Minnesota Radon Map, Levels & Testing Guide
Browse the 2 listed county pages surfaced for Minnesota. Open a listed county to compare its EPA zone, source caveats, testing meaning, and when mitigation pricing becomes worth checking.
High Risk
Moderate
Low Risk
Official Evidence in Minnesota
2 of 2 listed counties have official evidence
Open a county page to see the official source context: measurement fields, local burden, state percentile, and the next step for no reading, 2.0-3.9, or 4.0+ pCi/L.
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Measured
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CDC source
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Measured Risk Leaders in Minnesota
County rankings from actual reported radon tests
These lists rank the visible Minnesota county pages by measured radon signals, not by the EPA zone label alone. Use them to spot where the state hub has a real data story before opening individual county pages.
2
measured counties
State-level evidence read
This hub has elevated measured counties, so the map is only the starting point.
The state hub is now doing a decision job: it separates first-click counties, retest counties, and lower-signal counties from 2 visible county measurement rows. 2 counties are elevated or high, including 0 where the EPA zone alone understates the measured signal.
First-click counties
Open Washington County first when you need the strongest local answer. It is tagged Priority test from 31.2% 4.0+ - 3.4 pCi/L primary - 12,936 tests. 2 visible measured counties are elevated or high enough to review before lower-signal counties.
Buyer/seller lane
Buyer/seller lane: start with the elevated or high counties, require a fresh lowest-level test, and turn any 4.0+ property result into quote or credit math. The hub has 2 state-source county rows to support that routing.
Retest lane
Retest lane: 2.0-3.9 pCi/L deserves more caution in the elevated/high county set than in lower-signal counties. The hub should send those users to county pages before product or cost paths.
Best county pages to open first
Start with these local evidence pages
Ranked by measured burden, 4.0+ share, test volume, and whether the EPA zone understates the measurement signal.
Washington County
MN Health
31.2% 4.0+ - 3.4 pCi/L primary - 12,936 tests
Washington County should be opened before lower-signal counties: 31.2% of reported tests at or above 4.0 and 3.4 pCi/L primary result. It is strong enough for testing and retesting language on the hub.
Ramsey County
MN Health
29.4% 4.0+ - 3.1 pCi/L primary - 21,406 tests
Ramsey County should be opened before lower-signal counties: 29.4% of reported tests at or above 4.0 and 3.1 pCi/L primary result. It is strong enough for testing and retesting language on the hub.
Highest 4.0+ share
Highest high-end reading
Measured pattern
Among 2 visible counties with measurement tables, 0 land in the high measured-burden band and 2 land in high or elevated measured-burden bands. That lets this hub rank counties by observed test distribution instead of repeating the EPA map.
Map vs measurements
The strongest measured signals mostly align with the EPA zone structure, so the county pages can use the map as support while still leading with test data.
Source strategy
All measured rows shown here use state-specific official sources, so this hub can make source-backed county comparisons without leaning on a national fallback.
Already Tested
View Minnesota Cost Estimates
If you already have a radon result, skip the directory and move straight to local price guidance.
Understand the Number
2.0 vs 4.0 vs 8.0 pCi/L
Use the parent levels guide if you need the plain-English meaning of a radon result before browsing counties.
Need a Number First
Read the Testing Guide
Use the fastest valid radon test setup before you compare quotes or ask whether mitigation is worth it.
Browse Counties
Jump to the Directory
Open your county to see its EPA zone, testing meaning, and the point where mitigation becomes worth pricing.
Official State Resource
Minnesota radon program and rules
Use the state program link to verify local radon guidance, disclosure language, and contractor credential expectations before you act on an estimate.
Disclosure rule tracked
Minnesota requires radon disclosure at the time of sale. The Minnesota Department of Health provides extensive radon resources for homebuyers and sellers.
State licensing required
Minnesota requires radon mitigation professionals to be licensed by the Minnesota Department of Health.
Already tested? Get your itemized mitigation cost estimate.
View Minnesota Mitigation Cost Estimates ->