These maps show, with data classified by equal intervals, the distribution of the total number of reported adult drug users by district of residence from 1998 to 2007. Adult drug users refer to those who are 21 years old or above. Data were obtained from the Central Registry of Drug Abuse (CRDA), Narcotics Division, Security Bureau, Hong Kong Special Administrative Region Government.
From 1998 to 2007, the number of reported adult drug users declined slowly. Central and Western, Wan Chai, Sai Kung and the Islands were the districts with low number of reported cases, while Shum Shui Po and Yau Tsim Mong districts had a generally higher number over the years.