How many years of comparable data are there for Japan and Sri Lanka?

34 years are reported by both, from 1990 to 2023.

Where does this data come from?

Statizoid (derived), published as Population (UN estimates and projections), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

Japan vs Sri Lanka: Population (UN estimates and projections), per square kilometre

Japan

0.3014 units per square kilometre

in 2023

Sri Lanka

0.2883 units per square kilometre

in 2023

Japan rank

19th

Sri Lanka rank

22nd

Population (UN estimates and projections), per square kilometre over time

Japan
Sri Lanka

How they compare

Japan currently reports 0.3014 units per square kilometre against 0.2883 units per square kilometre in Sri Lanka, a difference of 0.0131 units per square kilometre.

Across all 34 years both countries report, Japan has been ahead every year.

Japan ranks 19th and Sri Lanka ranks 22nd of 186 countries.

Japan has averaged higher in every one of the 4 decades both report.

Head to head by decade

Decade	Japan	Sri Lanka	Difference	Ahead
1990s	0.2887 units per square kilometre	0.1964 units per square kilometre	0.0924 units per square kilometre	Japan
2000s	0.302 units per square kilometre	0.2373 units per square kilometre	0.0647 units per square kilometre	Japan
2010s	0.3046 units per square kilometre	0.2617 units per square kilometre	0.0429 units per square kilometre	Japan
2020s	0.3028 units per square kilometre	0.284 units per square kilometre	0.0188 units per square kilometre	Japan

Averages of every year both report within each decade.

Frequently asked questions

Which has higher population (un estimates and projections), per square kilometre, Japan or Sri Lanka?: Japan, at 0.3014 units per square kilometre against 0.2883 units per square kilometre in Sri Lanka as of 2023.
What is the difference in population (un estimates and projections), per square kilometre between Japan and Sri Lanka?: 0.0131 units per square kilometre, with Japan ahead.
How many years of comparable data are there for Japan and Sri Lanka?: 34 years are reported by both, from 1990 to 2023.
How do Japan and Sri Lanka rank globally for population (un estimates and projections), per square kilometre?: Japan ranks 19th and Sri Lanka ranks 22nd of 186 countries.
Where does this data come from?: Statizoid (derived), published as Population (UN estimates and projections), per square kilometre. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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Japan vs Sri Lanka: Population (UN estimates and projections), per square kilometre. Statizoid, drawing on Statizoid (derived). Retrieved 21 September 2026, from https://gender.statizoid.com/compare/population-un-estimates-and-projections-per-square-kilometre/japan/sri-lanka/

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<a href="https://gender.statizoid.com/compare/population-un-estimates-and-projections-per-square-kilometre/japan/sri-lanka/">Japan vs Sri Lanka: Population (UN estimates and projections), per square kilometre</a> — Statizoid

About this data

Indicator: Population (UN estimates and projections), per square kilometre
Unit: units per square kilometre
Source: Statizoid (derived)
Licence: Derived by Statizoid from the sources named on the page
Coverage: 189 places, 6,278 data points, 1990–2023
Last refreshed: 06 September 2026

Population (UN estimates and projections) divided by Land area (sq. km), matched on country and year. Neither publisher issues this ratio as a series; it is computed here from both.