What is the busiest train station in the western district of the United States?

Union Station in Los Angeles, CA, is recognized as the busiest train station in the western district of the United States, primarily due to its extensive passenger rail services and strategic location. It serves as a major hub for both Amtrak and Metrolink trains, accommodating a high volume of commuters and travelers. The station's design integrates various transportation options, including buses and light rail, enhancing its accessibility and attracting a larger number of passengers.

The historical significance of Union Station, combined with its role in connecting urban and regional transport networks, contributes to its high volume of daily ridership. Additionally, the station’s location within a densely populated metropolitan area, including Los Angeles, draws both leisure and business travelers, further solidifying its status as the busiest station in the western U.S.

In contrast, other stations listed, such as Grand Central Terminal in New York, while iconic and heavily trafficked, are located in the eastern United States. Similarly, Union Station in Denver and Chicago Union Station, while significant, do not match the volume of traffic experienced at Los Angeles Union Station.