Lincoln County, OK radon potential

EPA places Lincoln County in Zone 3 - Low Potential — a predicted county-wide average indoor radon level below 2 pCi/L, based on the geology, soil and aerial radioactivity data behind EPA's national map. Lincoln County sits at the 19th percentile nationally for radon potential — above 19 of every 100 rated counties.

Lincoln County by the numbers

Lincoln County, Oklahoma is home to about 34,972 people across 952.372 square miles. That works out to roughly 37 people per square mile. Within its own EPA zone, Lincoln County is bigger by population than 57% of the counties that share it. Geologically, Lincoln County is grouped into EPA Region 6 alongside 502 other counties that share its rock and soil setting.

Zone vs. an actual test

Lincoln County's Zone 3 prediction undercuts the roughly 1.3 pCi/L most US homes average, nowhere near EPA's 4 pCi/L threshold for recommending mitigation. Even at Zone 3, Lincoln County homes are not guaranteed a low reading — zone is a county-wide average, and EPA recommends testing every home regardless of zone.

Next steps for a home in Lincoln County

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Oklahoma's state radon program

For Lincoln County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Lincoln 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 Lincoln County's figures come from

Lincoln County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.