The arrondissement of Le Blanc was created in 1800.[4] At the January 2017 reorganisation of the arrondissements of Indre, it gained the commune La Pérouille from the arrondissement of Châteauroux.[5]
As a result of the reorganisation of the cantons of France which came into effect in 2015, the borders of the cantons are no longer related to the borders of the arrondissements. The cantons of the arrondissement of Le Blanc were, as of January 2015:[6]