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Radon Levels in Goshen County, Wyoming

EPA puts Goshen County in Zone 1, its highest radon zone, and high results are common there: 41.7% of the 168 radon tests reported to CDC (2008 to 2017, laboratory totals) came back 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

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  • Share at 4+ pCi/L

    41.7%

    2.6 pts below WY

    Goshen
    41.7%
    Wyoming
    44.3%

    168 tests, 2008 to 2017

  • Median result

    3.3pCi/L

    Below action level

    Goshen
    3.3 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    168

    11th of 22 by tests

    Goshen
    168
    Laramie
    1,834

    Reported to CDC before any fix, 2008 to 2017

  • 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 Wyoming

    15 of 22

    Middle half

    Goshen
    41.7%
    Sheridan
    69.5%

    By share, of 22 with 30+ tests

Read a result for Goshen County

Starts at Goshen County's median, 3.3 pCi/L

3.3pCi/L

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

EPA’s reading of 3.3 pCi/L

Between 2 and 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 between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Goshen County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Goshen County, At a glance

Goshen County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Goshen 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: Moderate across 95% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Goshen County, 2008 to 2017, laboratory

Reported results by concentration band, Goshen County, 2008 to 2017, laboratory
Under 2 pCi/L: 23%2 to 4 pCi/L: 35%4 pCi/L and above: 42%

Of 168 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Goshen County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L3923.2%
2 to 4 pCi/L5935.1%
4 pCi/L and above7041.7%
What these figures count

These are the 168 tests reported to CDC for Goshen County over 2008 to 2017 (laboratory totals), 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: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).

How to read these figures

Goshen County, Compared

Goshen County radon figures, compared

Calculated by Radon411

In Goshen County, about 4 in 10 reported tests over the 2008 to 2017 laboratory totals (70 of 168) were at or above EPA's action level. Against the national pool of 35.7%, the gap is 6.0 points higher. Across 23 Wyoming counties pooled together, 44.3% of tests reached that level, so Goshen County runs 2.6 points below its state.

Of 3 neighbours with a figure, 1 reported a larger share at or above 4 pCi/L and 2 a smaller one; the spread is 25.5% (Laramie County) to 57.2% (Scotts Bluff County, NE). By share, Goshen County is 15th of 22 Wyoming counties with 30 or more tests for the same period.

Half the tests came in under 3.3 pCi/L and half over it; the single highest reached 62.0 pCi/L. Below the action level, 39 tests (23.2%) came in under 2 pCi/L, against 25.5% statewide, and 59 tests (35.1%) fell between 2 and 4, against 30.2% statewide.

Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 41.7% share point the same way here. USGS geology rates 95% of the county's land moderate radon potential.

CDC's ten-year totals for Goshen County went from 159 tests (2005 to 2014) to 168 (2008 to 2017), the share going from 47.2% to 41.7%.

Goshen County against Wyoming, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Goshen County
Goshen County16841.7%3.3 pCi/LThis county
Wyoming, pooled23 counties, pooled7,63844.3%Not pooled+2.6 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled−6.0 points
Sheridan Countyhighest in the state84669.5%5.8 pCi/L+27.8 points
Uinta Countylowest in the state19924.6%2.2 pCi/L−17.1 points
Scotts Bluff County, NEborders it54057.2%4.3 pCi/L+15.5 points
Sioux County, NEborders it1931.6%1.9 pCi/L−10.1 points
Platte County, WYborders it13226.5%2.4 pCi/L−15.2 points
Laramie County, WYborders it1,83425.5%2.5 pCi/L−16.2 points
Niobrara County, WYborders it1225.0%3.5 pCi/L−16.7 points
Banner County, NEborders it40.0%2.8 pCi/L−41.7 points
Where Goshen County's reported results fell, 2008 to 2017, laboratory, beside Wyoming and the United States
ResultGoshen County testsGoshen County shareWyoming shareU.S. shareAgainst Wyoming
Under 2 pCi/L3923.2%25.5%39.6%−2.3 points
2 to 4 pCi/L5935.1%30.2%24.7%+4.9 points
4 pCi/L and above7041.7%44.3%35.7%−2.6 points
Goshen County ranked among the 22 Wyoming counties with 30 or more tests, by share at or above 4 pCi/L, 2008 to 2017, laboratory
CountyRankTestsAt or above 4 pCi/LMedian
Sweetwater County10 of 2240949.6%3.9 pCi/L
Teton County11 of 2227844.6%3.4 pCi/L
Campbell County12 of 2227143.9%3.5 pCi/L
Park County13 of 2250542.8%3.4 pCi/L
Big Horn County14 of 229942.4%3.5 pCi/L
Goshen County15 of 2216841.7%3.3 pCi/L
Carbon County16 of 228041.3%3.0 pCi/L
Washakie County17 of 2213038.5%3.2 pCi/L
Johnson County18 of 2213534.8%3.1 pCi/L
Albany County19 of 2239427.9%2.7 pCi/L
Platte County20 of 2213226.5%2.4 pCi/L
Goshen County ten-year laboratory totals, against Wyoming's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestWyoming, pooledChange from the row before
2008 to 201716841.7%3.3 pCi/L62.0 pCi/L44.3%−1.5 points
2007 to 201616243.2%3.7 pCi/L62.0 pCi/L44.6%−4.2 points
2006 to 201515447.4%3.8 pCi/L62.0 pCi/L45.3%+0.2 points
2005 to 201415947.2%3.7 pCi/L46.5 pCi/L45.5%First on file

