71.

EPA's 1993 zone map puts Platte County in Zone 1, a predicted county average above 4 pCi/L. USGS geology rates 83% of the county's land high radon potential.

Next door, the shares run from 66.7% in Madison County to 68.8% in Stanton County. Over 10 years of annual figures the share fell 17.8 points, from 44.2% in 2014 to 26.4% in 2023; its peak was 55.6% in 2015.

CDC also counts 15 tests taken after mitigation in Platte County for the same period: tests in homes where a fix was already in.

Share of reported tests at or above 4 pCi/L by year, Platte County against Nebraska2014 to 2023, years with 30 or more tests: Platte County 44.2% to 26.4%, the state's pooled share 38.2% in 2023.
Platte CountyNebraska, pooled
Share of reported tests at or above 4 pCi/L by year, Platte County against Nebraska: data table
YearTestsPlatte County, at or above 4 pCi/LNebraska, pooled
201449544.2%50.5%
201559455.6%53.3%
201695147.0%47.4%
20171,10453.3%47.7%
20181,08936.6%44.5%
201951646.5%44.3%
202038136.2%42.2%
202151328.1%34.9%
20227139.4%34.0%
202321226.4%38.2%
Platte County against Nebraska, the United States and nearby counties, 2023
AreaTestsAt or above 4 pCi/LMedianDifference from Platte County
Platte County21226.4%1.6 pCi/LThis county
Nebraska, pooled86 counties, pooled11,16338.2%Not pooled+11.8 points
United States, pooled642 counties, pooled128,74033.4%Not pooled+7.0 points
Gage Countyhighest in the state8479.8%9.4 pCi/L+53.4 points
Dakota Countylowest in the state1303.1%0.4 pCi/L−23.3 points
Nance County, NEborders it6100.0%12.3 pCi/L+73.6 points
Polk County, NEborders it1894.4%7.0 pCi/L+68.0 points
Boone County, NEborders it1080.0%7.9 pCi/L+53.6 points
Stanton County, NEborders it3268.8%7.8 pCi/L+42.4 points
Madison County, NEborders it21366.7%5.8 pCi/L+40.3 points
Butler County, NEborders it2356.5%7.0 pCi/L+30.1 points
Colfax County, NEborders it1855.6%7.6 pCi/L+29.2 points
Merrick County, NEborders it1216.7%1.9 pCi/L−9.7 points
Where Platte County's reported results fell, 2023, beside Nebraska and the United States
ResultPlatte County testsPlatte County shareNebraska shareU.S. shareAgainst Nebraska
Under 2 pCi/L11855.7%39.2%41.4%+16.5 points
2 to 4 pCi/L3817.9%22.6%25.2%−4.7 points
4 pCi/L and above5626.4%38.2%33.4%−11.8 points
Platte County ranked among the 33 Nebraska counties with 30 or more tests, by share at or above 4 pCi/L, 2023
CountyRankTestsAt or above 4 pCi/LMedian
Sarpy County23 of 3375551.9%4.1 pCi/L
Douglas County24 of 332,75438.7%2.9 pCi/L
Cheyenne County25 of 335536.4%3.6 pCi/L
Box Butte County26 of 335435.2%3.3 pCi/L
Scotts Bluff County27 of 3327327.5%1.8 pCi/L
Lancaster County28 of 334,05826.7%1.6 pCi/L
Platte County29 of 3321226.4%1.6 pCi/L
Dawson County30 of 339718.6%2.0 pCi/L
Hall County31 of 3325317.8%1.7 pCi/L
Lincoln County32 of 3327112.2%2.1 pCi/L
Dakota County33 of 331303.1%0.4 pCi/L
Platte County radon tests by year, against Nebraska's pooled share
YearTestsAt or above 4 pCi/LMedianHighestNebraska, pooledChange from the row before
202321226.4%1.6 pCi/L29.9 pCi/L38.2%−13.0 points
20227139.4%3.4 pCi/L18.0 pCi/L34.0%+11.3 points
202151328.1%2.6 pCi/L26.2 pCi/L34.9%−8.1 points
202038136.2%2.8 pCi/L38.6 pCi/L42.2%−10.3 points
201951646.5%3.0 pCi/L21.8 pCi/L44.3%+9.9 points
20181,08936.6%3.2 pCi/L46.5 pCi/L44.5%−16.7 points
20171,10453.3%4.3 pCi/L30.5 pCi/L47.7%+6.3 points
201695147.0%3.7 pCi/L26.4 pCi/L47.4%−8.6 points
201559455.6%4.3 pCi/L39.6 pCi/L53.3%+11.4 points
201449544.2%3.5 pCi/L21.9 pCi/L50.5%First on file

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

Platte County, Geology

The ground under Platte County

Predicted

Most of the ground under Platte County is one class on USGS's geologic map: 82.6% of its land is high radon potential, with 17.4% moderate. The map puts 82.6% of Platte County in the area it calls Pre-Wisconsin glacial deposits and 17.4% in Loess over Tertiary sediments. USGS gives the first a radon index of 13, in the high band (12 to 17), and the second 11, in the moderate band (9 to 11).

