Wellesley is a town in Norfolk County, Massachusetts, United States. Wellesley is part of Greater Boston. The population was 27,982 at the time of the 2010 census. In 2008, Wellesley had the 3rd highest median household and family incomes in all of Massachusetts. In 2018, data from the American Community Survey revealed that Wellesley was the 7th wealthiest city in the United States. It is best known as the home of Wellesley College, Babson College, and a campus of Massachusetts Bay Community College.
As of the census of 2000, there were 26,613 people, 8,594 households, and 6,540 families residing in the town. The population density was 2,614.1 people per square mile (1,009.4/km²). There were 8,861 housing units at an average density of 870.4 per square mile (336.1/km²). According to a 2007 Census Bureau estimate, the racial makeup of the town was 84.6% White, 10.0% Asian, 2.2% Black, 0.01% Native American, 0.01% Pacific Islander, 1.4% from other races, and 1.7% from two or more races. Hispanic or Latino of any race were 3.4% of the population.
There were 8,594 households out of which 39.9% had children under the age of 18 living with them, 67.2% were married couples living together, 7.1% had a female householder with no husband present, and 23.9% were non-families. 20.7% of all households were made up of individuals and 10.5% had someone living alone who was 65 years of age or older. The average household size was 2.70 and the average family size was 3.14.
In the town, the population was spread out with 25.1% under the age of 18, 13.9% from 18 to 24, 22.9% from 25 to 44, 24.2% from 45 to 64, and 13.9% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 77.9 males. For every 100 females age 18 and over, there were 71.1 males.
The median income for a household was $159,167, and the median income for a family was $186,518. The per capita income in the town was $72,046. About 2.4% of families and 3.8% of the population were below the poverty line, including 4.0% of those under age 18 and 2.1% of those age 65 or over.