An almost 2,500-strong army of Reds fans will back their side this weekend at Chesterfield.
A further 441 tickets were snapped up by Barnsley fans after the initial allocation of 1992 were sold.
Barnsley head to the Proact Stadium this Saturday for a 3pm kick-off with 2,433 Reds fans making the trip.
The Club will not receive any more tickets for the game.
If you haven't got a ticket, you can still feel part of the action by listening to every kick on Barnsley Player, followed by a full match replay.