How many years of comparable data are there for Iran, Islamic Republic of and Sri Lanka?

66 years are reported by both, from 1960 to 2025.

Where does this data come from?

World Urbanization Prospects 2018, United Nations (UN), published as Population in the largest city (% of urban population). Statizoid refreshes it automatically from the source and publishes the full history for both places.

Iran, Islamic Republic of vs Sri Lanka: Population in the largest city

Iran, Islamic Republic of

13.6%

in 2025

Sri Lanka

14.6%

in 2025

Iran, Islamic Republic of rank

138th

Sri Lanka rank

136th

Population in the largest city over time

Iran, Islamic Republic of
Sri Lanka

How they compare

Sri Lanka currently reports 14.6% against 13.6% in Iran, Islamic Republic of, a difference of 1.0%.

That makes Sri Lanka's figure about 1.1 times Iran, Islamic Republic of's.

The two have swapped places 2 times across 66 shared years of data; in 1960 it was Sri Lanka ahead.

Iran, Islamic Republic of ranks 138th and Sri Lanka ranks 136th of 153 countries.

Across the 7 decades both report, Iran, Islamic Republic of averaged higher in 3 and Sri Lanka in 4.

Head to head by decade

Decade	Iran, Islamic Republic of	Sri Lanka	Difference	Ahead
1960s	26.7%	24.6%	2.0%	Iran, Islamic Republic of
1970s	27.1%	19.2%	8.0%	Iran, Islamic Republic of
1980s	22.4%	19.0%	3.4%	Iran, Islamic Republic of
1990s	18.0%	22.2%	4.2%	Sri Lanka
2000s	15.8%	20.2%	4.4%	Sri Lanka
2010s	14.2%	14.8%	0.6%	Sri Lanka
2020s	13.7%	14.3%	0.6%	Sri Lanka

Averages of every year both report within each decade.

Frequently asked questions

Which has higher population in the largest city, Iran, Islamic Republic of or Sri Lanka?: Sri Lanka, at 14.6% against 13.6% in Iran, Islamic Republic of as of 2025.
What is the difference in population in the largest city between Iran, Islamic Republic of and Sri Lanka?: 1.0%, with Sri Lanka ahead.
How many years of comparable data are there for Iran, Islamic Republic of and Sri Lanka?: 66 years are reported by both, from 1960 to 2025.
How do Iran, Islamic Republic of and Sri Lanka rank globally for population in the largest city?: Iran, Islamic Republic of ranks 138th and Sri Lanka ranks 136th of 153 countries.
Where does this data come from?: World Urbanization Prospects 2018, United Nations (UN), published as Population in the largest city (% of urban population). Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Iran, Islamic Republic of vs Sri Lanka: Population in the largest city. Statizoid, drawing on World Urbanization Prospects 2018, United Nations (UN). Retrieved 15 September 2026, from https://urban.statizoid.com/compare/population-in-the-largest-city-percent-of-urban-population/iran-islamic-rep/sri-lanka/

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<a href="https://urban.statizoid.com/compare/population-in-the-largest-city-percent-of-urban-population/iran-islamic-rep/sri-lanka/">Iran, Islamic Republic of vs Sri Lanka: Population in the largest city</a> — Statizoid

About this data

Indicator: Population in the largest city (% of urban population)
Unit: % of urban population
Source: World Urbanization Prospects 2018, United Nations (UN)
Licence: CC BY 4.0 (World Bank Open Data)
Coverage: 196 places, 12,906 data points, 1960–2025
Last refreshed: 03 September 2026

Population in largest city is the percentage of a country's urban population living in that country's largest metropolitan area.