Using data from PeerReach, online statistics portal Statista created the chart, below, which shows the 13 countries with the highest shares of monthly active tweeters.
PeerReach defines monthly active Twitter users as those who tweet, whereas Twitter defines them as those who log in to the service. Roughly 40% of Twitter's monthly active users actually don’t tweet, and only log in.
The largest share of monthly active users, according to PeerReach's definition, are in the U.S., with 24%. After the top 13 countries, users from every other country in the world represent the remaining 26% of monthly active Twitter users.