Château Phélan Ségur lies in the commune of Saint-Estèphe in the Bordeaux region of France, neighbouring vineyards Château Calon-Ségur and Château Montrose.
The location of Château Phélan Ségur is described in relation to its neighbors, Château Calon-Ségur and Château Montrose, within the commune of Saint-Estèphe, a region known for its Bordeaux wines.