What city is represented by the city code ORD?

The city code ORD represents Chicago, Illinois, specifically O'Hare International Airport. This airport is one of the busiest in the United States and is a major hub for domestic and international flights. The "ORD" code is derived from the airport's original name, "Orchard Field." Understanding airport codes is crucial for travelers and those in the aviation industry as they provide a standard way to identify locations efficiently. This is why knowing the city code for O'Hare alongside its corresponding city is important for travel planning and logistics.