Communauté d'agglomération Troyes Champagne Métropole is the communauté d'agglomération, an intercommunal structure, centred on the city of Troyes. It is located in the Aube department, in the Grand Est region, northeastern France. It was created in January 2017 by the merger of the former Communauté d'agglomération du Grand Troyes with 3 former communautés de communes and 6 other communes. Its area is 889.6 km2. Its population was 172,329 in 2018, of which 61,996 in Troyes proper.