The results show that, the amount of in-migration to migrate a lifetime that is equal to 1,534,849 people, while for the out-migration of 164,358 people, next to migration risen by 526,711 people, while for the out-migration of 91,280 people in 2000. By collecting data results from the 2000 population census, Supas 20 population censuses were analyzed using cross tabulation analysis subsequent authors conducted a study to strengthen the research literature. This study uses secondary data obtained from the offices or agencies associated with this research that the Central Bureau of Statistics Riau Province. The purpose of this study was to determine the volume and direction of migration in Riau province, as well as to know the origin and destination of migrants, the motivation of migrants and migrant risen life. From the aspect of the population, these areas have the opportunity for site locations interest in Riau Islands Province, however, other aspects need to be examined in order to complete the data in the NPP siting in the Riau Islands Province.The research was conducted in the province of Riau. Singkep South District is District with the lowest number of population.

Lowest population with low density in Riau Islands Province which can be an option in interest siting is located in the city of Tanjungpinang District of Tanjungpinang City (18148 inhabitants), in the District Lingga District of Singkep South (1957 inhabitants), in Karimun District of Ungar (5983 inhabitants), Durai (6038 inhabitants), and the Belat (6456 inhabitants), in the District of Bintan District of Mantang (4168 inhabitants) and Tambelan (5081 inhabitants), in the city of Batam District of Bulang (11484 inhabitants) and Galang (16955 inhabitants). The results showed that the population distribution in Riau Islands Province is uneven, some regions with a large area have number and population density is low, whereas regions with low area have a high population number.

The method used is secondary data collection (the number and density of population), evaluation and analysis of data. The aim of research is to know the population distribution in Riau Islands Province as consideration determination of NPP site interest locations. 01-P/Ka-Bapeten/VI-99 to guidelines for determination the siting of a nuclear reactor, the number of people at a distance reactor to the outer limit of densely populated areas is not more than 25000 inhabitants. In determining of NPP site interest locations, one of the aspects that should be considered is the number and density of population. The activity of NPP site pre-survey for demographic aspects at Riau Islands Province has been carried out.

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