Oregon, IL Radon Levels

Q: What EPA Radon Zone is Oregon in?

Oregon is in Ogle County, EPA Zone 1.

Q: Why are radon readings shown from areas near Oregon?

No homeowner radon tests have been submitted for Oregon yet, so readings from the closest cities and the Ogle County average are used as the best available indicator of local conditions. The EPA recommends testing every individual home.

Q: How much does radon mitigation cost in Oregon?

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

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

Oregon, IL Radon Facts

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

County Ogle County, IL

Zip Code 61061

Situated in Ogle County in northwestern Illinois, Oregon lies within EPA zone 1 where glacial till deposits create ideal conditions for radon production and accumulation. The area's housing stock in zip code 61061 includes historic homes and newer construction, many with full basements typical of northern Illinois communities. Testing data for Oregon remains limited, making individual home testing crucial for residents to assess their specific radon exposure levels.

9.00

pCi/L area average

Above EPA Action Level

Ogle County average: 9.00 pCi/L, based on 5 user-submitted tests across 4 cities in the county. No homeowner readings have been submitted for Oregon 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+

Oregon, IL 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 Oregon, IL

No homeowner tests have been submitted for Oregon 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
Mount Morris	5.3 mi	4.00 pCi/L	1
Byron	9.2 mi	11.50 pCi/L	2
Stillman Valley	10.9 mi	5.00 pCi/L	1
Ashton	12.2 mi	4.00 pCi/L	1
Dixon	13.4 mi	14.00 pCi/L	2
Rochelle	15.1 mi	13.00 pCi/L	1
Pecatonica	20.4 mi	11.00 pCi/L	1
Amboy	21.1 mi	5.00 pCi/L	1

Ogle County Radon Profile

Because of its underlying geology, Ogle 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 Ogle County average 9.00 pCi/L across 5 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 Ogle County home regardless of zone or a neighbor's results.

Radon FAQ for Oregon, IL

What EPA Radon Zone is Oregon in?

Oregon and the 61061 zip code are in Ogle 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 Oregon?

No homeowner radon tests have been submitted for Oregon yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Ogle County average—are the best available indicator of local conditions until Oregon 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 Oregon?

Radon mitigation in Oregon 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 Oregon?

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.