In How to Train Your Dragon, Hiccup lives on the Viking island of Berk.
Berk is a rugged island community in the North Sea setting of the franchise. Its residents have spent generations defending themselves against dragon raids, so the island’s culture initially treats dragons as dangerous enemies. Hiccup’s friendship with Toothless challenges that tradition.
As more Vikings learn to work with dragons, Berk changes from a fortified human settlement into a shared community where dragons live alongside people. The island remains the main home of Hiccup, Astrid, Stoick, Gobber, and the other young riders through much of the trilogy.
In The Hidden World, the growing dragon population and repeated attacks force the people of Berk to leave. They eventually seek safety in the hidden dragon sanctuary. New Berk is the name used for their later settlement, not the original island.