Flood Zone Comparison
Compare key metrics between 21651 21651, MD — Zone A and 29661 29661, SC — Zone A. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 21651 21651, MD — Zone A | 29661 29661, SC — Zone A |
|---|---|---|
| name | 21651 21651, MD — Zone A | 29661 29661, SC — Zone A |
| zip code | 21651 | 29661 |
| city | 21651 | 29661 |
| state | Maryland | South Carolina |
| state code | MD | SC |
| category | High Risk | High Risk |
| flood zone | Zone A (High Risk — 100-Year Floodplain, No BFE) | Zone A (High Risk — 100-Year Floodplain, No BFE) |
| 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 | 2,048 | 2,048 |
| base flood elevation | 5 ft | 20 ft |
| historical floods | 13 recorded flood events in the past 50 years. Most recent major flood: 2013 | 0 recorded flood events in the past 50 years |
| nearest water | Red River (3.3 miles) | Puget Sound (1.8 miles) |
| elevation ft | 1,742 | 1,114 |
| population | 15,932 | 39,131 |
| median home value | 376,643 | 754,373 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $21,179 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $85,860 |
| 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 | 9543C282J | 5802C776J |
| 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.