Louis Blanc opened on 23 November 1910, 18 days after the commissioning of the first section of line 7 between Opéra and Porte de la Villette with the branch from Louis Blanc to Pré Saint-Gervais only opening on 18 January 1911 due to difficulties during its construction.

As part of the "Un métro + beau" programme by the RATP, the station was renovated and modernised on 11 July 2014.

The upper station is served, from the central track, by the trains of line 7 running to Mairie d'Ivry or Villejuif - Louis Aragon and, from the side track, by the trains of line 7 bis from or to Pré-Saint-Gervais, of which it previously provided only arrivals.

The lower station is served, from the side track, by the trains of line 7 to La Courneuve, while its central track, previously ensuring the departure of trains of line 7 bis towards Pré-Saint-Gervais, is no longer used in normal service.

Thus, the lighting canopies are supported by curved hangers in the form of a scythe are yellow and green respectively.