Johor Bahru, colloquially referred to as JB, is the capital city of the state of Johor, Malaysia and the core city of Johor Bahru District, the second largest district in Malaysia by population. It is the second largest GDP contributor among all major cities in Malaysia, and forms a part of Iskandar Malaysia, the nation's largest special economic zone by investment value. The city has a population of 858,118 people within an area of 391.25 km2.