What is the difference in population density between South Korea and Sierra Leone?

3.1 people per km², with South Korea ahead.

How many years of comparable data are there for South Korea and Sierra Leone?

318 years are reported by both, from 1000 to 2100.

Where does this data come from?

HYDE (2023); Gapminder (2022); UN WPP (2024); UN FAO (2024) – with major processing by Our World in Data, published as Population density. Statizoid refreshes it automatically from the source and publishes the full history for both places.

South Korea vs Sierra Leone: Population density

South Korea

223.86 people per km²

in 2100

Sierra Leone

220.76 people per km²

in 2100

South Korea rank

69th

Sierra Leone rank

71st

Population density over time

South Korea
Sierra Leone

How they compare

South Korea currently reports 223.86 people per km² against 220.76 people per km² in Sierra Leone, a difference of 3.1 people per km².

Across all 318 years both countries report, South Korea has been ahead every year.

South Korea ranks 69th and Sierra Leone ranks 71st of 235 countries.

South Korea has averaged higher in every one of the 48 decades both report.

Head to head by decade

Decade	South Korea	Sierra Leone	Difference	Ahead
1000s	16.39 people per km²	0.0544 people per km²	16.34 people per km²	South Korea
1100s	19.67 people per km²	0.0604 people per km²	19.61 people per km²	South Korea
1200s	26.23 people per km²	0.0671 people per km²	26.16 people per km²	South Korea
1300s	19.67 people per km²	0.0746 people per km²	19.6 people per km²	South Korea
1400s	22.95 people per km²	0.0828 people per km²	22.87 people per km²	South Korea
1500s	26.23 people per km²	0.092 people per km²	26.14 people per km²	South Korea
1600s	32.79 people per km²	0.1023 people per km²	32.68 people per km²	South Korea
1700s	40.98 people per km²	0.1136 people per km²	40.87 people per km²	South Korea
1710s	45.07 people per km²	0.1263 people per km²	44.94 people per km²	South Korea
1720s	48.29 people per km²	0.1403 people per km²	48.14 people per km²	South Korea
1730s	51.73 people per km²	0.1559 people per km²	51.58 people per km²	South Korea
1740s	55.43 people per km²	0.1732 people per km²	55.26 people per km²	South Korea
1750s	59.39 people per km²	0.1924 people per km²	59.2 people per km²	South Korea
1760s	63.63 people per km²	0.2138 people per km²	63.42 people per km²	South Korea
1770s	68.18 people per km²	0.2376 people per km²	67.94 people per km²	South Korea
1780s	73.05 people per km²	0.264 people per km²	72.78 people per km²	South Korea
1790s	78.26 people per km²	0.2933 people per km²	77.97 people per km²	South Korea
1800s	96.26 people per km²	11 people per km²	85.26 people per km²	South Korea
1810s	96.26 people per km²	11 people per km²	85.26 people per km²	South Korea
1820s	96.49 people per km²	10.97 people per km²	85.52 people per km²	South Korea
1830s	97 people per km²	10.9 people per km²	86.1 people per km²	South Korea
1840s	97.51 people per km²	10.83 people per km²	86.69 people per km²	South Korea
1850s	98.08 people per km²	11.06 people per km²	87.02 people per km²	South Korea
1860s	98.7 people per km²	11.73 people per km²	86.97 people per km²	South Korea
1870s	99.06 people per km²	12.57 people per km²	86.5 people per km²	South Korea
1880s	99.11 people per km²	13.54 people per km²	85.57 people per km²	South Korea
1890s	99.15 people per km²	14.58 people per km²	84.57 people per km²	South Korea
1900s	99.9 people per km²	15.7 people per km²	84.2 people per km²	South Korea
1910s	108.09 people per km²	16.84 people per km²	91.26 people per km²	South Korea
1920s	126.51 people per km²	18.65 people per km²	107.86 people per km²	South Korea
1930s	145.81 people per km²	21.54 people per km²	124.28 people per km²	South Korea
1940s	177.83 people per km²	25.21 people per km²	152.62 people per km²	South Korea
1950s	225.9 people per km²	29.26 people per km²	196.64 people per km²	South Korea
1960s	297.15 people per km²	34 people per km²	263.16 people per km²	South Korea
1970s	362.42 people per km²	40.9 people per km²	321.53 people per km²	South Korea
1980s	418.47 people per km²	50.19 people per km²	368.28 people per km²	South Korea
1990s	464.01 people per km²	58.45 people per km²	405.56 people per km²	South Korea
2000s	489 people per km²	74.05 people per km²	414.95 people per km²	South Korea
2010s	517.71 people per km²	96.51 people per km²	421.2 people per km²	South Korea
2020s	529.18 people per km²	120.88 people per km²	408.3 people per km²	South Korea
2030s	515.71 people per km²	145.08 people per km²	370.63 people per km²	South Korea
2040s	485.25 people per km²	167.89 people per km²	317.37 people per km²	South Korea
2050s	439.04 people per km²	187.75 people per km²	251.29 people per km²	South Korea
2060s	383.02 people per km²	203.33 people per km²	179.7 people per km²	South Korea
2070s	330.36 people per km²	214.27 people per km²	116.09 people per km²	South Korea
2080s	284.17 people per km²	220.13 people per km²	64.03 people per km²	South Korea
2090s	243.4 people per km²	221.56 people per km²	21.84 people per km²	South Korea
2100s	223.86 people per km²	220.76 people per km²	3.1 people per km²	South Korea

Averages of every year both report within each decade.

Frequently asked questions

Which has higher population density, South Korea or Sierra Leone?: South Korea, at 223.86 people per km² against 220.76 people per km² in Sierra Leone as of 2100.
What is the difference in population density between South Korea and Sierra Leone?: 3.1 people per km², with South Korea ahead.
How many years of comparable data are there for South Korea and Sierra Leone?: 318 years are reported by both, from 1000 to 2100.
How do South Korea and Sierra Leone rank globally for population density?: South Korea ranks 69th and Sierra Leone ranks 71st of 235 countries.
Where does this data come from?: HYDE (2023); Gapminder (2022); UN WPP (2024); UN FAO (2024) – with major processing by Our World in Data, published as Population density. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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South Korea vs Sierra Leone: Population density. Statizoid, drawing on HYDE (2023); Gapminder (2022); UN WPP (2024); UN FAO (2024) – with major processing by Our World in Data. Retrieved 22 September 2026, from https://population.statizoid.com/compare/population-density/korea-rep/sierra-leone/

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<a href="https://population.statizoid.com/compare/population-density/korea-rep/sierra-leone/">South Korea vs Sierra Leone: Population density</a> — Statizoid

About this data

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: 18 September 2026

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