Singapore Prison Service publishes annual counts of nationals and foreign citizens held in prisons, penal institutions, or correctional institutions in this open data collection. The CSV Number of National and Foreign Citizens Held supports criminology research and justice sector transparency from 2006 through 2022. Analysts studying incarceration demographics can use the resident breakdown without accessing individual inmate records. Figures reflect SPS administrative population counts as officially described.
Number of Local and Foreign held in prisons, penal institutions or correctional institutions
Singapore Prison Service CSV of persons held in prisons, penal, or correctional institutions, split by national and foreign citizenship type from 2006 through 2025. Columns cover year, type of citizens, and headcount. Justice and demography researchers track the composition of Singapore’s custodial population over nearly two decades.