Westmount is a neighbourhood in the southwest part of London, Ontario, Canada. As of the 2016 Canadian census, the population of Westmount is 18,985. The top five ethnic origins are English, Scottish, Canadian, Irish, and German. The average household income for the neighbourhood is $98,850, one of the highest in the city, however employment levels ar…Westmount is a neighbourhood in the southwest part of London, Ontario, Canada. As of the 2016 Canadian census, the population of Westmount is 18,985. The top five ethnic origins are English, Scottish, Canadian, Irish, and German. The average household income for the neighbourhood is $98,850, one of the highest in the city, however employment levels are down in comparison with the city. The top three occupations of Westmount residents are: Sales and Service occupations, Business & Finance, and Administration.