Middlesex County is the most populous county in New England home to Cambridge and over 30 municipalities in the greater Boston area. Cambridge hosts Harvard University and MIT — two of the world's most important research universities. Route 128 is home to the highest concentration of biotechnology and technology companies in the world. The Merrimack Mystic and Charles Rivers create flooding risk. Ida in 2021 caused significant flooding across the county.
// 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
* We may earn a commission from qualifying purchases.
// Risk Intelligence
| Threat Score | 5 / 10 Moderate Risk |
| Primary Hazard | Hurricane / Nor'easter |
| Secondary Hazard | Flash Flooding |
| FEMA Flood Zone | Moderate |
| Federally Declared Disasters | 6 |
| Last Major Event | Ida 2021 |
| Event Frequency | Annual |
// Emergency Operations
| Emergency Mgmt Phone | (617) 625-6600 |
| Emergency Shelters | 30 designated facilities |
| Evacuation Routes | I-95 I-93 MA-2 US-3 |
// County Profile
| County | Middlesex County MA |
| State | Massachusetts (MA) |
| Population | 1 |
| Area | 818 sq miles |
| FEMA Region | Moderate |
// Major Cities
// Cities in This County
// Other Massachusetts Counties
// Nearby Infrastructure Risks
Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.
Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.