Originally part of Riau Province, the Riau Islands  were split off as separate province in 1 July 2004 with Tanjungpinang  as its capital, located at Bintan Islands. The major ethnic group of the  province is Malay, others are Javanese, Sundanese Buginese, Minangkabau  and Batak.
Total  area of this province is 21,992 km2. This province consists of hundreds  of islands. The province has no land borders with other provinces. All  of the borders are waters. Riau Islands borders to The South China Sea  and Singapore Strait in the north, Karimata Strait in the south and  east, and Berhala Strait in the west side.
The  economy of Riau Islands is contributed mostly by industrial and mining  sector, for instance, bauxite deposits in Singkep Islands. Indonesia  government determines Batam as one of the biggest industrial area in  Indonesia.