Mine Hill and its minerals have been associated with Roxbury since the middle of the 18th Century. A silver mine was opened here and was later found to contain spathic iron, specially adapted to steel making and a small smelting furnace was built. The abundance of granite found in many of Mine Hill's quarries provided the building material for the ore roaster and blast furnace, as well as for such world wonders as the Brooklyn Bridge and Grand Central Terminal in New York City.
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As of the census of 2000, there were 2,136 people, 848 households, and 620 families residing in the town. The population density was 81.4 people per square mile (31.4/km²). There were 1,018 housing units at an average density of 38.8/sq mi (15.0/km²). The racial makeup of the town was 97.24% White, 0.23% African American, 0.19% Native American, 0.94% Asian, 0.66% from other races, and 0.75% from two or more races. Hispanic or Latino of any race were 1.31% of the population.
There were 848 households out of which 29.2% had children under the age of 18 living with them, 66.5% were married couples living together, 4.2% had a female householder with no husband present, and 26.8% were non-families. 20.3% of all households were made up of individuals and 7.1% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 2.95.
In the town the population was spread out with 22.8% under the age of 18, 3.7% from 18 to 24, 25.5% from 25 to 44, 34.3% from 45 to 64, and 13.8% who were 65 years of age or older. The median age was 44 years. For every 100 females there were 104.0 males. For every 100 females age 18 and over, there were 102.0 males.
The median income for a household in the town was $87,794, and the median income for a family was $97,672. Males had a median income of $61,477 versus $45,417 for females. The per capita income for the town was $56,769. About 3.0% of families and 3.9% of the population were below the poverty line, including 4.1% of those under age 18 and 6.3% of those age 65 or over.