Flood Zone Comparison
Compare key metrics between 21920 21920, MD — Zone AE and 63114 63114, MO — Zone AE. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 21920 21920, MD — Zone AE | 63114 63114, MO — Zone AE |
|---|---|---|
| name | 21920 21920, MD — Zone AE | 63114 63114, MO — Zone AE |
| zip code | 21920 | 63114 |
| city | 21920 | 63114 |
| state | Maryland | Missouri |
| state code | MD | MO |
| 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 | 1,797 | 1,797 |
| base flood elevation | 20 ft | 22 ft |
| historical floods | 4 recorded flood events in the past 50 years. Most recent major flood: 2016 | 11 recorded flood events in the past 50 years. Most recent major flood: 2005 |
| nearest water | Chesapeake Bay (3.5 miles) | Lake Superior (5.0 miles) |
| elevation ft | 138 | 59 |
| population | 38,038 | 61,963 |
| median home value | 474,798 | 496,112 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $125,090 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $92,936 |
| 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 | 4361C867J | 3596C191J |
| 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.