{"@context":"https://schema.org","@type":"Dataset","@id":"https://zipradar.org/topic/flood-zone/63101/","name":"Flood zone for ZIP 63101 — St. Louis, MO","description":"Flood zone data for ZIP 63101 (St. Louis, Missouri), sourced from FEMA NFHL.","topic":{"slug":"flood-zone","label":"Flood zone","source":"FEMA NFHL","sourceUrl":"https://www.fema.gov/flood-maps/national-flood-hazard-layer","refreshCadence":"Quarterly LOMA updates","summary":"Not on zipradar yet. The plan is the FEMA flood zone code, what it means in plain English, and the base flood elevation where assigned. Until then, look the address up on FEMA's Flood Map Service Center.","limitations":"For an official flood-zone determination (required by lenders), consult the FEMA Map Service Center directly. zipradar shows informational classifications only."},"place":{"zip":"63101","city":"St. Louis","state":"MO","stateFull":"Missouri","county":"St. Louis (city)","countySlug":"st-louis","geo":{"latitude":38.6284,"longitude":-90.188}},"stateContext":{"topConcern":"Radon, flooding (Missouri/Mississippi), tornadoes","narrative":"Missouri has Zone 1 radon across most of the state. Major river FEMA AE zones along the Missouri + Mississippi affect St. Louis, Hannibal, Cape Girardeau. Tornado risk peaks April-May."},"radonZone":null,"airQuality":null,"waterQuality":null,"datePublished":"2026-04-24","dateModified":"2026-09-24","canonicalUrl":"https://zipradar.org/topic/flood-zone/63101/","zipDashboardUrl":"https://zipradar.org/zip/63101/","zipDashboardApiUrl":"https://zipradar.org/api/zip/63101/","primarySourceUrl":"https://www.fema.gov/flood-maps/national-flood-hazard-layer","license":{"content":"CC-BY-4.0","attribution":"zipradar.org — https://zipradar.org/topic/flood-zone/63101/"}}