Moderate Risk Illinois  ·  Tornado / Flash Flooding

DuPage County IL

EMERGENCY PREPAREDNESS & DISASTER RISK PROFILE  ·  LAST UPDATED: Mar 2026

5/ 10
Threat Score
Population
936
Area
334
sq miles
Primary Hazard
Tornado / Flash Flooding
FEMA Disasters
6
federally declared

DuPage County west of Chicago is one of the wealthiest counties in Illinois and hosts major corporate headquarters research facilities and O'Hare Airport's western approach corridor. The West Branch DuPage River creates flooding risk through suburban communities. The county sits in a moderate tornado corridor and has experienced significant tornado events including the 1990 Plainfield tornado which killed 29 people just south of the county. Major corporate employers including McDonald's headquarters create critical economic infrastructure emergency planning requirements.

// 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.

// Risk Intelligence

Threat Score 5 / 10    Moderate Risk
Primary Hazard Tornado / Flash Flooding
Secondary Hazard Severe Storm
FEMA Flood Zone Moderate
Federally Declared Disasters 6
Last Major Event 2013 Flooding
Event Frequency Annual

// Emergency Operations

Emergency Mgmt Phone (630) 407-6800
Emergency Shelters 20 designated facilities
Evacuation Routes I-88 I-355 IL-53 IL-83

// County Profile

County DuPage County IL
State Illinois (IL)
Population 936
Area 334 sq miles
FEMA Region Moderate

// Major Cities

Downers Grove IL Naperville IL

// Cities in This County

// Other Illinois Counties

// Nearby Infrastructure Risks

Critical infrastructure facilities within or near this area that could affect civilian safety during emergencies, conflict, or infrastructure failures.

🚂
Chicago Intermodal Rail Gateway IL
Rail Infrastructure  ·  Chicago, IL  ·  BNSF / Union Pacific / CSX / Norfolk Southern / CN / CP  ·  5-mi risk zone
9/10 Critical
💧
Chicago Metropolitan Water Reclamation District IL
Water Treatment  ·  Chicago, IL  ·  Metropolitan Water Reclamation District of Greater Chicago  ·  5-mi risk zone
9/10 Critical
🚂
Union Pacific Proviso Yard Chicago IL
Rail Infrastructure  ·  Melrose Park, IL  ·  Union Pacific Railroad  ·  5-mi risk zone
8/10 High

Infrastructure risk data is for emergency preparedness awareness. Facility locations are publicly known. Always follow official emergency guidance.