Flood Zone Comparison
Compare key metrics between 21841 21841, MD — Zone AE and 55427 55427, MN — Zone AE. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 21841 21841, MD — Zone AE | 55427 55427, MN — Zone AE |
|---|---|---|
| name | 21841 21841, MD — Zone AE | 55427 55427, MN — Zone AE |
| zip code | 21841 | 55427 |
| city | 21841 | 55427 |
| state | Maryland | Minnesota |
| state code | MD | MN |
| 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 | 2,343 | 2,343 |
| base flood elevation | 12 ft | 23 ft |
| historical floods | 7 recorded flood events in the past 50 years. Most recent major flood: 2004 | 3 recorded flood events in the past 50 years. Most recent major flood: 2023 |
| nearest water | James River (0.8 miles) | retention pond (2.5 miles) |
| elevation ft | 517 | 1,083 |
| population | 29,235 | 38,375 |
| median home value | 740,506 | 783,685 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $141,461 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $195,214 |
| 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 | 8076C540J | 7666C837J |
| 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.