Flood Zone Comparison
Compare key metrics between 21087 21087, MD — Zone AE and 29142 29142, SC — Zone A. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 21087 21087, MD — Zone AE | 29142 29142, SC — Zone A |
|---|---|---|
| name | 21087 21087, MD — Zone AE | 29142 29142, SC — Zone A |
| zip code | 21087 | 29142 |
| city | 21087 | 29142 |
| state | Maryland | South Carolina |
| state code | MD | SC |
| category | High Risk | High Risk |
| flood zone | Zone AE (High Risk — 100-Year Floodplain) | 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 | 862 | 862 |
| base flood elevation | 22 ft | 26 ft |
| historical floods | 4 recorded flood events in the past 50 years. Most recent major flood: 2019 | 3 recorded flood events in the past 50 years. Most recent major flood: 2015 |
| nearest water | Ohio River (2.7 miles) | James River (1.9 miles) |
| elevation ft | 911 | 1,288 |
| population | 72,072 | 70,276 |
| median home value | 749,803 | 414,106 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $186,786 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $113,612 |
| 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 | 3189C311J | 3028C529J |
| 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.