What EPA's radon map says about Keith County

EPA places Keith 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. Keith County sits at the 38th percentile nationally for radon potential — above 38 of every 100 rated counties.

How Keith County compares

About 8,148 people live in Keith County, Nebraska, spread over 1,062.063 square miles. Averaged across its land area, Keith County runs about 8 people per square mile. Among counties sharing Keith County's EPA zone, it outranks 16% of them by population. Keith County falls in EPA Radon Region 7, one of 412 counties nationally EPA assigns to that same geologic province.

What this actually means for a house in Keith County

Keith County's Zone 2 prediction clears the 1.3 pCi/L national indoor average without reaching EPA's own 4 pCi/L point for recommending a fix. Middle-of-the-pack doesn't mean risk-free for any one Keith County address — a moderate county average still leaves individual homes to test either side of it.

Testing and mitigation in Keith County

Mitigation cost doesn't depend on Keith 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 Nebraska's state radon program

Keith County's test kit answers today; a Airthings radon monitor keeps answering for Keith County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

More on how this number was built

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