Which has higher population in the largest city, Sierra Leone or Tanzania, United Republic of?

Sierra Leone, at 34.3% against 32.9% in Tanzania, United Republic of as of 2025.

How many years of comparable data are there for Sierra Leone and Tanzania, United Republic of?

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.

Sierra Leone vs Tanzania, United Republic of: Population in the largest city

Sierra Leone

34.3%

in 2025

Tanzania, United Republic of

32.9%

in 2025

Sierra Leone rank

62nd

Tanzania, United Republic of rank

65th

Population in the largest city over time

Sierra Leone
Tanzania, United Republic of

How they compare

Sierra Leone currently reports 34.3% against 32.9% in Tanzania, United Republic of, a difference of 1.4%.

The two have swapped places 1 time across 66 shared years of data; in 1960 it was Tanzania, United Republic of ahead.

Sierra Leone ranks 62nd and Tanzania, United Republic of ranks 65th of 153 countries.

Across the 7 decades both report, Sierra Leone averaged higher in 5 and Tanzania, United Republic of in 2.

Head to head by decade

Decade	Sierra Leone	Tanzania, United Republic of	Difference	Ahead
1960s	29.7%	39.9%	10.1%	Tanzania, United Republic of
1970s	33.8%	34.1%	0.3%	Tanzania, United Republic of
1980s	38.8%	29.9%	8.9%	Sierra Leone
1990s	41.4%	29.8%	11.7%	Sierra Leone
2000s	39.8%	30.1%	9.6%	Sierra Leone
2010s	36.5%	31.4%	5.1%	Sierra Leone
2020s	34.7%	32.8%	1.9%	Sierra Leone

Averages of every year both report within each decade.

Frequently asked questions

Which has higher population in the largest city, Sierra Leone or Tanzania, United Republic of?: Sierra Leone, at 34.3% against 32.9% in Tanzania, United Republic of as of 2025.
What is the difference in population in the largest city between Sierra Leone and Tanzania, United Republic of?: 1.4%, with Sierra Leone ahead.
How many years of comparable data are there for Sierra Leone and Tanzania, United Republic of?: 66 years are reported by both, from 1960 to 2025.
How do Sierra Leone and Tanzania, United Republic of rank globally for population in the largest city?: Sierra Leone ranks 62nd and Tanzania, United Republic of ranks 65th 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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Sierra Leone vs Tanzania, United Republic of: Population in the largest city. Statizoid, drawing on World Urbanization Prospects 2018, United Nations (UN). Retrieved 16 September 2026, from https://urban.statizoid.com/compare/population-in-the-largest-city-percent-of-urban-population/sierra-leone/tanzania/

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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.