Iran vs United Kingdom: Population in largest city
Iran
9.73 million
in 2025
United Kingdom
9.84 million
in 2025
Iran rank
25th
United Kingdom rank
23rd
Population in largest city over time
- Iran
- United Kingdom
How they compare
United Kingdom currently reports 9.84 million against 9.73 million in Iran, a difference of 111,000.
The two have swapped places 2 times across 66 shared years of data; in 1960 it was United Kingdom ahead.
Globally, Iran ranks 25th and United Kingdom ranks 23rd of 153 countries.
Individual pages
About this data
Population in largest city is the urban population living in the country's largest metropolitan area.