Gage County, NE: EPA's radon zone, explained

Gage County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Gage County sits at the 83rd percentile nationally for radon potential — above 83 of every 100 rated counties.

Gage County by the numbers

Gage County, Nebraska is home to about 21,687 people across 851.468 square miles. Averaged across its land area, Gage County runs about 25 people per square mile. By population, Gage County is the 545th largest of every county sharing its EPA zone — the 49th percentile by population within that zone. Geologically, Gage County is grouped into EPA Region 7 alongside 411 other counties that share its rock and soil setting.

What this actually means for a house in Gage County

Fixing a home becomes an EPA recommendation past 4 pCi/L, and that is precisely the side of the line Gage County's Zone 1 prediction lands on, well above the roughly 1.3 pCi/L most US homes average. EPA's guidance doesn't change because of a Zone 1 label: test the house. What changes is the reason to not put it off in Gage County specifically.

Testing and mitigation in Gage County

For a Gage 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 Nebraska's state radon program

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

Where Gage County's figures come from

The methodology guide shows exactly which EPA and Census sources feed Gage County's numbers. Whatever zone Gage County carries, the zone explainer covers what it does and doesn't tell you about any one house.