Communauté d'agglomération Lannion-Trégor Communauté is an intercommunal structure, centred on the city of Lannion. It is located in the Côtes-d'Armor department, in the Brittany region, western France. It was created in January 2017. Its seat is in Lannion. Its area is 904.4 km2. Its population was 99,607 in 2017, of which 19,880 in Lannion proper.