Rio das Ostras

Rio das Ostras sits along the Atlantic coast in Rio de Janeiro state, combining beaches with rivers and lagoons at low elevation. The built-up area spreads between the coastal highway and the quieter neighborhoods inland.

The area gained official independence on April 10, 1992, separating administratively from Casimiro de Abreu. The following decades brought population growth through oil industry workers and new residential areas.

The city takes its name from the oyster beds that once lined the river mouth near the shore. Local fishermen still sell their catch at small stalls near the docks each morning.

The city stretches several kilometers along the coast, so a car or bus helps when moving between different beach sections. Most services and shops concentrate in the area around the central avenue.

A small river cuts through the center and reaches the ocean near the main avenue, so you see both fresh water and salt water on a single walk. The bridges over this river connect the two halves of the city and serve as popular meeting spots in late afternoon.

Location: Rio de Janeiro

Shares border with: Casimiro de Abreu, Macaé

GPS coordinates: -22.52694,-41.94500

Latest update: December 13, 2025 19:36