Flood Zone Comparison
Compare key metrics between 20422 20422, DC — Zone AE and 78418 78418, TX — Zone AE. Data sourced from FEMA National Flood Hazard Layer (2025).
| Metric | 20422 20422, DC — Zone AE | 78418 78418, TX — Zone AE |
|---|---|---|
| name | 20422 20422, DC — Zone AE | 78418 78418, TX — Zone AE |
| zip code | 20422 | 78418 |
| city | 20422 | 78418 |
| state | District of Columbia | Texas |
| state code | DC | TX |
| 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 | 3,419 | 3,419 |
| base flood elevation | 24 ft | 13 ft |
| historical floods | 9 recorded flood events in the past 50 years. Most recent major flood: 2011 | 4 recorded flood events in the past 50 years. Most recent major flood: 2013 |
| nearest water | Rio Grande (3.3 miles) | Lake Michigan (2.6 miles) |
| elevation ft | 934 | 846 |
| population | 26,758 | 53,232 |
| median home value | 664,957 | 523,531 |
| flood damage risk | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $44,781 | 40-60% chance of flood damage over a 30-year mortgage. Estimated average damage per flood event: $150,272 |
| 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 | 3821C979J | 2513C246J |
| 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.