The first train passed through the municipality in 1890. It was struck by a smallpox epidemic in 1911. After Independence, Aporo was part of the municipality of Irimbo. However, administrative and religious conflicts eventually caused the creation of a new municipality in 1921 encompassing the Chupio Valley. The first municipal president was C. Celestino Velazquez. Three years later, the seat lost its status and the area became part of the Senguio municipality. Its final status as an independent municipality was set by state decree in 1927, with its current boundaries. Since then, Aporo has had over sixty municipal presidents.