In 1905, São Caetano was elevated to Fiscal District. In 1924 the village became a city. In 1947, in a movement led by the "Jornal de São Caetano", a list of 5,197 signatures was made and sent to the State Legislative Assembly, requesting a plebiscite. The popular consultation was held on 24 October 1948; 8,463 people voted in favor of autonomy, and 1,020 voted against. On 24 December 1948, the governor of the state of São Paulo, Ademar de Barros, ratified the decision and created the "municipality of São Caetano do Sul", through State Law n. 233, dated 12/24/1948, adding the qualifier of the South, to distinguish it from Pernambuco's homonym. On 30 December 1953, the County of São Caetano do Sul was created