According to the 2006 census, there were 152,358 people residing in the Kingston Census Metropolitan Area, of whom 48.7% were male and 51.3% were female. Children under five accounted for approximately 4.8% of the resident population of Kingston. This compares with 5.5% in Ontario.
In 2001, 14.1% of the resident population in Kingston were of retirement age (65 and over) compared with 13.2% in Canada. As a result, the average age is 38.1 years of age as compared to 37.6 years of age for all of Canada. Kingston has a reputation as a suitable place for retirees to settle.
In the five years between 1996 and 2001, the population of Kingston grew by 1.6%, compared with an increase of 6.1% for Ontario as a whole. Population density of Kingston averaged 77.0 people per square kilometre, compared with an average of 12.6 people per square kilometre for Ontario altogether.
The population of Kingston shows significant turnover because of its relatively large student population (about 10%) and the number of military residents associated with Canadian Forces Base Kingston.
According to the Government of Canada 2006 census, 94.2% of the population were Caucasian; of the visible minorities, 1.7% were Chinese, 1.2% were South Asian, and 0.8% were black.
Detailed socio-demographic analysis and information about Kingston can be found in the Kingston Community Profile, 2009: A Socio-Demographic Analysis of Kingston, Ontario Canada  published by the Social Planning Council of Kingston and Area (SPCKA).