Bosque County, TX: EPA's radon zone, explained

EPA's own radon map rates Bosque County zone 3 - low potential, predicting a county-wide average indoor level below 2 pCi/L. Nationally that's the 12th percentile for radon potential — Bosque County outranks 12% of every county EPA has rated.

How Bosque County compares

Bosque County, Texas is home to about 19,013 people across 982.976 square miles. Population density there runs about 19 people per square mile. By population, Bosque County is the 643rd largest of every county sharing its EPA zone — the 38th percentile by population within that zone. EPA's geology-based Region 6 groups Bosque County with 502 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

At Zone 3, Bosque County's predicted county average is under the national indoor average (~1.3 pCi/L) and well below EPA's 4 pCi/L action level — outdoor air nationally runs about 0.4 pCi/L for comparison. A Zone 3 label describes Bosque County's average, not any one basement or slab in it — testing is still the only way an individual homeowner actually finds out.

Next steps for a home in Bosque County

For a Bosque County homeowner, the order is simple: test first, since a kit costs a small fraction of what mitigation would. Only if the result clears 4 pCi/L does a system — typically $800–$2,500, about $1,200 for a common install — become worth pricing out.

Find Texas's state radon program

For Bosque County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Bosque County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Use code RADONZONE-10OFF at checkout for 10% off.

Where Bosque County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.