Radon Levels In the St. Louis Metro East


A recent study found that 42% of the homes tested in Illinois have elevated radon levels. The Missouri State Radon office states that approximately 1/3 of all homes in the St. Louis Metro area are at risk of dangerous radon levels. Radon is no joke and may be in any house, old or new, with or without basements.‚Äč

Radon By Zip Code



Zip CodeTotal Homes TestedNumber Homes over 4.0 pCi/lPercentage Over 4.0 pCi/l
TOTALS107534231.8%
620025240%
62025752229.3%
6203438615.8%
620357342.9%
6206219526.3%
6209510-
6220211-
6220640-
6220710-
62208381436.8%
6222029931.0%
622211345843.3%
62223371540.5%
62226762328.9%
622327114.3
6223434926.5%
62236441431.8%
6204020-
6224362-33.3%
6224924416.7%
6225422418.2%
62258211152.4%
6226010330%
6226522-
6226935210229%
6228520630%
62294361541.7%
622953266.7%
62298321038.5%
TOTALS107534231.8%


The chart is a compilation of data from test I have performed along with data available on www.state.il.us/iema/radon/radon.htm


Chart Last Updated: October 28, 2010