United Kingdom of Great Britain and Northern Ireland vs United Kingdom: Population on 1 January by age group, sex and citizenship

United Kingdom of Great Britain and Northern Ireland
66.65 million Number
in 2019
United Kingdom
66.65 million Number
in 2019
United Kingdom of Great Britain and Northern Ireland rank
4th
United Kingdom rank
4th

Population on 1 January by age group, sex and citizenship over time

  • United Kingdom of Great Britain and Northern Ireland
  • United Kingdom
020.0M40.0M60.0M199920092019

How they compare

United Kingdom of Great Britain and Northern Ireland currently reports 66.65 million Number against 66.65 million Number in United Kingdom, a difference of 0 Number.

Across all 19 years both countries report, United Kingdom has been ahead every year.

United Kingdom of Great Britain and Northern Ireland ranks 4th and United Kingdom ranks 4th of 42 countries.

Head to head by decade

Decade United Kingdom of Great Britain and Northern Ireland United Kingdom Difference Ahead
1990s 58.61 million Number 58.61 million Number 0 Number
2000s 59.88 million Number 59.88 million Number 0 Number
2010s 64.63 million Number 64.63 million Number 0 Number

Averages of every year both report within each decade.

Frequently asked questions

Which has higher population on 1 january by age group, sex and citizenship, United Kingdom of Great Britain and Northern Ireland or United Kingdom?
United Kingdom of Great Britain and Northern Ireland, at 66.65 million Number against 66.65 million Number in United Kingdom as of 2019.
What is the difference in population on 1 january by age group, sex and citizenship between United Kingdom of Great Britain and Northern Ireland and United Kingdom?
0 Number, with United Kingdom of Great Britain and Northern Ireland ahead.
How many years of comparable data are there for United Kingdom of Great Britain and Northern Ireland and United Kingdom?
19 years are reported by both, from 1999 to 2019.
How do United Kingdom of Great Britain and Northern Ireland and United Kingdom rank globally for population on 1 january by age group, sex and citizenship?
United Kingdom of Great Britain and Northern Ireland ranks 4th and United Kingdom ranks 4th of 42 countries.
Where does this data come from?
Eurostat, published as Population on 1 January by age group, sex and citizenship. Statizoid refreshes it automatically from the source and publishes the full history for both places.

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United Kingdom of Great Britain and Northern Ireland vs United Kingdom: Population on 1 January by age group, sex and citizenship. Statizoid, drawing on Eurostat. Retrieved 15 September 2026, from https://population.statizoid.com/compare/population-on-1-january-by-age-group-sex-and-citizenship/united-kingdom/united-kingdom-2/

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About this data

Indicator
Population on 1 January by age group, sex and citizenship
Unit
Number
Source
Eurostat
Licence
CC BY 4.0 (Eurostat)
Coverage
43 places, 1,053 data points, 1998–2025
Last refreshed