how much did twitter grow in the last 5 years 9:48 AM / Sumit Roy / The above chart shows the monthly active Twitter users as of Q1, 2015, Twitter averaged at 300 million monthly active users as of q1,2015. At the beginning of the 2014, Twitter had surpassed 255 MAU per quarter. Tweet Like It Google + Email ThisBlogThis!Share to TwitterShare to Facebook