What EPA's radon map says about Citrus County

EPA places Citrus 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. Nationally, Citrus County ranks higher in radon potential than 62% of rated counties (the 62nd percentile).

How Citrus County compares

About 170,174 people live in Citrus County, Florida, spread over 582.031 square miles. Population density there runs about 292 people per square mile. Among counties sharing Citrus County's EPA zone, it outranks 87% of them by population. EPA's geology-based Region 4 groups Citrus County with 735 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Citrus County

Citrus County's predicted average falls between EPA's 4 pCi/L action level and the national indoor average of about 1.3 pCi/L (outdoor air runs roughly 0.4 pCi/L). Citrus County's Zone 2 rating sits in the middle nationally; EPA's guidance is unchanged by that — test every home regardless of its zone.

If Citrus County tests above the action level

Mitigation cost doesn't depend on Citrus 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 Florida's state radon program

Citrus County's test kit answers today; a Airthings radon monitor keeps answering for Citrus 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 Citrus County's numbers. The guide to what a radon zone actually means covers why testing matters in every zone, not just Zone 1.