Japan vs Sierra Leone: Population density

Japan

210.83 people per km²

in 2100

Sierra Leone

220.76 people per km²

in 2100

Japan rank

73rd

Sierra Leone rank

71st

Population density over time

Sierra Leone currently reports 220.76 people per km² against 210.83 people per km² in Japan, a difference of 9.93 people per km².

The two have swapped places 1 time across 318 shared years of data; in 1000 it was Japan ahead.

Japan ranks 73rd and Sierra Leone ranks 71st of 234 countries.

Indicator: Population density
Unit: people per km²
Source: HYDE (2023); Gapminder (2022); UN WPP (2024); UN FAO (2024) – with major processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 235 places, 68,610 data points, 1000–2100
Last refreshed: 07 August 2026

Population per square kilometer by country, available from 10,000 BCE to 2100, based on data and estimates from different sources.