
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 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
Share at 4+ pCi/L, 128 tests, 2007 to 2016
Ground above low
None
27.3 pts below Texas
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 highest, 3 lowest
EPA predicts under 2 pCi/L indoors
Read a result for Fisher County
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
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
Predicted: EPA radon zone
USGS geologic potential: Low across 100% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
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.
Fisher County, Compared
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.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Fisher County, Geology
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).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Central Texas | Cretaceous through Quaternary marine sandstone, shale, chalk, limestone, siltstone, clay, and lignite. | Low | 7 | 100% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
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%.
The map rates the ground, not the air in any home.
Local help
Fisher County, Local resources
The Texas Radon Group offers free radon test kits for Texas individuals who qualify.
There are no radon certification requirements for the State of Texas at this time, but the National Radon Proficiency Program lists radon testers and mitigators within Texas that have passed a rigorous national certification program.
What it means
Fisher County, Questions
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%.
Fisher County borders 7 counties: Scurry County, Nolan County, Jones County, Stonewall County, Kent County, Mitchell County and Taylor County.
Products
Fisher County, Products
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 monitors: 1 of 3
Explore
Fisher County, Bordering counties
100.0%at or above 4 pCi/L
Median 11.1 pCi/L · 1 test
11.1%at or above 4 pCi/L
Median 0.6 pCi/L · 18 tests
0.0%at or above 4 pCi/L
Median 0.9 pCi/L · 3 tests
0.0%at or above 4 pCi/L
Median 0.7 pCi/L · 1 test
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
No CDC figure for 2007 to 2016; its page reads it against its own neighbours.
Fisher County, Cities and towns
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.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Hamlinextends beyond Fisher County | 1,876 | +2.9% | Counted whole |
| Rotan | 1,333 | −0.1% | 36.1% |
| Roby | 589 | Level | 16.0% |
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
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 | Fisher County | Texas |
|---|---|---|
| Housing units | 2,041 | 11,890,808 |
| Detached houses | 85% | 65% |
| In buildings of 5 or more | 1% | 21% |
| Mobile homes | 10% | 7% |
| Built before 1960 | 47% | 13% |
| Built since 2000 | 11% | 37% |
| Middle year built | 1962 | 1990 |
| Owner-occupied | 82% | 63% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.