Flood Zone Comparison
Compare key metrics between 57716 57716, SD — Zone AE and 62621 62621, IL — Zone AE. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 57716 57716, SD — Zone AE | 62621 62621, IL — Zone AE |
|---|---|---|
| name | 57716 57716, SD — Zone AE | 62621 62621, IL — Zone AE |
| zip code | 57716 | 62621 |
| city | 57716 | 62621 |
| state | South Dakota | Illinois |
| state code | SD | IL |
| category | High Risk | High Risk |
| flood zone | Zone AE (High Risk — 100-Year Floodplain) | Zone AE (High Risk — 100-Year Floodplain) |
| risk level | High Risk | High Risk |
| annual flood prob | 1% annual chance (100-year flood) | 1% annual chance (100-year flood) |
| insurance required | Required for federally-backed mortgages | Required for federally-backed mortgages |
| avg annual premium | 3,249 | 3,249 |
| base flood elevation | 22 ft | 24 ft |
| historical floods | 9 recorded flood events in the past 50 years. Most recent major flood: 2012 | 10 recorded flood events in the past 50 years. Most recent major flood: 2010 |
| nearest water | local creek (1.8 miles) | James River (2.3 miles) |
| elevation ft | 538 | 1,706 |
| population | 4,816 | 57,551 |
| median home value | 616,084 | 555,030 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $56,181 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $57,384 |
| mitigation tips | Elevate utilities above base flood elevation; install sump pumps with battery backup; consider flood-proofing ground floor; maintain flood insurance; create an emergency evacuation plan; store important documents above flood level. | Elevate utilities above base flood elevation; install sump pumps with battery backup; consider flood-proofing ground floor; maintain flood insurance; create an emergency evacuation plan; store important documents above flood level. |
| fema map id | 5572C316J | 3183C732J |
| last updated | 2025-01-01 | 2025-01-01 |
Our team analyzes data from FEMA National Flood Hazard Layer to deliver accurate, up-to-date information. All data is verified and cross-referenced with official sources.