Quillacollo Municipality is the first municipal section of the Quillacollo Province in the Cochabamba Department, Bolivia. Its capital is Quillacollo. At the time of census 2001 the municipality had 104,206 inhabitants.

Quillacollo is a province in the Cochabamba Department, Bolivia. It is known for its festival in August where people from all over Bolivia come and pay homage to the Virgin of Urqupiña. Quillacollo is said to be one of the fastest-growing cities in Bolivia.