Skip to content
RADON411

Locations and reports

Radon Levels in Albany County, Wyoming

EPA puts Albany County in Zone 1, its highest radon zone, and 27.9% of its 394 reported radon tests (2008 to 2017, laboratory totals) 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

    27.9%

    16.4 pts below WY

    Albany
    27.9%
    Wyoming
    44.3%

    394 tests, 2008 to 2017

  • Median result

    2.7pCi/L

    Below action level

    Albany
    2.7 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2008 to 2017

  • Tests reported

    394

    7th of 22 by tests

    Albany
    394
    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

    19 of 22

    Lowest quarter

    Albany
    27.9%
    Sheridan
    69.5%

    By share, of 22 with 30+ tests

Read a result for Albany County

Starts at Albany County's median, 2.7 pCi/L

2.7pCi/L

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

EPA’s reading of 2.7 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. Albany County's median reported result, 2008 to 2017.

Interpret this readingWhat a fix costs

The data

Albany County, At a glance

Albany County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Albany 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 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

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

Reported results by concentration band, Albany County, 2008 to 2017, laboratory
Under 2 pCi/L: 30%2 to 4 pCi/L: 42%4 pCi/L and above: 28%

Of 394 pre-mitigation tests reported to CDC, not homes in this area.

Reported results by concentration band, Albany County, 2008 to 2017, laboratory: data table
Result bandTests MeasuredShare Measured
Under 2 pCi/L11729.7%
2 to 4 pCi/L16742.4%
4 pCi/L and above11027.9%
What these figures count

These are the 394 tests reported to CDC for Albany 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

Albany County, Compared

Albany County radon figures, compared

Calculated by Radon411

Albany County's 394 reported tests over the 2008 to 2017 laboratory totals had a middle value of 2.7 pCi/L and a maximum of 31.9 pCi/L, and 27.9% reached 4 pCi/L. Wyoming as a whole (23 Wyoming counties, pooled) comes to 44.3%: 16.4 points higher than here.

Among its state's counties it ranks 19th of 22 Wyoming counties with 30 or more tests for the same period. Statewide for the same period, Sheridan County reported the highest share (69.5%) and Uinta County the lowest (24.6%).

Below the action level, 117 tests (29.7%) came in under 2 pCi/L, against 25.5% statewide, and 167 tests (42.4%) fell between 2 and 4, against 30.2% statewide. CDC's ten-year totals for Albany County went from 385 tests (2005 to 2014) to 394 (2008 to 2017), the share going from 28.3% to 27.9%.

EPA's 1993 zone map puts Albany County in Zone 1, a predicted county average above 4 pCi/L. USGS geology rates 100% of the county's land high radon potential.

Next door, the shares run from 25.5% in Laramie County to 62.3% in Converse County, with Platte County and Laramie County below Albany County.

CDC also counts 6 tests taken after mitigation in Albany County for the same period: tests in homes where a fix was already in.

Albany County against Wyoming, the United States and nearby counties, 2008 to 2017, laboratory
AreaTestsAt or above 4 pCi/LMedianDifference from Albany County
Albany County39427.9%2.7 pCi/LThis county
Wyoming, pooled23 counties, pooled7,63844.3%Not pooled+16.4 points
United States, pooled2,661 counties, pooled2,013,54435.7%Not pooled+7.8 points
Sheridan Countyhighest in the state84669.5%5.8 pCi/L+41.6 points
Uinta Countylowest in the state19924.6%2.2 pCi/L−3.3 points
Jackson County, COborders it580.0%24.8 pCi/L+52.1 points
Converse County, WYborders it13062.3%4.8 pCi/L+34.4 points
Larimer County, COborders it9,32557.9%5.0 pCi/L+30.0 points
Carbon County, WYborders it8041.3%3.0 pCi/L+13.4 points
Platte County, WYborders it13226.5%2.4 pCi/L−1.4 points
Laramie County, WYborders it1,83425.5%2.5 pCi/L−2.4 points
Where Albany County's reported results fell, 2008 to 2017, laboratory, beside Wyoming and the United States
ResultAlbany County testsAlbany County shareWyoming shareU.S. shareAgainst Wyoming
Under 2 pCi/L11729.7%25.5%39.6%+4.2 points
2 to 4 pCi/L16742.4%30.2%24.7%+12.2 points
4 pCi/L and above11027.9%44.3%35.7%−16.4 points
Albany 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
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
Laramie County21 of 221,83425.5%2.5 pCi/L
Uinta County22 of 2219924.6%2.2 pCi/L
Albany County ten-year laboratory totals, against Wyoming's pooled share
PeriodTestsAt or above 4 pCi/LMedianHighestWyoming, pooledChange from the row before
2008 to 201739427.9%2.7 pCi/L31.9 pCi/L44.3%−0.8 points
2007 to 201638728.7%2.7 pCi/L31.9 pCi/L44.6%−1.0 points
2006 to 201537729.7%2.7 pCi/L31.9 pCi/L45.3%+1.4 points
2005 to 201438528.3%2.7 pCi/L31.9 pCi/L45.5%First on file

