As expected, the 2016 Sturgis Motorcycle Rally was not nearly as large as the 75th anniversary in 2015. With all data now in, the official estimated attendance was 448,000. The official attendance estimate for the 75th Rally was 739,000. The attendance number is calculated based on several data points including tons of garbage hauled within the City, Department of Transportation vehicles counts, Mount Rushmore traffic counts, SD Sales tax collections, Sanitation fees collected and Main Street photo counts. All of these numbers were down from 2015 and many were also equal to or slightly down from the 2014 Rally.