
Short-term kit![]()
Air Chek Short-Term radon test kit you hang, lab fee included
- Lab fee included
In home: 72 to 168 hours
Locations and reports
EPA puts Lincoln County in Zone 2, its middle radon zone, and only 22 radon tests from it are on file with CDC (2008 to 2017, laboratory totals). Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Share at 4+ pCi/L
19.4%
10.3 pts below NM
36 tests, 2005 to 2014
Median result
1.9pCi/L
Below action level
Midpoint of the tests, 2005 to 2014
Tests reported
36
11th of 13 by tests
Reported to CDC before any fix, 2005 to 2014
EPA radon zone
Zone 2
Moderate potential
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Rank in New Mexico
9 of 13
Middle half
By share, of 13 with 30+ tests
Read a result for Lincoln County
EPA’s own thresholds; the figures are the area’s, never this home’s.
EPA’s reading of 1.9 pCi/L
Below 2 pCi/L
This result is below 2 pCi/L, the level at which EPA says a fix should be considered. Lincoln County's median reported result, 2005 to 2014.
The data
Lincoln County, At a glance
Predicted: EPA radon zone
Lincoln County is a
USGS geologic potential: Moderate across 94% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
CDC holds 22 reported tests for Lincoln County over the 2008 to 2017 laboratory totals, with a median of 1.9 pCi/L: too few to describe a county (Radon411 reads a share from 30 tests up). Lincoln County beside the counties around it is how this page reads it.
Only 22 tests were reported to CDC for Lincoln County over 2008 to 2017 (laboratory totals), and tests are often run on homes being sold or already suspected of a problem: so few describe neither the county nor this house.
Measured: CDC tracking data. Figure above: 2008 to 2017, laboratory. Measured data period: 2005 to 2017 (every CDC figure on file).
Lincoln County, Compared
Lincoln County's 36 reported tests over the 2005 to 2014 laboratory totals had a middle value of 1.9 pCi/L and a maximum of 9.3 pCi/L, and 19.4% reached 4 pCi/L. New Mexico as a whole (30 New Mexico counties, pooled) comes to 29.7%: 10.3 points higher than here.
The newest figure, over the 2008 to 2017 laboratory totals, counts only 22 tests (27.3% at or above 4 pCi/L), too few to compare, so this reading uses the 36-test figure.
Among its state's counties it ranks 9th of 13 New Mexico counties with 30 or more tests for the same period. Statewide for the same period, Taos County reported the highest share (69.2%) and Otero County the lowest (11.3%).
Below the action level, 20 tests (55.6%) came in under 2 pCi/L, against 38.8% statewide, and 9 tests (25.0%) fell between 2 and 4, against 31.4% statewide. CDC's ten-year totals for Lincoln County went from 36 tests (2005 to 2014) to 22 (2008 to 2017), the share going from 19.4% to 27.3%.
EPA's 1993 zone map puts Lincoln County in Zone 2, a predicted county average between 2 and 4 pCi/L. USGS geology rates 94% of the county's land moderate radon potential.
Otero County, the one bordering county with a figure for the same period, reported 11.3%.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Lincoln County, Geology
Most of the ground under Lincoln County is one class on USGS's geologic map: 94.0% of its land is moderate radon potential, with 6.0% high. The map puts 70.6% of Lincoln County in the area it calls Basin and Range Sacramento Section and 21.9% in Basin and Range, with 2 smaller areas beside them. USGS gives both a radon index of 10, in the moderate band (9 to 11).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Basin and Range Sacramento Section | Paleozoic marine limestones and shales. | Moderate | 10 | 70.6% |
| Basin and Range | Tertiary volcanic and Cretaceous sedimentary rocks. | Moderate | 10 | 21.9% |
| Rocky Mountains (southern extension) | Sandstone, siltstone, shale, volcanic sediments, and valley-fill alluvium. | High | 12 | 6.0% |
| Great Plains Pecos Valley Section | Triassic sandstone, siltstone, mudstone, Quaternary alluvial and eolian sand and silt. | Moderate | 9 | 1.5% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
New Mexico as a whole has more high-potential ground than Lincoln County: 19.2% of its land, against 6.0% here. Of the 7 counties that border it, 4 have more high-potential ground, Sierra County the most at 50.4%.
