Iran, Islamic Republic of vs United Kingdom of Great Britain and Northern Ireland: Population in urban agglomerations of more than 1 million
Population in urban agglomerations of more than 1 million over time
- Iran, Islamic Republic of
- United Kingdom of Great Britain and Northern Ireland
How they compare
Iran, Islamic Republic of currently reports 23.31 million against 19.05 million in United Kingdom of Great Britain and Northern Ireland, a difference of 4.26 million.
That makes Iran, Islamic Republic of's figure about 1.2 times United Kingdom of Great Britain and Northern Ireland's.
The two have swapped places 1 time across 66 shared years of data; in 1960 it was United Kingdom of Great Britain and Northern Ireland ahead.
Iran, Islamic Republic of ranks 18th and United Kingdom of Great Britain and Northern Ireland ranks 21st of 121 countries.
Across the 7 decades both report, Iran, Islamic Republic of averaged higher in 3 and United Kingdom of Great Britain and Northern Ireland in 4.
Head to head by decade
| Decade | Iran, Islamic Republic of | United Kingdom of Great Britain and Northern Ireland | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 4.21 million | 16.16 million | 11.94 million | United Kingdom of Great Britain and Northern Ireland |
| 1970s | 7.01 million | 15.26 million | 8.25 million | United Kingdom of Great Britain and Northern Ireland |
| 1980s | 11.03 million | 14.62 million | 3.58 million | United Kingdom of Great Britain and Northern Ireland |
| 1990s | 14.33 million | 14.85 million | 521,010 | United Kingdom of Great Britain and Northern Ireland |
| 2000s | 17.19 million | 15.59 million | 1.60 million | Iran, Islamic Republic of |
| 2010s | 20.28 million | 17.20 million | 3.09 million | Iran, Islamic Republic of |
| 2020s | 22.59 million | 18.64 million | 3.95 million | Iran, Islamic Republic of |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher population in urban agglomerations of more than 1 million, Iran, Islamic Republic of or United Kingdom of Great Britain and Northern Ireland?
- Iran, Islamic Republic of, at 23.31 million against 19.05 million in United Kingdom of Great Britain and Northern Ireland as of 2025.
- What is the difference in population in urban agglomerations of more than 1 million between Iran, Islamic Republic of and United Kingdom of Great Britain and Northern Ireland?
- 4.26 million, with Iran, Islamic Republic of ahead.
- How many years of comparable data are there for Iran, Islamic Republic of and United Kingdom of Great Britain and Northern Ireland?
- 66 years are reported by both, from 1960 to 2025.
- How do Iran, Islamic Republic of and United Kingdom of Great Britain and Northern Ireland rank globally for population in urban agglomerations of more than 1 million?
- Iran, Islamic Republic of ranks 18th and United Kingdom of Great Britain and Northern Ireland ranks 21st of 121 countries.
- Where does this data come from?
- World Urbanization Prospects 2018, United Nations (UN), published as Population in urban agglomerations of more than 1 million. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Population in urban agglomerations of more than one million is the country's population living in metropolitan areas that in 2018 had a population of more than one million people.