On January 1, 2002, as part of a legislated amalgamation of cities across Quebec, Sillery ceased to exist as an independent municipality.
Its territory became a part of the Sainte-Foy—Sillery—Cap-Rouge Borough of Québec.
 Of the former municipalities that now comprise Québec, Sillery was relatively linguistically diverse.
In 2006, 4.95% of its population had at least English for mother tongue, and 5.75% for languages other than French or English, while for the census metropolitan area of Quebec City, it was respectively 1.75% and 2.93%.

Sillery is also known as one of the most affluent area of Quebec City, as residential properties sold on average for CA$570,000 in 2017, and where live a number of professors of nearby Laval University.
Nonetheless, there is still a pocket of modest and small apartment buildings.

According to the statistics agency of Quebec, in 2001 the average income of Sillery households was CA$113,091, and 58% of them earned more than CA$80,000 per year (in both case the highest figure in the Capitale-Nationale region.)
In 2012, the personal average income was CA$55,645, still the highest in the Quebec City region.
On January 1, 2002, as part of a legislated amalgamation of cities across Quebec, Sillery ceased to exist as an independent municipality. Its territory became a part of the Sainte-Foy—Sillery—Cap-Rouge Borough of Québec.  Of the former municipalities that now comprise Québec, Sillery was relatively linguistically diverse. In 2006, 4.95% of its population had at least English for mother tongue, and 5.75% for languages other than French or English, while for the census metropolitan area of Quebec City, it was respectively 1.75% and 2.93%.
Sillery is also known as one of the most affluent area of Quebec City, as residential properties sold on average for CA$570,000 in 2017, and where live a number of professors of nearby Laval University. Nonetheless, there is still a pocket of modest and small apartment buildings.
According to the statistics agency of Quebec, in 2001 the average income of Sillery households was CA$113,091, and 58% of them earned more than CA$80,000 per year (in both case the highest figure in the Capitale-Nationale region.) In 2012, the personal average income was CA$55,645, still the highest in the Quebec City region.
Sillery, Quebec City