Flood Zone Comparison
Compare key metrics between 21239 21239, MD — Zone A and 39337 39337, MS — Zone AE. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 21239 21239, MD — Zone A | 39337 39337, MS — Zone AE |
|---|---|---|
| name | 21239 21239, MD — Zone A | 39337 39337, MS — Zone AE |
| zip code | 21239 | 39337 |
| city | 21239 | 39337 |
| state | Maryland | Mississippi |
| state code | MD | MS |
| 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 | 2,758 | 2,758 |
| base flood elevation | 20 ft | 22 ft |
| historical floods | 9 recorded flood events in the past 50 years. Most recent major flood: 2014 | 0 recorded flood events in the past 50 years |
| nearest water | local creek (1.8 miles) | Pacific Ocean (1.3 miles) |
| elevation ft | 926 | 1,033 |
| population | 60,304 | 21,829 |
| median home value | 285,295 | 749,667 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $181,166 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $98,067 |
| 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 | 3944C136J | 9453C513J |
| 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.