Flood Zone Comparison
Compare key metrics between 21624 21624, MD — Zone AE and 29707 29707, SC — Zone AE. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 21624 21624, MD — Zone AE | 29707 29707, SC — Zone AE |
|---|---|---|
| name | 21624 21624, MD — Zone AE | 29707 29707, SC — Zone AE |
| zip code | 21624 | 29707 |
| city | 21624 | 29707 |
| state | Maryland | South Carolina |
| state code | MD | SC |
| 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 | 3,129 | 3,130 |
| base flood elevation | 18 ft | 23 ft |
| historical floods | 7 recorded flood events in the past 50 years. Most recent major flood: 2009 | 10 recorded flood events in the past 50 years. Most recent major flood: 2011 |
| nearest water | local stream (1.0 miles) | Chesapeake Bay (3.2 miles) |
| elevation ft | 678 | 114 |
| population | 38,976 | 53,078 |
| median home value | 215,171 | 470,853 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $162,501 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $64,309 |
| 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 | 3418C314J | 6241C570J |
| 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.