In 1800 the arrondissements of Caen, Bayeux, Falaise, Lisieux, Pont-l'Évêque and Vire were established. The arrondissements of Falaise and Pont-l'Évêque were disbanded in 1926.[2]
The borders of the arrondissements of Calvados were modified in January 2017:[3]
four communes from the arrondissement of Bayeux to the arrondissement of Vire
19 communes from the arrondissement of Caen to the arrondissement of Bayeux
15 communes from the arrondissement of Caen to the arrondissement of Lisieux
20 communes from the arrondissement of Caen to the arrondissement of Vire