Which has higher population in the largest city, IDA only or Puerto Rico?

Puerto Rico, at 81.0% against 31.2% in IDA only as of 2025.

How many years of comparable data are there for IDA only and Puerto Rico?

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.

IDA only vs Puerto Rico: Population in the largest city

IDA only

31.2%

in 2025

Puerto Rico

81.0%

in 2025

IDA only rank

3rd

Puerto Rico rank

5th

Population in the largest city over time

IDA only
Puerto Rico

How they compare

Puerto Rico currently reports 81.0% against 31.2% in IDA only, a difference of 49.8%.

That makes Puerto Rico's figure about 2.6 times IDA only's.

Across all 66 years both countries report, Puerto Rico has been ahead every year.

IDA only ranks 3rd and Puerto Rico ranks 5th of 43 groups.

Puerto Rico has averaged higher in every one of the 7 decades both report.

Head to head by decade

Decade	IDA only	Puerto Rico	Difference	Ahead
1960s	32.0%	57.6%	25.6%	Puerto Rico
1970s	33.1%	58.2%	25.1%	Puerto Rico
1980s	32.8%	67.4%	34.6%	Puerto Rico
1990s	33.5%	73.0%	39.4%	Puerto Rico
2000s	32.4%	69.7%	37.4%	Puerto Rico
2010s	30.8%	74.5%	43.7%	Puerto Rico
2020s	31.1%	80.4%	49.3%	Puerto Rico

Averages of every year both report within each decade.

Frequently asked questions

Which has higher population in the largest city, IDA only or Puerto Rico?: Puerto Rico, at 81.0% against 31.2% in IDA only as of 2025.
What is the difference in population in the largest city between IDA only and Puerto Rico?: 49.8%, with Puerto Rico ahead.
How many years of comparable data are there for IDA only and Puerto Rico?: 66 years are reported by both, from 1960 to 2025.
How do IDA only and Puerto Rico rank globally for population in the largest city?: IDA only ranks 3rd and Puerto Rico ranks 5th of 43 groups.
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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IDA only vs Puerto Rico: Population in the largest city. Statizoid, drawing on World Urbanization Prospects 2018, United Nations (UN). Retrieved 17 September 2026, from https://urban.statizoid.com/compare/population-in-the-largest-city-percent-of-urban-population/ida-only/puerto-rico-us/

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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.