Dakota County, NE radon potential

EPA's own radon map rates Dakota County zone 1 - highest potential, predicting a county-wide average indoor level above 4 pCi/L. Nationally that's the 82nd percentile for radon potential — Dakota County outranks 82% of every county EPA has rated.

How Dakota County compares

Dakota County, Nebraska is home to about 21,335 people across 264.431 square miles. That works out to roughly 81 people per square mile. Within its own EPA zone, Dakota County is bigger by population than 48% of the counties that share it. EPA's geology-based Region 7 groups Dakota County with 411 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Dakota County

Where the national indoor average runs about 1.3 pCi/L, Dakota County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. A Zone 1 rating means testing is worth doing sooner rather than later, but it is still county-wide average, not a reading for any single house — some homes in Dakota County will test well under the action level, and EPA's guidance is to test regardless of zone.

Testing and mitigation in Dakota 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 Nebraska's state radon program

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

Where Dakota County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. Whatever zone Dakota County carries, the zone explainer covers what it does and doesn't tell you about any one house.