With a population growth from 140,000 people in 1970 to 750,000 people in 2008, Campo Grande is the third largest urban center of the Center-West region, and the 23rd largest city in the country. In 1977, the State of Mato Grosso was split into two, and Campo Grande became the capital of the new state of Mato Grosso do Sul, comprising the southern portion of the former state. By that time, Campo Grande had long surpassed the latter's capital city of Cuiabá in population, which is unusual in Brazil, where most capitals are also the states' largest cities.