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Radon Levels in Fisher County, Texas

EPA puts Fisher County in Zone 3, its lowest radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

  • Nearest county

    57.8%

    Lubbock County, 102 miles

    Lubbock
    57.8%
    Texas
    10.4%

    Share at 4+ pCi/L, 128 tests, 2007 to 2016

  • Ground above low

    None

    27.3 pts below Texas

    Fisher
    0.0%
    Texas
    27.3%

    Share of land USGS rates moderate or high potential

  • Tests reported

    0

    None published

    A home here needs its own test

  • 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 Fisher 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

Fisher County, At a glance

Fisher County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Fisher 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

No CDC test figures here

CDC has published no radon test figures for Fisher County. Lubbock County, 102 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.

How to read these figures

Fisher County, Compared

Fisher County radon figures, compared

Calculated by Radon411

Fisher County has no radon test figure of its own from CDC, whose counts over the 2007 to 2016 laboratory totals name 140 other Texas counties and leave it out. Pooled across 140 Texas counties, 10.4% of reported tests reached that level; across every county in the country with a figure, 35.8%.

The nearest counties with a figure are Lubbock County (102 miles away) at 57.8%, Midland County (113 miles away) at 1.0% and Randall County (176 miles away) at 71.4%. Statewide for the same period, Randall County reported the highest share (71.4%) and Nueces County the lowest (0.0%).

EPA's 1993 map puts Fisher 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.

Texas, the United States and the counties around Fisher County, 2007 to 2016, laboratory
AreaTestsAt or above 4 pCi/LMedian
Texas, pooled140 counties, pooled4,54810.4%Not pooled
United States, pooled2,666 counties, pooled1,939,02535.8%Not pooled
Randall Countyhighest in the state8471.4%6.2 pCi/L
Nueces Countylowest in the state450.0%0.6 pCi/L
Scurry County, TXborders it1100.0%11.1 pCi/L
Taylor County, TXborders it1811.1%0.6 pCi/L
Nolan County, TXborders it30.0%0.9 pCi/L
Jones County, TXborders it10.0%0.7 pCi/L
The nearest Texas counties to Fisher County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Lubbock County102 mi12857.8%4.8 pCi/L
Midland County113 mi1001.0%0.7 pCi/L
Randall County176 mi8471.4%6.2 pCi/L
Tarrant County181 mi31210.6%0.9 pCi/L
Denton County193 mi1817.2%0.9 pCi/L
Potter County202 mi7020.0%1.1 pCi/L
McLennan County205 mi4117.1%1.0 pCi/L
Bell County208 mi3514.3%1.1 pCi/L

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

Fisher County, Geology

The ground under Fisher County

Predicted

USGS's geologic map puts all of Fisher County's mapped land in one class: low radon potential. All of it lies in the area the map calls Central Texas, to which USGS gives a radon index of 7, in the low band (5 to 8).

USGS's geologic areas under Fisher County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Central TexasCretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite.Low7100%

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

Fisher County beside the ground around it

Across Texas 0.5% of the land is rated high; none of Fisher County's is. Of the 7 counties that border it, 3 have more moderate-potential ground, Mitchell County the most at 61.5%.

Share of land by USGS radon potential: Fisher County, the 7 counties bordering it and Texas
AreaEPA zoneLow potentialModerate potentialHigh potential
Fisher CountyZone 3100%NoneNone
Scurry CountyZone 363.3%36.7%None
Nolan CountyZone 3100%NoneNone
Jones CountyZone 3100%NoneNone
Stonewall CountyZone 3100%NoneNone
Kent CountyZone 341.9%58.1%None
Mitchell CountyZone 338.5%61.5%None
Taylor CountyZone 3100%NoneNone
Texas254 counties, pooled by land areaVaries72.4%26.8%0.5%

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

Local help

Fisher County, Local resources

Radon testing and mitigation in Fisher County

What it means

Fisher County, Questions

Questions about radon in Fisher County

Are radon levels high in Fisher County?

No CDC testing statistics are published here for Fisher County, Texas yet. Of the 8 nearest counties with a figure, within 208 miles, the share of tests at or above 4 pCi/L runs from 1.0% to 71.4%.

Which counties border Fisher County?

Fisher County borders 7 counties: Scurry County, Nolan County, Jones County, Stonewall County, Kent County, Mitchell County and Taylor County.

Products

Fisher County, Products

Testing a home in Fisher County

No CDC figure names Fisher County; the nearest county with one, Lubbock County (102 miles away), reported 57.8% of its tests at or above 4 pCi/L over the 2007 to 2016 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 Fisher County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Fisher County homes, compared

Explore

Fisher County, Bordering counties

Counties bordering Fisher County

Calculated by Radon411

Fisher County, Cities and towns

Cities and towns in Fisher County

Fisher County's population has barely moved since 2020: 3,692 residents on July 1, 2025 against 3,678 then, by the Census Bureau's estimates. Spread over its land, that is 4.1 people to the square mile. Hamlin, the largest place on its list (1,876 residents in all), extends beyond Fisher County, so no share of the total is worked out for it. CDC publishes no radon test count for Fisher County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).

From Hamlin to Roby, CDC publishes no figure by town: each reads Fisher County's.

The cities and towns in Fisher County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Hamlinextends beyond Fisher County1,876+2.9%Counted whole
Rotan1,333−0.1%36.1%
Roby589Level16.0%

3 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 Fisher County is counted whole, so it has no share.

Fisher County, Homes

Homes in Fisher County

Fisher County is a place of houses on their own lots: 85% of its 2,041 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1962 (1990 for Texas), and 47% date from before 1960. Owners live in 82% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.

Homes in Fisher County, Texas, 2019 to 2023
HomesFisher CountyTexas
Housing units2,04111,890,808
Detached houses85%65%
In buildings of 5 or more1%21%
Mobile homes10%7%
Built before 196047%13%
Built since 200011%37%
Middle year built19621990
Owner-occupied82%63%

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