USGS's geologic areas under Platte County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Pre-Wisconsin glacial depositsLoess-mantled glacial drift.High1382.6%
Loess over Tertiary sedimentsTertiary bedrock covered by varying thicknesses of loess.Moderate1117.4%

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

Platte County beside the ground around it

Platte County has more high-potential ground than Nebraska as a whole: 82.6% of its land against 40.9%. Of the 8 counties that border it, 5 have more high-potential ground, Colfax County the most at 100%.

Share of land by USGS radon potential: Platte County, the 8 counties bordering it and Nebraska
AreaEPA zoneLow potentialModerate potentialHigh potential
Platte CountyZone 1None17.4%82.6%
Colfax CountyZone 1NoneNone100%
Madison CountyZone 1None10.0%90.0%
Stanton CountyZone 1NoneNone100%
Boone CountyZone 17.3%None92.7%
Nance CountyZone 1None35.5%64.5%
Polk CountyZone 1None26.1%73.9%
Butler CountyZone 1None0.1%99.9%
Merrick CountyZone 2None99.2%0.8%
Nebraska93 counties, pooled by land areaVaries28.2%30.9%40.9%

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

Local help

Platte County, Local resources

Radon testing and mitigation in Platte County

Listed radon businesses with an address in Platte County:

Listed radon professionals by town: Platte Center

What Nebraska's program says
Phone
(402) 471-1005
Licensing of radon professionals
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

Platte County, Questions

Questions about radon in Platte County

Are radon levels high in Platte County?

In 2023, 26.4% of the radon tests reported to CDC for Platte County, Nebraska were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.6 pCi/L. Of 33 Nebraska counties with 30 or more tests for the same period, 28 reported a higher share; pooled, the state comes to 38.2%.

Which counties border Platte County?

Platte County borders 8 counties: Colfax County, Madison County, Stanton County, Boone County, Nance County, Polk County, Butler County and Merrick County.

Products

Platte County, Products

Testing a home in Platte County

In Platte County, 26.4% of 212 tests reported to CDC in 2023 reached 4 pCi/L, against 38.2% pooled across Nebraska. In Zone 1 the year-round level in Platte 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

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

Explore

Platte County, Bordering counties

Counties bordering Platte County

Calculated by Radon411

Platte County, Cities and towns

Cities and towns in Platte County

The Census Bureau estimates 35,649 residents in Platte County for July 1, 2025, 1,347 more than in 2020 (+3.9%). That works out to 53 people per square mile of land. Columbus alone is home to 25,248 of them, 70.8% of the total. CDC's 212 reported tests for 2023 work out to 5.9 per 1,000 residents (2025 estimate), close to Nebraska's 5.5.

From Columbus to Cornlea, CDC publishes no figure by town: each reads Platte County's.

The cities and towns in Platte County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Columbus25,248+4.8%70.8%
Humphrey875+3.3%2.5%
Newman Groveextends beyond Platte County632−4.1%Counted whole
Duncan388+1.0%1.1%
Platte Center339+1.2%1.0%
Lindsay331+18.6%0.9%
Monroe291+0.7%0.8%
Creston174Level0.5%
Tarnov47Level0.1%
Cornlea34LevelUnder 0.1%

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 Platte County is counted whole, so it has no share.

Platte County, Homes

Homes in Platte County

Platte County is a place of houses on their own lots: 76% of its 14,210 homes are detached single-family houses, against 72% across Nebraska. Half of its homes were built before 1973, close to Nebraska's 1975: 33% date from before 1960 and 17% from 2000 or later. 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 Platte County, Nebraska, 2019 to 2023
HomesPlatte CountyNebraska
Housing units14,210855,631
Detached houses76%72%
In buildings of 5 or more10%17%
Mobile homes5%3%
Built before 196033%32%
Built since 200017%22%
Middle year built19731975
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.