According to the United States Census Bureau, the place has a total area of 6.5 square miles (16.9 km²), of which, 6.5 square miles (16.8 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.46%) is water.
There were 14,142 households out of which 36.8% had children under the age of 18 living with them, 52.5% were married couples living together, 12.6% had a female householder with no husband present, and 31.2% were non-families. 24.0% of all households were made up of individuals and 4.9% had someone living alone who was 65 years of age or older. The average household size was 2.68 and the average family size was 3.21.
In the area, the population was spread out with 26.6% under the age of 18, 7.5% from 18 to 24, 35.4% from 25 to 44, 23.5% from 45 to 64, and 7.0% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 90.9 males. For every 100 females age 18 and over, there were 87.7 males.
The median income for a household in the area was $66,828, and the median income for a family was $74,920. Males had a median income of $50,046 versus $38,665 for females. The per capita income for the area was $29,620. About 3.9% of families and 5.1% of the population were below the poverty line, including 6.6% of those under age 18 and 3.4% of those age 65 or over.
On Feb. 28, 1966, the Kettler brothers broke ground for the first house in Montgomery Village. The first model homes were opened in Lakeside of Whetstone in August 1967. In September, more opened in the Clusters of Stedwick. The Montgomery Village Golf Club also opened in September of that year. The first residents of Montgomery Village moved in on September 25, 1967 in Goshenside. They were the Bartik family. Also on the same day, the Crosby family moved into a home on Whetstone Drive.
The Montgomery Village Foundation was incorporated in 1966. In 1968, the Whetstone Community Center opened as well as Whetstone Elementary and Montgomery Village Middle schools. In 1970, The Village Mall opened, which is now the Village Shopping Center on Montgomery Village Avenue. Then in 1971, the Holiday Inn opened. In 1973, bus service to Washington, DC began.