Piracicaba is a Brazilian municipality located in the interior of São Paulo state within the Southeast Region of Brazil. It serves as the primary city of the Metropolitan Region of Piracicaba (RMP) and is situated approximately 150 km (93 mi) northwest of the state capital, São Paulo.
The municipality covers an area of just over 1,378 km2 (532 sq mi), with roughly 169 km2 (65 sq mi) designated as urban area. It has a population of 438,827 inhabitants, ranking it as the 13th most populous municipality in the state of São Paulo.