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

Albany County, Geology

The ground under Albany County

Predicted

Most of the ground under Albany County is one class on USGS's geologic map: 99.7% of its land is high radon potential, with 0.3% moderate. The map puts 55.3% of Albany County in the area it calls Wind River Basin and 44.2% in Laramie Mountains. USGS gives both a radon index of 12, in the high band (12 to 17).

USGS's geologic areas under Albany County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Wind River BasinCretaceous and Tertiary uranium-bearing marginal-marine and fluvial sandstones.High1255.3%
Laramie MountainsPrecambrian anorthosite, monzonite, gneissic granite, and granite.High1244.2%

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

Albany County beside the ground around it

Albany County has more high-potential ground than Wyoming as a whole: 99.7% of its land against 72.4%. Of the 6 counties that border it, 1 has more high-potential ground, Jackson County, CO the most at 100%.

Share of land by USGS radon potential: Albany County, the 6 counties bordering it and Wyoming
AreaEPA zoneLow potentialModerate potentialHigh potential
Albany CountyZone 1None0.3%99.7%
Platte CountyZone 2None69.9%30.1%
Carbon CountyZone 1None29.2%70.8%
Laramie CountyZone 1None93.8%6.2%
Larimer County, COZone 1None1.6%98.4%
Converse CountyZone 1None12.5%87.5%
Jackson County, COZone 1NoneNone100%
Wyoming23 counties, pooled by land areaVariesNone27.6%72.4%

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

Local help

Albany County, Local resources

Radon testing and mitigation in Albany County

What it means

Albany County, Questions

Questions about radon in Albany County

Are radon levels high in Albany County?

Over the 2008 to 2017 laboratory totals, 27.9% of the radon tests reported to CDC for Albany County, Wyoming were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.7 pCi/L. Of 22 Wyoming counties with 30 or more tests for the same period, 18 reported a higher share; pooled, the state comes to 44.3%.

Which counties border Albany County?

Albany County borders 6 counties: Platte County, WY, Carbon County, WY, Laramie County, WY, Larimer County, CO, Converse County, WY and Jackson County, CO.

Products

Albany County, Products

Testing a home in Albany County

In Albany County, 27.9% of 394 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 Albany 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

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

Explore

Albany County, Bordering counties

Counties bordering Albany County

Calculated by Radon411

Albany County, Cities and towns

Cities and towns in Albany County

The Census Bureau estimates 38,558 residents in Albany County for July 1, 2025, 1,451 more than in 2020 (+3.9%). Spread over its land, that is 9.0 people to the square mile. Laramie alone is home to 32,284 of them, 83.7% of the total. Together its 2 incorporated places hold 84.3% of those residents; the other 15.7% live outside any of them. CDC's 394 reported tests for 2008 to 2017 work out to 10.2 per 1,000 residents (2025 estimate), close to Wyoming's 13.0.

From Laramie to Rock River, CDC publishes no figure by town: each reads Albany County's.

The cities and towns in Albany County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Laramie32,284+2.7%83.7%
Rock River217+1.4%0.6%

2 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).

Albany County, Homes

Homes in Albany County

Fewer than six in ten of Albany County's 18,735 homes are detached houses (51%, against 68% across Wyoming); the rest are attached, in shared buildings or mobile. Half of its homes were built before 1977, close to Wyoming's 1980: 26% date from before 1960 and 22% from 2000 or later. Most occupied homes here are rented: owners live in 49% (Wyoming: 72%). A tenant can run a test; a fix is the landlord's to make.

Homes in Albany County, Wyoming, 2019 to 2023
HomesAlbany CountyWyoming
Housing units18,735275,131
Detached houses51%68%
In buildings of 5 or more18%9%
Mobile homes9%12%
Built before 196026%24%
Built since 200022%24%
Middle year built19771980
Owner-occupied49%72%

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