There were 205 600 000 Facebook users in United States of America in December 2018, which accounted for 59.9% of its entire population.
The majority of them were women - 54.1%.
People aged 25 to 34 were the largest user group (52 000 000).
The highest difference between men and women occurs within people aged 65 and above, where women lead by 8 700 000.