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Radon Levels in Archer County, Texas

EPA puts Archer 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

    7.2%

    Denton County, 95 miles

    Denton
    7.2%
    Texas
    10.4%

    Share at 4+ pCi/L, 181 tests, 2007 to 2016

  • Ground above low

    None

    27.3 pts below Texas

    Archer
    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 Archer 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

Archer County, At a glance

Archer County at a glance

Predicted: EPA radon zone

EPA Zone 3: lower predicted potential

is EPA's lowest class, and its forecast for Archer 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 Archer County. Denton County, 95 miles away, is the nearest county with a figure over the 2007 to 2016 laboratory totals.

How to read these figures

Archer County, Compared

Archer County radon figures, compared

Calculated by Radon411

Archer 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 Denton County (95 miles away) at 7.2%, Tarrant County (100 miles away) at 10.6% and Dallas County (125 miles away) at 8.7%. 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 Archer 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 Archer 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
Wilbarger County, TXborders it10.0%2.6 pCi/L
Wichita County, TXborders it90.0%0.7 pCi/L
The nearest Texas counties to Archer County with 30 or more tests, 2007 to 2016, laboratory
CountyDistanceTestsAt or above 4 pCi/LMedian
Denton County95 mi1817.2%0.9 pCi/L
Tarrant County100 mi31210.6%0.9 pCi/L
Dallas County125 mi6998.7%1.0 pCi/L
Collin County126 mi2847.7%1.0 pCi/L
McLennan County166 mi4117.1%1.0 pCi/L
Lubbock County181 mi12857.8%4.8 pCi/L
Bell County191 mi3514.3%1.1 pCi/L
Randall County206 mi8471.4%6.2 pCi/L

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

Archer County, Geology

The ground under Archer County

Predicted

USGS's geologic map puts all of Archer 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 Archer 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.

Archer County beside the ground around it

Across Texas 0.5% of the land is rated high; none of Archer County's is. None of the 7 counties that border it has any moderate-potential ground either.

Share of land by USGS radon potential: Archer County, the 7 counties bordering it and Texas
AreaEPA zoneLow potentialModerate potentialHigh potential
Archer CountyZone 3100%NoneNone
Wichita CountyZone 3100%NoneNone
Clay CountyZone 3100%NoneNone
Baylor CountyZone 3100%NoneNone
Young CountyZone 3100%NoneNone
Jack CountyZone 3100%NoneNone
Throckmorton CountyZone 3100%NoneNone
Wilbarger 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

Archer County, Local resources

Radon testing and mitigation in Archer County

What it means

Archer County, Questions

Questions about radon in Archer County

Are radon levels high in Archer County?

No CDC testing statistics are published here for Archer County, Texas yet. Of the 8 nearest counties with a figure, within 206 miles, the share of tests at or above 4 pCi/L runs from 7.2% to 71.4%.

Which counties border Archer County?

Archer County borders 7 counties: Wichita County, Clay County, Baylor County, Young County, Jack County, Throckmorton County and Wilbarger County.

Products

Archer County, Products

Testing a home in Archer County

No CDC figure names Archer County; the nearest county with one, Denton County (95 miles away), reported 7.2% 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 Archer County.

Test kits and monitors3

See every kit and monitor

Best radon monitors for Archer County homes, compared

Explore

Archer County, Bordering counties

Counties bordering Archer County

Calculated by Radon411

Archer County, Cities and towns

Cities and towns in Archer County

Archer County is growing: the Census Bureau puts it at 9,129 residents on July 1, 2025, up 6.7% from 8,553 in 2020. That works out to 10 people per square mile of land. No town dominates: Holliday, the largest, has 1,733 residents, 19.0% of the total. CDC publishes no radon test count for Archer County; across Texas its counts for 2007 to 2016 come to 0.1 tests for every 1,000 residents (2025 estimate).

From Holliday to Megargel, CDC publishes no figure by town: each reads Archer County's.

The cities and towns in Archer County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Holliday1,733+13.4%19.0%
Archer City1,627+1.6%17.8%
Lakeside City1,307+20.6%14.3%
Scotland432+4.1%4.7%
Windthorstextends beyond Archer County354+2.9%Counted whole
Megargel178+1.1%1.9%

6 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 Archer County is counted whole, so it has no share.

Archer County, Homes

Homes in Archer County

Archer County is a place of houses on their own lots: 85% of its 3,920 homes are detached single-family houses, against 65% across Texas. The homes are older than Texas' as a whole: half were built before 1979 (1990 for Texas), and 27% date from before 1960. Owners live in 85% of the occupied homes (Texas: 63%), so for most households a test and a fix are their own to order.

Homes in Archer County, Texas, 2019 to 2023
HomesArcher CountyTexas
Housing units3,92011,890,808
Detached houses85%65%
In buildings of 5 or more1%21%
Mobile homes11%7%
Built before 196027%13%
Built since 200018%37%
Middle year built19791990
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.