# 1 Lancaster Circle, Naperville

Source page: https://checkyourplace.com/address/naperville/1-lancaster-circle-naperville

## Facts

- City: Naperville
- FEMA flood zone: Zone AE, high risk; flood insurance required by federally backed lenders
- 2026 conforming loan limit: $832,750 (FHFA, DuPage County)
- EPA radon zone: 2 (moderate potential)
- Sinkhole-prone ground: on karst terrain (USGS)
- Coordinates: 41.72921, -88.13392

Sourced directly from official city and county records.