Castanhal was officially founded on January, 28th of 1932 (date of certification) and received its name due to the common nut trees (portug: Castanha) around the train station of the Bragança - Belém railway. Workers from the Brazilian Northeast started settling around the station.
Castanhal was established on January 28th, 1932, and its name is derived from the presence of nut trees (Portuguese: Castanha) around the train station of the Bragança - Belém railway line. Settlers from the Northeast region settled near the station.