Population and Lung Cancer Total Population: 12,723,071

Lung Cancer Deaths:
5,735

Age-Adjusted Lung Cancer Incidence Rate
(per 100,000) 59

Lung Cancer Cases

9,356

Radon-Induced Lung Cancer Cases

1,476

* Medical Costs (hospital, medicine, doctors)

$297,000,000

* Economic Costs (lost wages / productivity)

$311,000,000

Buildings and Exposure Potential

Pre-Mitigation Radon Tests: 108,909

Percent by Radon Level

< 2 pCi/L

≥ 2 to < 4 pCi/L

≥ 4 pCi/L

Housing Units by Structure Type

	1 to 4 Units	5 or More Units	Total
Existing	4,237,533	1,121,167	5,358,700
New	10,070	10,454	20,524

Public Schools: 4,350

EPA and ANSI-AARST Radon Measurement Standards recommend fixing a building with a radon level ≥ (above or equal to) 4 pCi/L and consider fixing it if any radon level is ≥ 2 and < (below) 4 pCi/L.

Statewide Radon Policies
Credential Required		State License
Radon Standards in Effect		IL Regulations

Homebuyer Protection Required		Notification & Disclosure
Radon System Requirement for New Homes		All Counties
Type of New Home Where Required		All Residential
Standard/Code for Radon System in New Homes		IRC Appendix F modified
School Testing Required		Recommended
Radon System Requirement for New Schools		Recommended

Total Population; Lung Cancer Deaths; Age-Adjusted Lung Cancer Rate (per 100,000); Lung Cancer Deaths: CDC US Cancer Statistics (2018). Estimated Radon-Induced Lung Cancer Cases: Lung Cancer Cases weighted by scaled mean radon levels, CDC Environmental Public Health Tracking Network (2008-2017). National Cancer Institute, Cancer Trends Progress Report (2022) and Productivity Costs of Cancer Mortality in the US (2008). Statewide Radon Policies: IEA staff compilation, 2024. Pre-Mitigation Radon Tests from Labs: CDC Environmental Public Health Tracking Network (2008-2017). Existing Housing Units and New Housing Units: US Census (2019). Public Schools: National Center for Educational Statistics (2020-2021).