Mexico City
2,134 km²
San Salvador
264 km²
City Map Compare/Mexico City vs San Salvadorvs
vs
5 km
Mexico City covers 2,134 km² of contiguous built-up land, 8.1× the built-up area of San Salvador (264 km²).
| Mexico City | San Salvador | |
|---|---|---|
| Urban area | Mexico City | San Salvador |
| Population (2025) | 17.6 million | 1.62 million |
| Built-up area | 2,134 km² | 264 km² |
| Density | 8,266 /km² | 6,120 /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.