Oaks Park and Westminster Ponds. The city also maintains a number of gardens and conservatories. Demographics In the 2021 Census of Population conducted by Statistics Canada, London had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of , it had a population density of in 2021. At the census metropolitan area (CMA) level in the 2021 census, the London CMA had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of , it had a population density of in 2021. Ethnicity As per the 2021 census, the most common ethnic or cultural origins in London are English (21.9%), Scottish (17.4%), Irish (16.8%), Canadian (12.1%), German (9.3%), French (6.6%), Dutch (5.0%), Italian (4.5%), British Isles (4.3%), Indian (3.7%), Polish (3.6%), and Chinese (3.0%). Indigenous people made up 2.6% of the population, with most being First Nations (1.9%). Ethnocultural backgrounds in the city included European (68.7%), South Asian (6.5%), Arab (5.3%), Black (4.2%), Latin American (3.0%), Chinese (2.9%), Southeast Asian (1.4%), Filipino (1.4%), West Asian (1.3%), and Korean (1.0%). Note: Totals greater than 100% due to multiple origin responses. Language The 2021 census found English to be the mother tongue of 71.1% of the population. This was followed by Arabic (3.7%), Spanish (2.7%), Mandarin (1.6%), Portuguese (1.3%), French (1.1%), Polish (1.1%), Korean (0.8%), Punjabi (0.8%), Malayalam (0.8%), and Urdu (0.7%). Of the official languages, 98% of the population reported knowing English and 7.2% French. Religion In 2021, 48.8% of the population identified as Christian, with Catholics (21.5%) making up the largest denomination, followed by United Church (4.7%), Anglican (4.4%), Orthodox (1.8%), Presbyterian (1.5%), Baptist (1.4%), and other denominations. 37.2% of the population reported no religious affiliation. Others identified as Muslim (8.4%), Hindu (2.1%), Sikh (1.0%), Buddhist (0.9%), Jewish (0.5%), and with other religions. Economy London's economy is dominated by medical research, financial services, manufacturing, and information technology. Much of the life sciences and biotechnology related research is conducted or supported by the University of Western Ontario (partly through the Robarts Research Institute), which adds about C$1.5 billion to the London economy annually. Private companies in the industry like Alimentiv, KGK Sciences and Sernova are also based in London. The largest employer in London is the London Health Sciences Centre, which employs 10,555 people.