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About the Municipality


ID card of the Municipality of Trezzo sull'Adda (MI)

The President of the Republic bestowed the title of City to the Municipality of Trezzo sull'Adda. 

Decree of the President of the Republic

Resident population as at 31.12.2015: 12.063
Resident population as at the census in 2001: 11.596

Adjacent municipalities:

Vaprio, Grezzago, Cornate, Capriate, Busnago, Bottanuco
Province: Milan

Distance from the chief town of the province:

31 km
Altitude of the town hall: 187 m
Hamlet: Concesa
ISTAT code: 015221
Cadastral code: L 411
Surface area in Sq km: 12,85

Water resources:

River Adda

Municipal roads:

33 km
Motorways: 2,4 km
Toll: A4 MI-VE exit Trezzo sull’Adda


Elections European Parliament:

North-West Constituency 


Chamber of Deputies

Lombardia 1 Constituency

Senate of the Republic

Regional elections: Lombardia Milan
Provincial elections: Milan Cassano d'Adda
Prefecture: Milan

Court and justice of the peace:

Court of Cassano
Court of appeal: Milan

Regional administrative court:


Tax Commission:

Local Health Authority:

ATS Milano Città Metropolitana

Health district:

Trezzese since January 2009 

Revenue agency:

Territorial agency: Milan
Hospital: Vimercate
Nearby hospitals: Vaprio and Zingonia
Social services: Offertasociale consortium
Carabinieri station: Trezzo
Carabinieri company: Vimercate

Parish churches

  • SS. Gervaso and Protaso in Trezzo
  • S. Maria Assunta in Concesa

Providers of public services

Methane gas: Gelsia Aeb
Water: Amiacque
Waste: Cem
Tax on advertising: Tre Esse Italia Srl

Saint feast days

Patron saint (municipal offices are closed): S. Gaetano, August 7

S. Maria del Rosario - first Sunday of October 
S. Teresa - October 15 for the hamlet of Concesa and the convent of the Carmelite Friars


Statistical data year 2015: read

Population as at the census in 2011: 11.883
Resident population as at 31.12.2015: 12.063

  • Males: 5845
  • Females: 6218
  • Families: 5328
  • Cohabitations: 4 (Corpo dei Carabinieri/Communities/Nuns/Friars)

Other information

Origin of the name: in the Celtic language, expressions such as «Trecc» and «Tracc» mean ‘promontory’ or ‘high and fortified place’. This is confirmed by the natural configuration of Trezzo that (as some excavations attest) once stood on the plateau west of the town.

Name of the inhabitants: Trezzesi and Concesini 

Heraldry of the municipal coat of arms: The coat of arms was approved in 1929, with the following description: "Di rosso, alla cinta merlata alla ghibellina, con torre a sinistra, il tutto d’argento, la cinta murata ed aperta a destra di nero, con un cane uscente dalla porta, pure d’argento". 

The coat of arms was adapted to the title of City with a graphic restyling, by resolution no. 129 on Sectember 10, 2008.  

Choices of the renewal
See the new coat of arms