Alcohol sales data provide a more accurate indication of alcohol consumption than alternative methods such as population surveys. This information can be used to better understand epidemiological issues related to alcohol consumption, policy development and evaluation. Official sales records were collected for the 28 regional districts of British Columbia (BC) for 2002–2005, while homemade alcohol was estimated from survey data. Alcohol consumption rates were found to vary across geographic regions, by season, and with population level demographics. Government stores were the largest source of alcohol consumption in BC, accounting for 45.1% of total alcohol consumption in 2004. U-Brews/U-Vins accounted for 4.0%, private liquor stores accounted for 27.5% of the total, and homemade alcohol made up 4.3% of total alcohol consumption. Analysis also revealed that the average alcohol concentration in wines (12.53%) and coolers (6.77%) has been underestimated by Statistics Canada. The feasibility of developing this type of alcohol monitoring system is examined. Finally, implications for the development of targeted public health initiatives and future research are discussed.