Radon in Nicollet County
Very high radon riskOver 2014-2023, 54.8% of Nicollet County homes tested came back at or above the 4 pCi/L action level, above the statewide figure of 35.9%. The median test result here was 4.8 pCi/L over 2010–2020 (statewide median: 3.1 pCi/L). About 196 Nicollet County properties were tested per year over that period. More than half of the homes tested in this county came back at or above the 4 pCi/L action level.
| Tests at or above 2 pCi/L (2014-2023) | 78.2% (1,618 properties) |
| Tests at or above 4 pCi/L (2014-2023) | 54.8% (1,134 properties) |
| Median result (2010–2020) | 4.8 pCi/L |
| Average result (2010–2020) | 6.1 pCi/L |
| 95th percentile (2010–2020) | 16.6 pCi/L |
| Testing rate (2010–2020) | 145.1 per 10,000 properties per year |
Source: Minnesota Department of Health radon test data, last checked July 8, 2026. County numbers describe homes that happened to be tested, not yours; only a test can tell you your home's level.
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