An interchange station or a transfer station is a train station for more than one railway route in a public transport system that allows passengers to change from one route to another, often without having to leave a station or pay an additional fare.
Transfer may occur within the same mode, or between rail modes, or to buses (for stations with bus termini attached). Such stations usually have more platforms than single route stations. These stations can exist in either commercial centers or on the city outskirts in residential areas. Cities typically plan for land use around interchange stations for development. Passengers may be required to pay extra fare for the interchange if they leave a paid area.