They play in the Mid-Western division of the Greater Ontario Junior Hockey League.

The Elmira Sugar Kings' 1st season was in 1971–72, but in 1973, the Sugar Kings entered the Southwestern Junior "B" Hockey League.

In that first Junior "B" season, the Sugar Kings won the league championship.

But throughout the late 1990s and early 2000s, the Sugar Kings were one of the most dominant teams in Canadian junior hockey.

In 1997, 1998, 2001, 2002, 2008 and 2011 the Kings reigned as Mid-Western "B" champions, winning the Sutherland Cup as Ontario Hockey Association Junior B champions in 1997, 2001, 2011, 2017.