"In addition to his ennoblement, Loubat was a member of the Institut de France and Academie des Inscriptions et Belles Lettres, a Commandeur of the Légion d'honneur, and a member of the Union Club, Knickerbocker Club, and New York Yacht Club.Also, he was a member of the New York and Massachusetts Historical Societies, the American Geographical Society, the American Numismatic Society, and the Hispanic Society of America, among others.