The thirty-five teams of the North, South, East, and West divisions competed in a 49-game schedule.
Come February, the top eight teams of each division competed for the Frank L. Buckland Trophy, the OJHL championship.
The DHC was hosted and won by the Georgetown Raiders who moved to the 2005 Royal Bank Cup but lost in the semi-final.
Note: GP = Games played; W = Wins; L = Losses; OTL = Overtime losses; SL = Shootout losses; GF = Goals for; GA = Goals against; PTS = Points; x = clinched playoff berth; y = clinched division title; z = clinched conference title Teams listed on the official league website.
Round Robin Semi-final Note: GP = Games played; G = Goals; A = Assists; Pts = Points; PIM = Penalty minutes