Japan’s National Police Agency reported that up to 213 yakuza groups were either broken up by police or dissolved on their own in 2013. The number of yakuza gang members in these groups was a combined 1,336 members.
In addition to these members, around 600 members quit and left organized crime activities in Japan in 2012.
The largest yakuza group in Japan, the Yamaguchi-gumi, had a reported 27,700 members at the end of 2012.
Source: Kenji Ogata, “Police beef up career support for former yakuza,” Asahi Shimbun, May 7, 2013.