[3] Tribiano borders the following municipalities: Paullo, Mediglia, Mulazzano, Colturano, Dresano.

After the Second Italian War of Independence, following the enactment of the Rattazzi Decree (1859), the municipality was assigned to the province of Milan.

In blue, it has a bundle of three ears of wheat, each surmounted by a star, with the word "Trebianum" on its head, all in gold.

A historic town with a mainly agricultural economy, around the 1960s, around 70 factories / industries were installed on the territory, which ensure work for thousands of workers from neighboring municipalities.

The landscape is typical of the Po Valley, with fields surrounded by canals, ditches and canals, suitable for irrigation, long avenues rendered ethereal by the rows of poplars, plane trees and willows that line the edges.