Rio das Ostras Population 2026
Rio das Ostras has a population of 168,099, making it the #172 biggest city in 🇧🇷 Brazil, located in Rio de Janeiro. Roughly 0.1% of Brazil's population lives here. It is about 74× smaller than São Paulo, the country's biggest city.
Population (city proper)
168,099
Rank in Brazil
#172
Coordinates
22.53°S, 41.95°W
~11 m elevation · America/Sao_Paulo
Distance to capital (Brasília)
978 km
607 miles, straight line
Other big cities in Rio de Janeiro
| City | Population | Rank in Brazil |
|---|---|---|
| Rio de Janeiro | 6,747,815 | #2 |
| Nova Iguaçu | 823,302 | #20 |
| Duque de Caxias | 818,329 | #21 |
| Campos dos Goytacazes | 511,168 | #40 |
| São João de Meriti | 466,536 | #45 |
| Belford Roxo | 466,096 | #46 |
| Niterói | 456,456 | #48 |
| Volta Redonda | 279,898 | #95 |
Cities near Rio das Ostras
- Macaé143,029 people · ~23 km away
- Armação dos Búzios42,442 people · ~25 km away
- Casimiro de Abreu48,563 people · ~27 km away
- São Pedro da Aldeia110,556 people · ~38 km away
- Cabo Frio238,166 people · ~41 km away
- Iguaba Grande29,577 people · ~45 km away
FAQ
What is the population of Rio das Ostras?
Rio das Ostras has a population of 168,099 (city proper, latest official figure via GeoNames), making it the #172 biggest city in Brazil.
What region is Rio das Ostras in?
Rio das Ostras is located in Rio de Janeiro, Brazil.
Is Rio das Ostras the capital of Brazil?
No, the capital of Brazil is Brasília, about 978 km away.
Sources & notes
Population refers to the city proper (municipal boundaries), not the metropolitan area. Source: GeoNames (CC BY 4.0), retrieved 2026-07-07. Country data: UN World Population Prospects 2024.