Karaj
299 km²
Tehran
825 km²
City Map Compare/Karaj vs Tehranvs
vs
5 km
Tehran covers 825 km² of contiguous built-up land, 2.8× the built-up area of Karaj (299 km²).
| Karaj | Tehran | |
|---|---|---|
| Urban area | Karaj | Tehran |
| Population (2025) | 3.59 million | 9.36 million |
| Built-up area | 299 km² | 825 km² |
| Density | 11,991 /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.