Independence County, AR: EPA's radon zone, explained

EPA places Independence 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. Independence County sits at the 53rd percentile nationally for radon potential — above 53 of every 100 rated counties.

Independence County by the numbers

Independence County, Arkansas is home to about 38,345 people across 763.712 square miles. Averaged across its land area, Independence County runs about 50 people per square mile. By population, Independence County is the 411th largest of every county sharing its EPA zone — the 60th percentile by population within that zone. Independence 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

Neither at the 4 pCi/L action level nor down at the roughly 1.3 pCi/L national indoor norm, Independence County's Zone 2 prediction lands in the gap between the two. Middle-of-the-pack doesn't mean risk-free for any one Independence County address — a moderate county average still leaves individual homes to test either side of it.

Next steps for a home in Independence County

For a Independence 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 Arkansas's state radon program

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

Where Independence County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Independence County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.