What EPA's radon map says about Dade County

Dade County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Nationally that's the 11th percentile for radon potential — Dade County outranks 11% of every county EPA has rated.

Dade County by the numbers

About 16,068 people live in Dade County, Georgia, spread over 174.076 square miles. Population density there runs about 92 people per square mile. Among counties sharing Dade County's EPA zone, it outranks 33% of them by population. EPA's geology-based Region 4 groups Dade County with 735 other counties nationally sharing its underlying rock and soil profile.

Zone vs. an actual test

Dade 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. Don't read Zone 3 as a pass for Dade County — EPA's guidance to test every home makes no exception for counties predicted low.

Next steps for a home in Dade County

Mitigation cost doesn't depend on Dade 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 Georgia's state radon program

Dade County's test kit answers today; a Airthings radon monitor keeps answering for Dade 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

Dade County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. Whatever zone Dade County carries, the zone explainer covers what it does and doesn't tell you about any one house.