Randolph, MN Radon Levels

Q: What EPA Radon Zone is Randolph in?

Randolph is in Dakota County, EPA Zone 1.

Q: How much does radon mitigation cost in Randolph?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Randolph radon levels and find certified testing and mitigation professionals to keep your home safe

Randolph, MN Radon Facts

EPA Radon Zone Zone 1 — High Risk > 4.0 pCi/L (Zone 1)

County Dakota County, MN

Zip Code 55065

This Dakota County community in the Minneapolis-St. Paul Metro sits on glacial till deposits that can trap and concentrate radon gas from underlying bedrock. Local homes, primarily built in the post-1950s suburban expansion, feature full basements where radon can accumulate if present. With limited testing data available for zip code 55065, residents should test their homes to establish baseline radon levels.

9.33

pCi/L area average

Above EPA Action Level

Dakota County average: 9.33 pCi/L, based on 6 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Randolph itself yet, so this county figure is the closest available benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Randolph, MN Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Radon Readings Near Randolph, MN

No homeowner tests have been submitted for Randolph yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Northfield	8.7 mi	4.50 pCi/L	2
Farmington	11.5 mi	7.50 pCi/L	2
Hastings	14.9 mi	8.50 pCi/L	2
Elko New Market	15.3 mi	3.00 pCi/L	1
Lakeville	15.5 mi	6.00 pCi/L	1
Faribault	20.6 mi	10.00 pCi/L	2
Cottage Grove	21.3 mi	7.00 pCi/L	2
Savage	22.7 mi	5.00 pCi/L	3

Dakota County Radon Profile

Because of its underlying geology, Dakota County is mapped as EPA Radon Zone 1 — the most elevated classification — where predicted indoor screening averages exceed 4 pCi/L. Homeowner-submitted tests from 4 cities in Dakota County average 9.33 pCi/L across 6 tests — above the EPA's 4 pCi/L action level, reinforcing the need for testing across the county. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Dakota County home regardless of zone or a neighbor's results.

Radon FAQ for Randolph, MN

What EPA Radon Zone is Randolph in?

Randolph and the 55065 zip code are in Dakota County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

Why are radon readings shown from areas near Randolph?

No homeowner radon tests have been submitted for Randolph yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Dakota County average—are the best available indicator of local conditions until Randolph homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Randolph?

Radon mitigation in Randolph typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Randolph?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.