Hillsboro, MO Radon Mitigation and Testing

Q: What EPA Radon Zone is Hillsboro in?

Hillsboro is in Jefferson County, EPA Zone 2.

Q: How much does radon mitigation cost in Hillsboro?

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

Jefferson County

EPA Zone 2

Located in Jefferson County within the St. Louis Metro area, Hillsboro sits over Mississippian limestone and dolomite bedrock that can contribute to radon accumulation throughout the region. The community in zip code 63050 features a mix of older rural homes and newer suburban development, many with full basements typical of Missouri construction. Testing data remains limited, making baseline radon measurement advisable for area homeowners.

Hillsboro, MO Radon Mitigation

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

Hillsboro, MO Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Hillsboro Radon Facts

Key details about the radon risk profile for Hillsboro and the 63050 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Jefferson County, MO

Zip Code

63050

Predicted Screening Level

2–4 pCi/L (Zone 2)

Hillsboro and the 63050 zip code are located in Jefferson County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Hillsboro, MO

What EPA Radon Zone is Hillsboro in?

Hillsboro and the 63050 zip code are in Jefferson County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Hillsboro?

Radon mitigation in Hillsboro 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 Hillsboro?

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.

Most Active Radon Markets in Missouri

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Troy	8.50 pCi/L	4
Lees Summit	7.00 pCi/L	3
Columbia	3.00 pCi/L	2
House Springs	7.00 pCi/L	1
Kansas City	7.00 pCi/L	1
Springfield	7.00 pCi/L	1
Independence	5.00 pCi/L	1
Wentzville	No submissions	0