Population Estimates: using administrative data from many sources for population estimates

Singapore adopted the de jure concept for Singapore's population estimates based on a person's place of usual residence. Under the de jure concept of "usual residence", Singapore residents (citizens and permanent residents) with valid local addresses and who were not away from Singapore for a continuous period of 12 months or longer were included in the total population count. Non-residents comprising foreigners who were working, studying or living in Singapore but not granted permanent residence were also included in the total population. The transient population, such as tourists and short-term visitors, are excluded. Basic characteristics of Singapore's population estimates are compiled using administrative records from multiple sources. The merged administrative records provided the basic population count and characteristics such as age, sex, type of dwelling and geographic distribution in Singapore.