How is the Chicago EMS System defined?

• A. The City of Chicago city limits, comprised of four EMS Systems.
• B. The County of Cook.
• C. A single hospital network.
• D. A regional collaboration among neighboring counties.

Answer: (A)

The key idea is that EMS system boundaries are defined by jurisdictional control, not by hospitals or broader counties. In Chicago, the EMS System is defined by the City of Chicago’s city limits, and within that area the city has four EMS Systems to manage response, communications, and patient routing across the urban area. This municipal framework governs how EMS operates, coordinates with hospitals, and allocates resources inside the city.

The county boundary would pull in suburban areas outside Chicago and isn’t how Chicago’s EMS governance is organized. A single hospital network doesn’t define how EMS is structured, since EMS spans multiple facilities and requires city-wide coordination. A regional collaboration among neighboring counties would extend beyond Chicago’s city limits and doesn’t reflect the city’s own EMS governance.