Flood Zone Comparison
Compare key metrics between 21911 21911, MD — Zone VE and 23180 23180, VA — Zone VE. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 21911 21911, MD — Zone VE | 23180 23180, VA — Zone VE |
|---|---|---|
| name | 21911 21911, MD — Zone VE | 23180 23180, VA — Zone VE |
| zip code | 21911 | 23180 |
| city | 21911 | 23180 |
| state | Maryland | Virginia |
| state code | MD | VA |
| category | Very High Risk | Very High Risk |
| flood zone | Zone VE (Very High Risk — Coastal 100-Year + Wave Action) | Zone VE (Very High Risk — Coastal 100-Year + Wave Action) |
| risk level | Very High Risk | Very High Risk |
| annual flood prob | 1% annual chance with velocity wave action | 1% annual chance with velocity wave action |
| insurance required | Required — highest risk coastal zone | Required — highest risk coastal zone |
| avg annual premium | 5,072 | 5,085 |
| base flood elevation | 19 ft | 6 ft |
| historical floods | 5 recorded flood events in the past 50 years. Most recent major flood: 2022 | 11 recorded flood events in the past 50 years. Most recent major flood: 2005 |
| nearest water | Merrimack River (5.0 miles) | Tennessee River (1.3 miles) |
| elevation ft | 48 | 686 |
| population | 47,630 | 6,500 |
| median home value | 768,322 | 177,525 |
| flood damage risk | 65-80% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $34,475 | 65-80% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $156,393 |
| mitigation tips | Reinforce foundation against wave action; install storm shutters; elevate entire structure if possible; maintain maximum flood insurance coverage; establish evacuation routes; consider relocating critical infrastructure to upper floors. | Reinforce foundation against wave action; install storm shutters; elevate entire structure if possible; maintain maximum flood insurance coverage; establish evacuation routes; consider relocating critical infrastructure to upper floors. |
| fema map id | 8134C142J | 1689C573J |
| 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.