Delhi
2,139 km²
Islamabad–Rawalpindi
550 km²
Delhi covers 2,139 km² of contiguous built-up land, 3.9× the built-up area of Islamabad–Rawalpindi (550 km²).
| Delhi | Islamabad–Rawalpindi | |
|---|---|---|
| Urban area | Delhi | Islamabad–Rawalpindi |
| Population (2025) | 31.4 million | 4.91 million |
| Built-up area | 2,139 km² | 550 km² |
| Density | 14,690 /km² | 8,934 /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.