What EPA's radon map says about Pike County

Pike County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally, Pike County ranks higher in radon potential than 84% of rated counties (the 84th percentile).

Where Pike County sits nationally

About 27,065 people live in Pike County, Ohio, spread over 440.282 square miles. Averaged across its land area, Pike County runs about 61 people per square mile. Among counties sharing Pike County's EPA zone, it outranks 54% of them by population. EPA's geology-based Region 5 groups Pike County with 523 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Pike County carries a Zone 1 label because its predicted average clears 4 pCi/L outright — three-plus times the 0.4 pCi/L typical outdoors and above the 1.3 pCi/L most homes see. Being in Zone 1 raises the odds Pike County homes test above the action level, but it does not mean any specific house does — EPA recommends every home be tested, in every zone, because the only way to know is to test.

If Pike County tests above the action level

Mitigation cost doesn't depend on Pike 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 Ohio's state radon program

Pike County's test kit answers today; a Airthings radon monitor keeps answering for Pike 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

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. Whatever zone Pike County carries, the zone explainer covers what it does and doesn't tell you about any one house.