Piracaia is a municipality in the state of São Paulo in Brazil.

in an area of 386 km².

[2] The elevation is 792 m. The municipality was established in 1859 as Santo Antônio da Cachoeira, and its name was changed to Piracaia on 20 August 1906.

[3] In telecommunications, the city was served by Companhia Telefônica Brasileira until 1973, when Telecomunicações de São Paulo took over.

[4] This geographical article relating to the state of São Paulo is a stub.