Flood Zone Comparison
Compare key metrics between 27820 27820, NC — Zone D and 48370 48370, MI — Zone A. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 27820 27820, NC — Zone D | 48370 48370, MI — Zone A |
|---|---|---|
| name | 27820 27820, NC — Zone D | 48370 48370, MI — Zone A |
| zip code | 27820 | 48370 |
| city | 27820 | 48370 |
| state | North Carolina | Michigan |
| state code | NC | MI |
| category | Undetermined | High Risk |
| flood zone | Zone D (Undetermined Risk — No Analysis Performed) | Zone A (High Risk — 100-Year Floodplain, No BFE) |
| risk level | Undetermined | High Risk |
| annual flood prob | Unknown — flood risk not yet determined by FEMA | 1% annual chance (100-year flood) |
| insurance required | Recommended — risk is undetermined | Required for federally-backed mortgages |
| avg annual premium | 904 | 904 |
| base flood elevation | N/A — not in Special Flood Hazard Area | 25 ft |
| historical floods | 2 recorded flood events in the past 50 years. Most recent major flood: 2011 | 11 recorded flood events in the past 50 years. Most recent major flood: 2006 |
| nearest water | retention pond (4.5 miles) | Merrimack River (3.9 miles) |
| elevation ft | 1,094 | 776 |
| population | 26,428 | 5,286 |
| median home value | 745,009 | 120,229 |
| flood damage risk | Unknown chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $154,142 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $58,704 |
| mitigation tips | Purchase flood insurance as a precaution; research historical flooding in your area; contact your local floodplain administrator; maintain proper drainage; prepare an emergency kit and evacuation plan. | 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 | 9979C495J | 7250C957J |
| 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.