Since 1985, Bussy-Saint-Georges has been integrated into the perimeter of the new town plan of Marne-la-Vallée and received a total of 180.50 hectares as additional territories coming from the nearest towns (Bussy-Saint-Martin, Collégien, Ferrières).
Sejak 1985, Bussy Saint-Georges telah digabungkan ke dalam kota baru Marne-la-Vallée dan menerima 180.5 hektare teritori tambahan dari kota-kota terdekat (Bussy-Saint-Martin, Collégien, Ferrières).