Mercer County NJ in New Jersey faces tornado / flash flooding risk across its 226 square mile area. Trenton the state capital serves this central New Jersey county with Delaware River flooding. Mercer serves as the county seat and regional emergency coordination hub.
// Preparedness Recommendations
- Evacuation routes inland should be identified in advance.
- Store at least 72 hours of food and water.
- Elevate critical belongings above flood level.
- Have backup power ready in case of grid failure.
// Recommended Supplies
Essential gear for power outages, severe weather, and emergency situations in your area.
- Emergency Food Supplies
- Water Filtration & Storage
- Backup Generator
- Solar Backup Power
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// Risk Intelligence
| Threat Score | 5 / 10 Low Risk |
| Primary Hazard | Tornado / Flash Flooding |
| Secondary Hazard | Severe Storm |
| FEMA Flood Zone | Low |
| Federally Declared Disasters | 6 |
| Last Major Event | Ida 2021 |
| Event Frequency | Annual |
// Emergency Operations
| Emergency Mgmt Phone | (609) 989-6000 |
| Emergency Shelters | 2 designated facilities |
| Evacuation Routes | State and US highways |
// County Profile
| County | Mercer County NJ |
| State | New Jersey (NJ) |
| Population | 367 |
| Area | 226 sq miles |
| FEMA Region | Low |
// Major Cities
// Cities in This County
// Other New Jersey Counties
Ocean County NJ
Hurricane / Storm Surge
8/10
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Hudson County NJ
Hurricane / Storm Surge
7/10
High
Salem County NJ
Hurricane / Storm Surge
7/10
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Atlantic County NJ
Hurricane / Storm Surge
7/10
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Union County NJ
Hurricane / Storm Surge
7/10
Moderate
Cape May County NJ
Hurricane / Storm Surge
7/10
Moderate