What Is The Population Of The World 2024 By Age. Population growth, population ageing, urbanization and international migration are four major demographic trends shaping our world. According to the world population review, the country with the oldest age structure in the world is china with more than 166 million residents over the age of 65.

United nations projections are also included through the year 2100. According to the world population review, the country with the oldest age structure in the world is china with more than 166 million residents over the age of 65.