{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/radon/60611/","name":"Radon for ZIP 60611 — Chicago (Streeterville), IL","description":"Radon data for ZIP 60611 (Chicago (Streeterville), Illinois), sourced from EPA Radon Zones.","topic":{"slug":"radon","label":"Radon","source":"EPA Radon Zones","sourceUrl":"https://www.epa.gov/radon/find-information-about-local-radon-zones-and-state-contact-information","refreshCadence":"Static 1993 baseline plus state-level supplementary updates","summary":"Pages show the county zone, what the classification means for home testing recommendations, and state-level supplementary data where available.","limitations":"Radon is a regional indicator. Address-level radon measurement requires an at-home test kit (often free from state health departments)."},"place":{"zip":"60611","city":"Chicago (Streeterville)","state":"IL","stateFull":"Illinois","county":"Cook County","countySlug":"cook-county","geo":{"latitude":41.8954,"longitude":-87.621}},"stateContext":{"topConcern":"Lead service lines, flooding (Mississippi/Illinois)","narrative":"Illinois has the highest LCRR lead-service-line replacement obligations in the US (Chicago alone >400,000 LSLs). FEMA AE coverage extends along the Mississippi, Illinois, and Rock rivers. EPA SDWIS shows urban vs. downstate disparity."},"radonZone":{"zone":2,"label":"Zone 2 — moderate potential","potential":"predicted average indoor radon screening level between 2 and 4 pCi/L","classification":"county-level, 1993 EPA baseline — not an address-level measurement","caveat":"The Map of Radon Zones should not be used to determine if individual homes need to be tested. No matter where you live, test your home for radon — it's easy and inexpensive."},"airQuality":null,"datePublished":"2026-04-24","dateModified":"2026-09-07","canonicalUrl":"https://zipradar.org/topic/radon/60611/","zipDashboardUrl":"https://zipradar.org/zip/60611/","zipDashboardApiUrl":"https://zipradar.org/api/zip/60611/","primarySourceUrl":"https://www.epa.gov/radon/find-information-about-local-radon-zones-and-state-contact-information","license":{"content":"CC-BY-4.0","attribution":"zipradar.org — https://zipradar.org/topic/radon/60611/"}}