# 1 Illinois Avenue, Sioux City

Source page: https://checkyourplace.com/address/sioux-city/1-illinois-avenue-sioux-city

## Facts

- City: Sioux City
- FEMA flood zone: Zone AH, high risk, base flood elevation 1103 ft; flood insurance required by federally backed lenders
- 2026 conforming loan limit: $832,750 (FHFA, Woodbury County)
- EPA radon zone: 1 (highest potential)
- Coordinates: 42.50905, -96.38929

Sourced directly from official city and county records.