Items Unit Latest Period Latest Data % Change
(Y-o-Y) 1/
Previous
Period Data
% Change
(Y-o-Y) 2/
Population and Population Structure
(Mid-Year Estimates)
           
Total Population 3/ '000 2019 5,703.6 1.2 5,638.7 0.5
Singapore Residents 3/ '000 2019 4,026.2 0.8 3,994.3 0.7
Singapore Citizens '000 2019 3,500.9 0.8 3,471.9 1.0
Singapore Permanent Residents '000 2019 525.3 0.6 522.3 -0.8
Population Density Per Sq Km 2019 7,866 na 7,804 na
Items Unit Latest Period Latest Data % Change
(Y-o-Y) 1/
Previous
Period Data
% Change
(Y-o-Y) 2/
Age Structure 4/            
Below 20 years '000 2019 813.3 -0.5 817.6 -1.2
20-64 Years '000 2019 2,631.3 0.1 2,628.8 0.3
65 years & Over '000 2019 581.7 6.2 547.9 6.0
Median Age 4/ Years
2019 41.1 na 40.8 na
Old Age Support Ratio 4/ Number of Residents Aged 20-64
per Resident Aged 65 Years & Over
2019 4.5 na 4.8 na
Sex Ratio 4/  Males per 1,000 Females 2019 957 na 959 na

na not available or not applicable.
1 Refers to % change in latest period over the same period in the previous year.
2 Refers to % change in the previous period over the same period in the previous year.
3 Total population comprises Singapore residents and non-residents. The resident population comprises Singapore citizens and permanent residents
4 Refers to the resident population.