Anoka County, MN Radon Zone Data

Anoka County, MN: EPA's radon zone, explained

EPA places Anoka 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. Anoka County sits at the 64th percentile nationally for radon potential — above 64 of every 100 rated counties.

Anoka County by the numbers

Anoka County, Minnesota is home to about 376,840 people across 421.974 square miles. Averaged across its land area, Anoka County runs about 893 people per square mile. By population, Anoka County is the 67th largest of every county sharing its EPA zone — the 94th percentile by population within that zone. EPA's geology-based Region 5 groups Anoka County with 523 other counties nationally sharing its underlying rock and soil profile.

Why the zone isn't the answer by itself

Anoka 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. A county-wide moderate average, like Anoka County's, can still hide a specific house well above or below it — testing is what actually answers the question.

If Anoka County tests above the action level

For a Anoka 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 Minnesota's state radon program

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

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