Population Ages 15 to 64 for the United Republic of Tanzania was 53.80198 % of Total in January of 2020, according to the United States Federal Reserve. Historically, Population Ages 15 to 64 for the United Republic of Tanzania reached a record high of 53.80198 in January of 2020 and a record low of 51.01142 in January of 1978. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Ages 15 to 64 for the United Republic of Tanzania - last updated from the United States Federal Reserve on April of 2024.