Thomas Degos wa born 28 December 1971 in Neuilly-sur-Seine, Hauts-de-Seine, France.
From 1989 to 1991, he attended a preparatory class for the Grandes Ecoles at Stanislas (hypokhâgne S and Khâgne S).
[4] He was admitted to Sciences Po Aix[5] in 1992, public service section, and left in 1994.
[7] He was admitted the same year 1996 to the École nationale d'administration, in the Cyrano de Bergerac promotion (1997-1999).
[8] He joined the body of civil administrators, sub-prefect, director of the cabinet of the prefect of Pyrénées-Orientales.