A total of 205,693 people attended the Mount Panorama event, a one percent increase over 2016's spectator figures.
The 2017 figure is bettered only by the 50th-anniversary race in 2012 which attracted 207,205 fans.
The improved spectator numbers come in the face of a sodden Sunday, which boasted a crowd of 56,042.
“This event just gets better each year,” Supercars CEO James Warburton said.
“It is the biggest event in New South Wales and one of the largest in the country every year.”
This year's race also attracted a sizeable television audience with an average audience of 1.897 million across the mammoth seven hours spectacle, peaking at 2.746 million over FOX Sports, Network TEN and WIN TV.