The Seattle Sounders are the 29th-most attended club in world football, according to a report from the International Centre for Sports Studies (CIES), an independent study center located in Neuchâtel, Switzerland.
From 2013-18, the Sounders averaged 42,797 fans per match, more than international giants Club América, AC Milan, Chelsea, Tottenham and Juventus.
The CIES Football Observatory specializes in the statistical analysis of football. It was created in 2005 by Dr. Raffaele Poli and Dr. Loïc Ravenel. CIES’ mission is to “advance the frontiers of knowledge for the sustainable development of football worldwide.”
