United Nations Statistics Division
- UNData - The numerous databases or tables collectively known as "datamarts" contain over 60 million data points and cover a wide range of statistical themes including agriculture, crime, communication, development assistance, education, energy, environment, finance, gender, health, labour market, manufacturing, national accounts, population and migration, science and technology, tourism, transport and trade.
OECD
- Demography and Population - Click on Demography and Population in All themes, then choose sex and country. Population archives and projections, by age group.
The World Bank
United Nations