Oakland, IL Radon Levels

Q: What EPA Radon Zone is Oakland in?

Oakland is in Coles County, EPA Zone 1.

Q: How much does radon mitigation cost in Oakland?

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

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

Oakland, IL Radon Facts

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

County Coles County, IL

Zip Code 61943

Located in Coles County within central Illinois, Oakland sits on deep glacial moraine deposits over limestone bedrock that contribute to moderate-to-high radon potential across the central Illinois prairie. Limited testing data makes individual home assessment crucial for residents of this small community. The area's mix of historic homes from the early-to-mid 1900s and newer construction typically features full or partial basements where radon can accumulate most readily.

9.00

pCi/L area average

Above EPA Action Level

Coles County average: 9.00 pCi/L, based on 4 user-submitted tests across 2 cities in the county. No homeowner readings have been submitted for Oakland 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+

Oakland, 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 Oakland, IL

No homeowner tests have been submitted for Oakland 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
Charleston	13.9 mi	8.00 pCi/L	1
Tuscola	17.0 mi	17.00 pCi/L	1
Paris	17.6 mi	9.67 pCi/L	3
Mattoon	22.1 mi	9.33 pCi/L	3
Homer	26.7 mi	20.00 pCi/L	1
Urbana	31.6 mi	15.00 pCi/L	1
Champaign	34.6 mi	6.67 pCi/L	3
Monticello	38.7 mi	4.50 pCi/L	2

Coles County Radon Profile

Because of its underlying geology, Coles 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 2 cities in Coles County average 9.00 pCi/L across 4 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 Coles County home regardless of zone or a neighbor's results.

Radon FAQ for Oakland, IL

What EPA Radon Zone is Oakland in?

Oakland and the 61943 zip code are in Coles 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 Oakland?

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

Radon mitigation in Oakland 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 Oakland?

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.