Saint-Paul is the second-largest commune in the French overseas département of Réunion. It is located on the extreme west side of the island of Réunion. In the 1999 census, Saint-Paul had a population of 87,712. It reached 100,000 in November 2006. The commune has a land area of 241.28 km² (93.159 sq mi). Until 1999, near Saint Paul there was the 428 metres tall mast OMEGA Chabrier transmitter.

Saint-Denis is a commune in the northern suburbs of Paris, France. It is located 9.4 kilometres (5.8 miles) from the centre of Paris. Saint-Denis is a sous-préfecture of the Seine-Saint-Denis département, being the seat of the Arrondissement of Saint-Denis. Saint-Denis is home to the royal necropolis of Saint Denis Basilica and was also the location of the associated abbey. It is also home to France's national stadium, Stade de France, built for the 1998 FIFA World Cup. Saint-Denis is a formerly industrial suburb currently reconverting its economic base. Many of the residents are Muslim immigrants from former French colonies.

Le Tampon is the fourth-largest commune in the French overseas département of Réunion. It is located on the south-central part of the island of Réunion, adjacent to Saint-Pierre. In the 1999 census, Le Tampon had a population of 60,323. The commune has a land area of 165.43 km² (63.873 sq mi).

Saint-Pierre is the third-largest commune in the French overseas département of Réunion. It is located on the southwest side of the island of Réunion. In the 1999 census, Saint-Pierre had a population of 68,915. The commune has a land area of 95.99 km² (37.062 sq mi). The agglomeration of Saint-Pierre, including the neighbouring commune of Le Tampon, has a total population of 129,238 — the second-largest in Réunion.