The map rates the ground, not the air in any home.
Local help
Lincoln County, Local resources
The New Mexico Environment Department seasonally distributes free radon testing kits to the public on a first-come, first-served basis.
There is not currently a certification program within the state.
What it means
Lincoln County, Questions
Over the 2008 to 2017 laboratory totals, 27.3% of the radon tests reported to CDC for Lincoln County, New Mexico were at or above 4 pCi/L, and the median reported pre-mitigation result was 1.9 pCi/L. Of 13 New Mexico counties with 30 or more tests for the same period, 8 reported a higher share; pooled, the state comes to 29.7%.
Lincoln County borders 7 counties: Torrance County, Otero County, Chaves County, De Baca County, Socorro County, Guadalupe County and Sierra County.
Products
Lincoln County, Products
In Lincoln County, 19.4% of 36 tests reported to CDC over the 2005 to 2014 laboratory totals reached 4 pCi/L, against 29.7% pooled across New Mexico. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Lincoln County; a long-term test tells the year-round average.
Test kits and monitors: 1 of 3
Explore
Lincoln County, Bordering counties
44.0%at or above 4 pCi/L
Median 3.4 pCi/L · 25 tests · 24.6 points above Lincoln County
11.3%at or above 4 pCi/L
Median 1.0 pCi/L · 53 tests · 8.1 points below Lincoln County
7.7%at or above 4 pCi/L
Median 0.8 pCi/L · 13 tests · 11.7 points below Lincoln County
0.0%at or above 4 pCi/L
Median 0.8 pCi/L · 8 tests · 19.4 points below Lincoln County
0.0%at or above 4 pCi/L
Median 1.4 pCi/L · 7 tests · 19.4 points below Lincoln County
No CDC figure for 2005 to 2014; its page reads it against its own neighbours.
No CDC figure for 2005 to 2014; its page reads it against its own neighbours.
Lincoln County, Cities and towns
About 19,844 people live in Lincoln County by the Census Bureau's estimate for July 1, 2025, 464 fewer than in 2020 (−2.3%). Spread over its land, that is 4.1 people to the square mile. Its largest town, Ruidoso, has 7,580 residents, 38.2% of the total. Together its 5 incorporated places hold 63.8% of those residents; the other 36.2% live outside any of them. CDC's 36 reported tests for 2005 to 2014 work out to 1.8 per 1,000 residents (2025 estimate), close to New Mexico's 2.2.
From Ruidoso to Corona, CDC publishes no figure by town: each reads Lincoln County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Ruidoso | 7,580 | −1.5% | 38.2% |
| Ruidoso Downs | 2,588 | −2.6% | 13.0% |
| Capitan | 1,402 | +0.1% | 7.1% |
| Carrizozo | 959 | −2.2% | 4.8% |
| Corona | 128 | −1.5% | 0.6% |
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).
Lincoln County, Homes
Of Lincoln County's 17,768 homes, 64% are detached houses, against 65% across New Mexico; 26% are mobile homes. Half of its homes were built before 1985, close to New Mexico's 1984: 11% date from before 1960 and 26% from 2000 or later. Owners live in 80% of the occupied homes (New Mexico: 69%), so for most households a test and a fix are their own to order.
| Homes | Lincoln County | New Mexico |
|---|---|---|
| Housing units | 17,768 | 949,524 |
| Detached houses | 64% | 65% |
| In buildings of 5 or more | 4% | 10% |
| Mobile homes | 26% | 16% |
| Built before 1960 | 11% | 17% |
| Built since 2000 | 26% | 24% |
| Middle year built | 1985 | 1984 |
| Owner-occupied | 80% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.