The 7 arrondissements of the Pas-de-Calais department are:
- Arrondissement of Arras, with 357 communes. The population of the arrondissement was 249,961 in 2021.
- Arrondissement of Béthune, with 104 communes. The population of the arrondissement was 292,114 in 2021.
- Arrondissement of Boulogne-sur-Mer, with 74 communes. The population of the arrondissement was 157,817 in 2021.
- Arrondissement of Calais, with 52 communes. The population of the arrondissement was 152,091 in 2021.
- Arrondissement of Lens, with 50 communes. The population of the arrondissement was 369,427 in 2021.
- Arrondissement of Montreuil, with 164 communes. The population of the arrondissement was 110,907 in 2021.
- Arrondissement of Saint-Omer, with 89 communes. The population of the arrondissement was 129,124 in 2021.
The Canton of Hesdin is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 22 communes, which joined the canton of Auxi-le-Château in 2015. It had a total of 10,805 inhabitants (2012).
The arrondissement of Boulogne-sur-Mer is an arrondissement of France in the Pas-de-Calais department in the Hauts-de-France region. It has 74 communes. Its population is 157,817 (2021), and its area is 633.7 km2 (244.7 sq mi).
The arrondissement of Saint-Omer is an arrondissement of France in the Pas-de-Calais department in the Hauts-de-France region. It has 89 communes. Its population is 129,124 (2021), and its area is 813.0 km2 (313.9 sq mi).
The Arrondissement of Calais is an arrondissement of France in the Pas-de-Calais department in the Hauts-de-France region. It has 52 communes. Its population is 152,091 (2021), and its area is 593.4 km2 (229.1 sq mi).
The Canton of Heuchin is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 32 communes, which joined the canton of Saint-Pol-sur-Ternoise in 2015. It had a total of 11,001 inhabitants (2012).
The canton of Montreuil is a former canton in the Pas-de-Calais department and the Nord-Pas de Calais region. It was disbanded following the French canton reorganisation that came into effect in March 2015. It had a total of 22,203 inhabitants (2012).
The canton of Campagne-lès-Hesdin is a former canton situated in the Pas-de-Calais département and in the Nord-Pas-de-Calais region of France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 23 communes, which joined the canton of Auxi-le-Château in 2015. It had a total of 11,007 inhabitants (2012).
The Canton of Croisilles is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had a total of 12,194 inhabitants (2012).
The canton of Ardres is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had a total of 21,370 inhabitants.
The canton of Saint-Omer-Nord is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 9 communes, which joined the canton of Saint-Omer in 2015. It had a total of 15,714 inhabitants (2012).
The canton of Boulogne-sur-Mer-Nord-Est is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 5 communes, which joined the canton of Boulogne-sur-Mer-1 in 2015. It had a total of 18,864 inhabitants.
The canton of Boulogne-sur-Mer-Nord-Ouest is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 2 communes, which joined the canton of Boulogne-sur-Mer-1 in 2015. It had a total of 19,157 inhabitants.
The canton of Desvres is a canton situated in the department of the Pas-de-Calais and in the Hauts-de-France region of northern France. The canton is organised around Desvres in the arrondissement of Boulogne-sur-Mer.
The canton of Marquise is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 21 communes, which joined the canton of Desvres in 2015. It had a total of 21,997 inhabitants (2012).
The canton of Outreau is a canton situated in the department of the Pas-de-Calais and in the Hauts-de-France region of northern France.
The canton of Le Portel is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It consisted of 2 communes, which joined the canton of Boulogne-sur-Mer-2 in 2015. It had a total of 18,640 inhabitants (2012).
The canton of Samer is a former canton situated in the department of the Pas-de-Calais and in the Nord-Pas-de-Calais region of northern France. It was disbanded following the French canton reorganisation which came into effect in March 2015. It had a total of 27,775 inhabitants (2012).
The canton of Boulogne-sur-Mer-1 is an administrative division of the Pas-de-Calais department, in northern France. It was created at the French canton reorganisation which came into effect in March 2015. Its seat is in Boulogne-sur-Mer.
The canton of Boulogne-sur-Mer-2 is an administrative division of the Pas-de-Calais department, in northern France. It was created at the French canton reorganisation which came into effect in March 2015. Its seat is in Boulogne-sur-Mer.
