What EPA's radon map says about Jackson County

EPA places Jackson County in Zone 2 - Moderate Potential — a predicted county-wide average indoor radon level between 2 and 4 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. That puts Jackson County in the 51st percentile nationally for radon potential — higher than 51% of the counties EPA has rated.

Where Jackson County sits nationally

About 32,723 people live in Jackson County, Ohio, spread over 420.31 square miles. Population density there runs about 78 people per square mile. Among counties sharing Jackson County's EPA zone, it outranks 55% of them by population. Geologically, Jackson County is grouped into EPA Region 5 alongside 523 other counties that share its rock and soil setting.

Zone vs. an actual test

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Jackson County's Zone 2 prediction lands in the gap between the two. A Zone 2 rating is a moderate county-wide average, not a guarantee about any one house in Jackson County — testing is the only way to know an individual home's actual level.

Testing and mitigation in Jackson County

Mitigation cost doesn't depend on Jackson 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

Jackson County's test kit answers today; a Airthings radon monitor keeps answering for Jackson 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 Jackson County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.