Hillah
214 km²
Tehran
825 km²
Tehran covers 825 km² of contiguous built-up land, 3.9× the built-up area of Hillah (214 km²).
| Hillah | Tehran | |
|---|---|---|
| Urban area | Hillah | Tehran |
| Population (2025) | 1.03 million | 9.36 million |
| Built-up area | 214 km² | 825 km² |
| Density | 4,818 /km² | 11,349 /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.