Flood Zone Comparison
Compare key metrics between 21850 21850, MD — Zone AE and 55350 55350, MN — Zone A. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 21850 21850, MD — Zone AE | 55350 55350, MN — Zone A |
|---|---|---|
| name | 21850 21850, MD — Zone AE | 55350 55350, MN — Zone A |
| zip code | 21850 | 55350 |
| city | 21850 | 55350 |
| state | Maryland | Minnesota |
| state code | MD | MN |
| category | High Risk | High Risk |
| flood zone | Zone AE (High Risk — 100-Year Floodplain) | Zone A (High Risk — 100-Year Floodplain, No BFE) |
| 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 | 2,037 | 2,037 |
| base flood elevation | 28 ft | 16 ft |
| historical floods | 10 recorded flood events in the past 50 years. Most recent major flood: 2015 | 9 recorded flood events in the past 50 years. Most recent major flood: 2011 |
| nearest water | Tampa Bay (3.8 miles) | Potomac River (2.8 miles) |
| elevation ft | 851 | 1,890 |
| population | 68,555 | 43,132 |
| median home value | 227,861 | 316,495 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $197,052 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $46,454 |
| 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 | 1758C845J | 3653C858J |
| 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.