The province of the Bangka Belitung archipelago is one of the relatively young provinces in Indonesia. Based on BPS data in 2021, the population of Bangka Belitung is around 1.473.165. This population data is very useful for formal demography and will influence local government policies, economic stability and environmental balance. In this study, the population growth of the Bangka Belitung Islands Province was modeled using the Leslie model. The model show that the population of the Bangka Belitung Islands Province will decrease slowly.