The 4 arrondissements of the Ardennes department are:
- Arrondissement of Charleville-Mézières, (prefecture of the Ardennes department: Charleville-Mézières) with 17 cantons and 160 communes. The population of the arrondissement was 175,374 in 1990, and was 171,608 in 1999, a decrease of 2.15%.
- Arrondissement of Rethel, (subprefecture: Rethel) with 6 cantons and 101 communes. The population of the arrondissement was 34,213 in 1990, and was 33,951 in 1999, a decrease of 0.77%.
- Arrondissement of Sedan, (subprefecture: Sedan) with 6 cantons and 79 communes. The population of the arrondissement was 63,614 in 1990, and was 62,096 in 1999, a decrease of 2.39%.
- Arrondissement of Vouziers, (subprefecture: Vouziers) with 8 cantons and 123 communes. The population of the arrondissement was 23,156 in 1990, and was 22,475 in 1999, a decrease of 2.94%.
