The 20-year-old matches the ranking achieved earlier this year by Milos Raonic who also climbed to sixth. Currently Raonic is eighth.
Bouchard surpassed Carling Bassett-Seguso's Canadian record ranking of eighth in July when she moved into the top 10 for the first time, moving from No. 13 to 7. She began the year ranked 32nd and became the only player to reach at least the semi-finals in three consecutive Grand Slam events. Those were the Australian Open (lost semi), the French Open (lost semi) and Wimbledon (lost final). Bouchard also reached the fourth round (round of 16) at the U.S. Open in September.
During this season, Bouchard has won more than $3 million as she captured her first WTA title in May in Nurnberg.
Bouchard is heading for the WTA Finals in Singapore later this month, one of only eight women to make the field in the $6.5 million tournament.