Derry is a city in Northern Ireland, United Kingdom. It is also commonly known by its alternative name Londonderry, though locals and many institutions prefer Derry. The city sits on the River Foyle, spanning both banks, and lies near the border with County Donegal in the Republic of Ireland. It is the administrative center of the Derry City and Strabane District.

If you meant the fictional town of Derry from Stephen King’s works, that Derry is not a real place in Maine or anywhere else; it’s a fictional setting created by King, with Bangor, Maine serving as the real-life inspiration for the author’s writing. The character and town appear across several King novels and stories, including It.