Population Grid Tonga 2025

Data Input: Settlement footprint from Tonga 2021 Population and Housing Census

Population allocated by aggregating 2021 PHC household population at pixel level by sex and by 5 years old age group to generate population grids disaggregated by age and sex. Women in fertility age, youth and elder population groups have been included.

Year Population Growth Rate calculated from Population Projections available at https://stats-staging.pacificdata.org/vis?pg=0&df[ds]=ds%3ASPC2&df[id]=DF_POP_PROJ&df[ag]=SPC&df[vs]=3.0&dq=A..._T._T&pd=2017%2C2027&to[TIME_PERIOD]=false&isAvailabilityDisabled=false&hc[Indicator]=&snb=9&tm=population%20projection

The human settlement footprint with population allocated has been converted into a ~100 m resolution raster.

Population projection carried out with the simplifying assumption that national rates apply evenly (without other subnational input data available, it is seen as appropriate for this exercise)

The spatial processing followed to generate the population grids can be accessed on this GitHub repository https://github.com/luisrua/sdd-popgrid-2025