What EPA's radon map says about Creek County

Creek County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Nationally that's the 25th percentile for radon potential — Creek County outranks 25% of every county EPA has rated.

Where Creek County sits nationally

About 73,971 people live in Creek County, Oklahoma, spread over 949.895 square miles. That works out to roughly 78 people per square mile. Among counties sharing Creek County's EPA zone, it outranks 75% of them by population. Creek County falls in EPA Radon Region 6, one of 503 counties nationally EPA assigns to that same geologic province.

Why the zone isn't the answer by itself

Creek County's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. A Zone 3 rating means Creek County's county-wide average is predicted low, but EPA is explicit that a meaningful share of homes in low-potential zones still test above the action level — a low zone is not a reason to skip testing.

If Creek County tests above the action level

Mitigation cost doesn't depend on Creek 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 Oklahoma's state radon program

Creek County's test kit answers today; a Airthings radon monitor keeps answering for Creek 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 Creek County's numbers. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.