 This was ratified on 21 April 1897.On 26 October 1906, under law 1018, the district was founded and ratified on 12 December 1906.The name of the municipality has changed over time, including, Capela de Sertãozinho, Engenho de Nossa Senhora Aparecida do Sertaozinho, Aparecida de Sertãozinho, and its current name, Sertãozinho.