Japan vs United Kingdom: Number of children under 5

Japan

4.14 million people

in 2023

United Kingdom

3.59 million people

in 2023

Japan rank

37th

United Kingdom rank

39th

Number of children under 5 over time

Japan currently reports 4.14 million people against 3.59 million people in United Kingdom, a difference of 550,560 people.

That makes Japan's figure about 1.2 times United Kingdom's.

Across all 74 years both countries report, Japan has been ahead every year.

Japan ranks 37th and United Kingdom ranks 39th of 236 countries.

Indicator: Number of children under 5
Unit: people
Source: UN, World Population Prospects (2024) – processed by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 236 places, 17,464 data points, 1950–2023
Last refreshed: 07 August 2026

The total population, measured on 1 July of the year shown. This only includes people aged 0-4.