From 2,997 active users across all lemmy instances at the beginning of June, the number increased to 52,797 by June 30th. Source.
An active user on Lemmy is "someone who has posted or commented on our instance or community within the last given time frame.” Source. That means lurkers are not counted as active users.
We’re really building something here!
I don’t want to sound like a cynic but so was reddit in its early years. We were all rallying for a cause on the great digg migration. It felt great to be part of that movement (or whatever you want to call that). I do hope Lemmy keeps this spirit up for as long as it can.