Harlech is a town and seaside resort in Gwynedd, within the historical boundaries of Meirionnydd in northwest Wales. Lying on Tremadog Bay and within the Snowdonia National Park, it has a population of 1,447, of whom 51% speak Welsh. The town is located in the unitary authority of Gwynedd which was formed in 1996, from 1974 to 1996 it was in the Meirionydd District of the 1974 County of Gwynedd, and before 1974 it was in the historic county of Merionethshire.