Gambling harm disrupts the health and wellbeing of the individuals, as well as families, communities and societies around them. Despite the growing recognition that gambling harms are socially and geographically uneven in its occurrence and impacts, there is limited empirical knowledge about the factors underlying the disparities. Here, w e quantitatively profile nationwide gambling survey using series of small area geodemographic data. Results from this granular analysis are synthesized to devise a composite indicator of gambling risk and vulnerability that can be mapped to provide new insights into public health strategies to tackling gambling harms in a more effective manner.