维基引用2011年人口普查结果：
“According to the 2011 National Household Survey, 89.3% of Markham's residents are Canadian citizens, and about 14.5% of residents are recent immigrants (from 2001 to 2011). The racial make up of Markham is; East Asian (39.7%), White (27.5%), South Asian (19.1%), Southeast Asian (3.9%), Black (3.2%), West Asian & Arab (3.2%), Latin American (0.5%), Aboriginal (0.2%), and 1.9% of the population is multiracial while the rest of the population (0.7%) is of another group. Markham has the highest visible minority population of any major Canadian city (over 100,000 residents) at 72.3%, and is one of eight major cities with no majority racial group.”
Religiously speaking, 29.9% of Markham's population does not affiliate with any religion. For those who do, the religious make up is Christian (44.1%), Hindu (10.1%), Muslim (7.3%), Buddhist (4.4%), Jewish (2.4%) and Sikh (1.4%). The rest fall into another category.
