The Devon side are expected to bring 3,000 travelling fans which will fill the whole of the Stratton Bank.
So far the Town End is also on the verge of selling out, and tickets are selling well for the Nationwide and Arkells Stands with seats in the middle sections already sold out.
Swindon have broken to 10,000 barrier at the County Ground twice this season, with 10,573 watching the first game of the season against Sheffield Wednesday, and 10,029 watching the last home game against QPR 3 weeks ago.