Kalgoorlie, alternatively known as Kalgoorlie-Boulder, is a city in the Goldfields-Esperance region of Western Australia, and is located 595 kilometres (370 mi) east-northeast of Perth, the state capital. The city was founded in 1893 during the Yilgarn-Goldfields gold rush, and is located close to the so-called "Golden Mile". It has a population of 28,246, making it the largest urban centre in the Goldfields-Esperance region and the fifth-largest in Western Australia.