The number of people visiting Watch every month increased to more than 720 million, up 80% from the 400 million reported in December.
The number of daily visitors rose to 140 million, up 87%, from 75 million in December.
Facebook counts visitors only after they have spent at least one minute on a Watch video, a sign that the viewing is intentional.
The average time a visitor spent with Watch rose to 26 minutes, up 30%, from 20 minutes.
The growth in viewers suggests Facebook has had some success luring visitors to its video project, which went global less than a year ago.
Facebook Watch streams original shows, such as Huda Boss, Five Points, Sacred Lies, and Sorry For Your Loss.