This data briefing summarises the main findings from the 2004-05 Alcohol and Other Drug Treatment Services (AODTS) NMDS data for Victoria. Throughout this briefing, data from Victoria are presented along with 2004-05 national AODTS-NMDS data. Highlights include: 136 government-funded alcohol and other drug treatment agencies and outlets provided 46,369 'closed treatment episodes'; one-third (33%) of closed treatment episodes were for clients aged 20-29 years and more than one-quarter (28%) were for clients aged 30-39 years; and male clients accounted for close to two-thirds (64%) of all closed treatment episodes.