Quincy is a city located in Norfolk County, Massachusetts. As of the 2000 census, the city had a total population of 88,025. Quincy was named for U.S. President John Quincy Adams, and was originally part of Braintree, the town of Adams' birth.
According to the United States Census Bureau, the city has a total area of 69.6 km² (26.9 mi²). 43.5 km² (16.8 mi²) of it is land and 26.2 km² (10.1 mi²) of it is water. The total area is 37.60% water.
As of the census of 2000, there are 88,025 people, 38,883 households, and 20,530 families residing in the city. The population density is 2,025.4/km² (5,244.3/mi²). There are 40,093 housing units at an average density of 922.5/km² (2,388.7/mi²). The racial makeup of the city is 79.60% White, 2.21% African American, 0.16% Native American, 15.39% Asian, 0.02% Pacific Islander, 0.85% from other races, and 1.76% from two or more races. 2.08% of the population are Hispanic or Latino of any race.
There are 38,883 households out of which 20.7% have children under the age of 18 living with them, 38.7% are married couples living together, 10.5% have a female householder with no husband present, and 47.2% are non-families. 37.6% of all households are made up of individuals and 13.4% have someone living alone who is 65 years of age or older. The average household size is 2.22 and the average family size is 3.03.
In the city the population is spread out with 17.5% under the age of 18, 8.1% from 18 to 24, 36.1% from 25 to 44, 22.1% from 45 to 64, and 16.3% who are 65 years of age or older. The median age is 38 years. For every 100 females there are 91.0 males. For every 100 females age 18 and over, there are 88.5 males.
The median income for a household in the city is $47,121, and the median income for a family is $59,735. Males have a median income of $40,720 versus $34,238 for females. The per capita income for the city is $26,001. 7.3% of the population and 5.2% of families are below the poverty line. Out of the total people living in poverty, 10.1% are under the age of 18 and 7.0% are 65 or older.