- Bangor city is located in Gwynedd, North Wales, United Kingdom. It is the oldest city in Wales and has a population of approximately 18,808 people. Bangor is known for its historical landmarks, such as Bangor Cathedral and Penrhyn Castle, as well as its scenic beauty, with the Snowdonia National Park located nearby. The city is also home to Bangor University, which attracts students from all over the world. Bangor has a vibrant cultural scene, with art galleries, theaters, and music venues showcasing local talent.