
Short-term kit![]()
RA400 short-term liquid scintillation radon test kit, lab fee included
- Lab fee included
Method: Liquid scintillation
In home: 48 to 96 hours
Locations and reports
EPA puts Chickasaw County in Zone 2, its middle radon zone. Homes with elevated levels occur in all three zones, so only a test measures yours.
Data checked By Radon411Methodology
Nearest county
18.6%
Franklin County, 73 miles
Share at 4+ pCi/L, 210 tests, 2006 to 2015
Ground above low
63.3%
55.2 pts above MS
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 2
Moderate potential
1 highest, 3 lowest
EPA predicts 2 to 4 pCi/L indoors
Read a result for Chickasaw 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
Chickasaw County, At a glance
Predicted: EPA radon zone
Chickasaw County is a
USGS geologic potential: Moderate across 63% of the county's area
Predicted: EPA Map of Radon Zones
Measured: tests reported to CDC
CDC has published no radon test figures for Chickasaw County. Franklin County, AL, 73 miles away, is the nearest county with a figure over the 2006 to 2015 laboratory totals.
Chickasaw County, Compared
No Mississippi county, Chickasaw County included, has a radon test figure from CDC; over the 2006 to 2015 laboratory totals, the agency's counts name 2,669 counties in other states. Across every county in the country with a figure (2,669), 36.3% of reported tests reached that level; no Mississippi county contributes to that pool.
The nearest counties with a figure are Franklin County, AL (73 miles away) at 18.6%, Colbert County, AL (85 miles away) at 36.6% and McNairy County, TN (89 miles away) at 8.2%.
EPA's 1993 map puts Chickasaw County in Zone 2, its middle label: a predicted county average between 2 and 4 pCi/L. USGS geology rates 63% of the county's land moderate radon potential.
Pooled shares: Radon411's sum of CDC's county counts for one period.
Chickasaw County, Geology
USGS's geologic map splits Chickasaw County: 63.3% of its land is moderate radon potential and 36.7% low. The map puts 63.3% of Chickasaw County in the area it calls Pontotoc Ridge/Black Prairies and 36.7% in North Central Hills/Flatwoods. USGS gives the first a radon index of 9, in the moderate band (9 to 11), and the second 8, in the low band (5 to 8).
| Area | The rock, in USGS's words | Potential | Radon index | Share of land |
|---|---|---|---|---|
| Pontotoc Ridge/Black Prairies | Glauconitic sand, clay, sandy limestone, micaceous chalk, and lime. | Moderate | 9 | 63.3% |
| North Central Hills/Flatwoods | Tertiary nonmarine to deltaic sediments ranging from sand to clay. | Low | 8 | 36.7% |
Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.
Across Mississippi 0.1% of the land is rated high; none of Chickasaw County's is. Of the 6 counties that border it, 2 have more moderate-potential ground, Lee County the most at 97.6%.
The map rates the ground, not the air in any home.
Local help
Chickasaw County, Local resources
What it means
Chickasaw County, Questions
No CDC testing statistics are published here for Chickasaw County, Mississippi yet. Of the 8 nearest counties with a figure, within 102 miles, the share of tests at or above 4 pCi/L runs from 7.0% to 36.6%.
Chickasaw County borders 6 counties: Clay County, Calhoun County, Pontotoc County, Lee County, Monroe County and Webster County.
Products
Chickasaw County, Products
No CDC figure names Chickasaw County; the nearest county with one, Franklin County, AL (73 miles away), reported 18.6% of its tests at or above 4 pCi/L over the 2006 to 2015 laboratory totals, the only reading nearby until a test of this home. In Zone 2 a short-term kit (2 to 90 days) is the quick first check in Chickasaw County; a long-term test tells the year-round average.
Test kits and monitors: 1 of 3
Explore
Chickasaw County, Bordering counties
counties bordering Chickasaw County: 1 of 6
Chickasaw County, Cities and towns
About 16,730 people live in Chickasaw County by the Census Bureau's estimate for July 1, 2025, 351 fewer than in 2020 (−2.1%). That works out to 33 people per square mile of land. Its largest town, Houston, has 3,670 residents, 21.9% of the total. Together its 4 incorporated places hold 41.0% of those residents; the other 59.0% live outside any of them.
From Houston to Woodland, CDC publishes no figure by town: each reads Chickasaw County's.
| Place | Residents | Since 2020 | Share of residents |
|---|---|---|---|
| Houston | 3,670 | −3.2% | 21.9% |
| Okolona | 2,394 | −4.4% | 14.3% |
| New Houlka | 677 | −2.6% | 4.0% |
| Woodland | 117 | +5.4% | 0.7% |
4 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).
Chickasaw County, Homes
Of Chickasaw County's 7,817 homes, 72% are detached houses, against 69% across Mississippi; 20% are mobile homes. The homes are older than Mississippi's as a whole: half were built before 1978 (1986 for Mississippi), and 16% date from before 1960. 67% of occupied homes are lived in by their owner (Mississippi: 69%); in the rest a tenant can run a test, but a fix is the landlord's to make.
| Homes | Chickasaw County | Mississippi |
|---|---|---|
| Housing units | 7,817 | 1,332,811 |
| Detached houses | 72% | 69% |
| In buildings of 5 or more | 1% | 9% |
| Mobile homes | 20% | 15% |
| Built before 1960 | 16% | 15% |
| Built since 2000 | 18% | 28% |
| Middle year built | 1978 | 1986 |
| Owner-occupied | 67% | 69% |
Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.