Rio de Janeiro
1,285 km²
São Luís
242 km²
City Map Compare/Rio de Janeiro vs São Luísvs
vs
5 km
Rio de Janeiro covers 1,285 km² of contiguous built-up land, 5.3× the built-up area of São Luís (242 km²).
| Rio de Janeiro | São Luís | |
|---|---|---|
| Urban area | Rio de Janeiro | São Luís |
| Population (2025) | 9.85 million | 1.27 million |
| Built-up area | 1,285 km² | 242 km² |
| Density | 7,668 /km² | 5,257 /km² |
Urban area = contiguous built-up land and the people living in it in 2025, drawn the same way for every city regardless of administrative boundaries. Source: GHSL Urban Centre Database R2024A, European Commission, Joint Research Centre (CC BY 4.0); some names adjusted to the city names people use, and country attribution follows the dataset.