Flood Zone Comparison
Compare key metrics between 21738 21738, MD — Zone AE and 84518 84518, UT — Zone AE. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 21738 21738, MD — Zone AE | 84518 84518, UT — Zone AE |
|---|---|---|
| name | 21738 21738, MD — Zone AE | 84518 84518, UT — Zone AE |
| zip code | 21738 | 84518 |
| city | 21738 | 84518 |
| state | Maryland | Utah |
| state code | MD | UT |
| 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 | 3,182 | 3,181 |
| base flood elevation | 18 ft | 6 ft |
| historical floods | 1 recorded flood events in the past 50 years. Most recent major flood: 2010 | 11 recorded flood events in the past 50 years. Most recent major flood: 2010 |
| nearest water | Susquehanna River (4.4 miles) | Puget Sound (1.6 miles) |
| elevation ft | 1,626 | 6,228 |
| population | 46,880 | 52,197 |
| median home value | 559,699 | 625,993 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $63,796 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $172,031 |
| 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 | 1309C185J | 7863C983J |
| 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.