Águas de São Pedro
Recognizing the importance of the thermal springs in the region, the São Paulo State Government on 19 June 1940 founded the (Hydromineral and Climatic Spa of Águas de São Pedro). Despite this, the city celebrates its birthday on 25 July, the date in 1940 of the founding of the first major building in the city, the "Grande Hotel" (now "Grande Hotel São Pedro"). The municipality of Águas de São Pedro was incorporated by State Law No.233, of 24 December 1948.
Aporé
The history of Aporé begins in the twentieth century near a site where a village, Arraial do Corrente, already existed. With the decadence of this settlement rancher João Nunes founded a settlement nearby on the banks of the Aporé River. Lands were donated to erect a chapel to the Divino Espírito Santo and a bridge was built over the river, allowing communications with Mato Grosso. In 1938 the first houses appeared and the village was named Aporé after the river, a name which means "river of fish". In 1958 Aporé became a municipality.