What EPA's radon map says about Cherokee County

EPA places Cherokee County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Nationally, Cherokee County ranks higher in radon potential than 23% of rated counties (the 23rd percentile).

Cherokee County by the numbers

About 53,223 people live in Cherokee County, Texas, spread over 1,052.954 square miles. Averaged across its land area, Cherokee County runs about 51 people per square mile. Among counties sharing Cherokee County's EPA zone, it outranks 68% of them by population. EPA's geology-based Region 6 groups Cherokee County with 502 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Cherokee County

Well clear of both the 1.3 pCi/L national indoor average and EPA's 4 pCi/L action level, Cherokee County's Zone 3 prediction is the low end of the scale. Don't read Zone 3 as a pass for Cherokee County — EPA's guidance to test every home makes no exception for counties predicted low.

Testing and mitigation in Cherokee County

Mitigation cost doesn't depend on Cherokee County's zone — it depends on the house's foundation. A typical system runs $800–$2,500 (about $1,200 typical), and testing first is what tells you whether that's needed at all.

Find Texas's state radon program

Cherokee County's test kit answers today; a Airthings radon monitor keeps answering for Cherokee County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

More on how this number was built

The methodology guide shows exactly which EPA and Census sources feed Cherokee County's numbers. Whatever zone Cherokee County carries, the zone explainer covers what it does and doesn't tell you about any one house.