Ageing and dependency

People over 64 as a share of the population, and the young and old per 100 people of working age.

The age dependency ratio is the number of people under 15 and over 64 per 100 people of working age, 15 to 64. The old-age dependency ratio counts only those over 64, the people whom pensions and health care must support per 100 workers. The share aged 65 and over is the plainest measure of an ageing population. The UN Population Division estimates them in its World Population Prospects, and the World Bank republishes them.

• Demography
• Ageing
• Population
• Pensions
• Country
• Year