There were 51 000 000 Facebook users in United Kingdom in December 2020, which accounted for 73.9% of its entire population.
The majority of them were women - 52.9%.
People aged 25 to 34 were the largest user group (12 800 000).
The highest difference between men and women occurs within people aged 55 to 64, where women lead by 2 300 000.