Flood Zone Comparison
Compare key metrics between 20889 20889, MD — Zone A and 98663 98663, WA — Zone AE. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 20889 20889, MD — Zone A | 98663 98663, WA — Zone AE |
|---|---|---|
| name | 20889 20889, MD — Zone A | 98663 98663, WA — Zone AE |
| zip code | 20889 | 98663 |
| city | 20889 | 98663 |
| state | Maryland | Washington |
| state code | MD | WA |
| category | High Risk | High Risk |
| flood zone | Zone A (High Risk — 100-Year Floodplain, No BFE) | 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 | 2,337 | 2,337 |
| base flood elevation | 5 ft | 18 ft |
| historical floods | 12 recorded flood events in the past 50 years. Most recent major flood: 2016 | 6 recorded flood events in the past 50 years. Most recent major flood: 2018 |
| nearest water | Lake Superior (1.3 miles) | Hudson River (0.9 miles) |
| elevation ft | 987 | 595 |
| population | 70,820 | 19,656 |
| median home value | 365,444 | 253,232 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $61,462 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $40,201 |
| 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 | 5503C469J | 7667C354J |
| 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.