What is the name of the platform at King's Cross station where students board the Hogwarts Express? It is Platform 9¾. The hidden platform is the departure point for the train carrying Hogwarts students to the school.
Platform 9¾ is located between the ordinary platforms numbered 9 and 10 at King's Cross station in London. In the story, witches and wizards reach it by walking straight through the barrier between the two platforms. Harry first learns about it from the Weasley family after arriving at King's Cross alone.
The Hogwarts Express traditionally leaves on 1 September, carrying students north to Hogsmeade Station near Hogwarts. Students return to London at the end of the school year, and the train is also used for holiday journeys such as the Christmas trip.
The fraction is part of the name, so Platform 9¾ should not be confused with Platforms 7¾, 8¾, or 10½. In the real King's Cross station, a popular photo spot marks Platform 9¾, though it is positioned near platforms 9 and 10 rather than on a hidden magical platform.