As of the census of 2000, there were 61,101 people, 23,230 households, and 16,237 families residing in the town. The population density was 1,277.6 people per square mile (493.2/km²). There were 24,511 housing units at an average density of 512.5 per square mile (197.9/km²). As of the census of 2013, the racial makeup of the town was 80.90% White, 4.90% African American, 0.10% Native American, 7.80% Asian, 0.03% Pacific Islander, and 2.50% from two or more races. Hispanic or Latino of any race were 13.90% of the population.
There were 23,230 households out of which 33.5% had children under the age of 18 living with them, 59.4% were married couples living together, 8.0% had a female householder with no husband present, and 30.1% were non-families. 24.8% of all households were made up of individuals and 9.9% had someone living alone who was 65 years of age or older. The average household size was 2.60 and the average family size was 3.12.
In the town the population was spread out with 25.4% under the age of 18, 4.1% from 18 to 24, 28.8% from 25 to 44, 25.7% from 45 to 64, and 15.9% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 90.1 males. For every 100 females age 18 and over, there were 85.2 males.
The median income for a household in the town was $124,958, and the median income for a family was $167,825. Males had a median income of $95,085 versus $47,806 for females. The per capita income for the town was $92,759 per 2010 census. About 2.5% of families and 4.0% of the population were below the poverty line, including 4.1% of those under age 18 and 3.2% of those age 65 or over.
Artist’s Home in Autumn, Greenwich, Connecticut (ca. 1895), by John Henry Twachtman
Both the Official AENGLC Wealth Value and the CPR AENGLC Wealth Value show Greenwich as having the highest wealth value in Connecticut at over $930,000 per person. The AENGLC is based on the value of residential and commercial real estate and measures the town’s tax base available to pay for public education(see Conn. Dep of Ed). It is not a measure of the personal wealth of individual residents. New Canaan is the wealthiest town in Connecticut, with a per capita income of $100,824, second is Darien at $95,577 and Greenwich third at $92,759 per the 2010 Census. Median family income in New Canaan at $220,278 also is higher than Greenwich at $167,825.
Greenwich was the highest income place with a population of 50,000 or more in 2000. However, using the list of the 100 richest places in the United States with at least 1,000 households yields a different result. This is the most common list used for referring to the richest communities in the country, as it eliminates any places with unsubstantial populations. On this list Greenwich ranks 56th after New Canaan at 30th, Darien at 42nd, and Weston at 55th.
The median price for a single-family home in town was $1.7 million in 2006, when about 140 properties sold for $5 million or more, according to Prudential Connecticut Realty. In 2007, the highest asking prices for residential property in town were $39.5 million for the 76-acre (310,000 m2) estate of actor Mel Gibson on Old Mill Road, $19.7 million for a 13,000-square-foot (1,200 m2) mansion on 8.7 acres (35,000 m2) with a private lake, and $38 million for an estate with formal gardens and a greenhouse the size of a cottage