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 2021 5,453.6 -4.1 5,685.8 -0.3
Singapore Residents 3/ '000 2021 3,986.8 -1.4 4,044.2 0.4
Singapore Citizens '000 2021 3,498.2 -0.7 3,523.2 0.6
Singapore Permanent Residents '000 2021 488.7 -6.2 521.0 -0.8
Population Density Per Sq Km 2021 7,485 na 7,810 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 2021 782.1 -2.7 803.4 -1.2
20-64 Years '000 2021 2,565.7 -2.3 2,626.4 -0.2
65 years & Over '000 2021 639.0 4.0 614.4 5.6
Median Age 4/ Years
2021 41.8 na 41.5 na
Old Age Support Ratio 4/ Number of Residents Aged 20-64
per Resident Aged 65 Years & Over
2021 4.0 na 4.3 na
Sex Ratio 4/  Males per 1,000 Females 2021 960 na 957 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.