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

Goshen County, Geology

The ground under Goshen County

Predicted

Most of the ground under Goshen County is one class on USGS's geologic map: 95.3% of its land is moderate radon potential, with 4.7% high. 95.3% of it lies in the area the map calls Tertiary Rocks, to which USGS gives a radon index of 11, in the moderate band (9 to 11).

USGS's geologic areas under Goshen County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Tertiary RocksTertiary sandstone, siltstone, and volcanic ash.Moderate1195.3%
Hartville UpliftPrecambrian granite and metasedimentary rocks.High124.7%

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

Goshen County beside the ground around it

Wyoming as a whole has more high-potential ground than Goshen County: 72.4% of its land, against 4.7% here. Of the 6 counties that border it, 4 have more high-potential ground, Niobrara County the most at 30.5%.

Share of land by USGS radon potential: Goshen County, the 6 counties bordering it and Wyoming
AreaEPA zoneLow potentialModerate potentialHigh potential
Goshen CountyZone 1None95.3%4.7%
Platte CountyZone 2None69.9%30.1%
Sioux County, NEZone 2None88.0%12.0%
Scotts Bluff County, NEZone 2None100%None
Niobrara CountyZone 1None69.5%30.5%
Banner County, NEZone 2None100%None
Laramie CountyZone 1None93.8%6.2%
Wyoming23 counties, pooled by land areaVariesNone27.6%72.4%

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

Local help

Goshen County, Local resources

Radon testing and mitigation in Goshen County

What it means

Goshen County, Questions

Questions about radon in Goshen County

Are radon levels high in Goshen County?

Over the 2008 to 2017 laboratory totals, 41.7% of the radon tests reported to CDC for Goshen County, Wyoming were at or above 4 pCi/L, and the median reported pre-mitigation result was 3.3 pCi/L. Of 22 Wyoming counties with 30 or more tests for the same period, 14 reported a higher share; pooled, the state comes to 44.3%.

Which counties border Goshen County?

Goshen County borders 6 counties: Platte County, WY, Sioux County, NE, Scotts Bluff County, NE, Niobrara County, WY, Banner County, NE and Laramie County, WY.

Products

Goshen County, Products

Testing a home in Goshen County

In Goshen County, 41.7% of 168 tests reported to CDC over the 2008 to 2017 laboratory totals reached 4 pCi/L, against 44.3% pooled across Wyoming. In Zone 1 the year-round level in Goshen 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

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

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Goshen County, Bordering counties

Counties bordering Goshen County

Calculated by Radon411

Goshen County, Cities and towns

Cities and towns in Goshen County

The Census Bureau estimates 12,640 residents in Goshen County for July 1, 2025, 120 more than in 2020 (+1.0%). Spread over its land, that is 5.7 people to the square mile. Its largest town, Torrington, has 6,205 residents, 49.1% of the total. Together its 5 incorporated places hold 58.1% of those residents; the other 41.9% live outside any of them. CDC's 168 reported tests for 2008 to 2017 work out to 13.3 per 1,000 residents (2025 estimate), close to Wyoming's 13.0.

From Torrington to Yoder, CDC publishes no figure by town: each reads Goshen County's.

The cities and towns in Goshen County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Torrington6,205+1.1%49.1%
Lingle398Level3.1%
LaGrange382+1.9%3.0%
Fort Laramie224+6.7%1.8%
Yoder133+3.1%1.1%

5 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).

Goshen County, Homes

Homes in Goshen County

Goshen County is a place of houses on their own lots: 75% of its 5,860 homes are detached single-family houses, against 68% across Wyoming. The homes are older than Wyoming's as a whole: half were built before 1972 (1980 for Wyoming), and 37% date from before 1960. 74% of occupied homes are lived in by their owner (Wyoming: 72%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Goshen County, Wyoming, 2019 to 2023
HomesGoshen CountyWyoming
Housing units5,860275,131
Detached houses75%68%
In buildings of 5 or more7%9%
Mobile homes11%12%
Built before 196037%24%
Built since 200017%24%
Middle year built19721980
Owner-occupied74%72%

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