Population Ages 0 to 14 for Low and Middle Income Countries was 26.97668 % of Total in January of 2023, according to the United States Federal Reserve. Historically, Population Ages 0 to 14 for Low and Middle Income Countries reached a record high of 41.14389 in January of 1966 and a record low of 26.97668 in January of 2023. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Ages 0 to 14 for Low and Middle Income Countries - last updated from the United States Federal Reserve on April of 2026.