# 21 O'Fallon Street, St. Louis

Source page: https://checkyourplace.com/address/st-louis/21-o-fallon-street-st-louis

## Facts

- City: St. Louis
- FEMA flood zone: Zone X, outside the high-risk area
- 2026 conforming loan limit: $832,750 (FHFA, St. Louis city)
- EPA radon zone: 2 (moderate potential)
- Sinkhole-prone ground: on karst terrain (USGS)
- Coordinates: 38.63745, -90.18218

Sourced directly from official city and county records.