- Bunbury is a city located in the state of Western Australia. It is the third largest city in the state and has a population of approximately 75,000 people. The city is situated on the shores of Koombana Bay and is known for its pristine beaches, vibrant arts scene, and outdoor recreational activities. Bunbury offers a range of amenities including shopping centers, restaurants, and entertainment venues. The city is also a popular tourist destination, with attractions such as the Dolphin Discovery Centre and the Bunbury Regional Art Gallery.