Population Muslim in East Java

According to the 2000 census, East Java has 34 million inhabitants, increasing to 37.4 million by 2010, second only to West Java  among Indonesian provinces. The inhabitants consist of mostly Javanese. Native minorities include migrants from nearby Madura, and distinct Javanese ethnicities such as the Tengger people in Bromo, the Samin and the Osing people in Banyuwangi. East Java also hosts a significant population of other ethnic groups, such as Chinese, Indians, and Arabs. In addition to the national language, Indonesian, they also speak Javanese. Javanese spoken in the western part of East Java is a recognizably similar dialect to the one spoken in nearby Central Java, with its hierarchy of high, medium, and low registers. But in the eastern cities of Surabaya, Malang, and surrounding areas, the people speak a more egalitarian version of Javanese, with much less regard for hierarchy and a richer vocabulary for vulgarity.

In addition to that, Madurese is spoken by around 15 millions of Madurese, concentrated in Madura Island, Kangean Islands, Masalembu Islands, Eastern part of East Java, and East Java main cities.