Ashton-Sandy Spring is a census-designated place located in Montgomery County, Maryland. The CDP is designated to include the two unincorporated communities of Ashton and Sandy Spring.
According to the United States Census Bureau, the place has a total area of 19.7 km² (7.6 mi²). 19.6 km² (7.6 mi²) of it is land and 0.1 km² (0.04 mi²) of it is water. The total area is 0.26% water.
As of the census of 2000, there are 3,437 people, 1,246 households, and 914 families residing in the area. The population density is 175.3/km² (454.1/mi²). There are 1,282 housing units at an average density of 65.4/km² (169.4/mi²). The racial makeup of the area is 81.00% White, 12.28% African American, 0.23% Native American, 3.43% Asian, 0.00% Pacific Islander, 1.25% from other races, and 1.80% from two or more races. 3.52% of the population are Hispanic or Latino of any race.
There are 1,246 households out of which 33.1% have children under the age of 18 living with them, 62.9% are married couples living together, 8.7% have a female householder with no husband present, and 26.6% are non-families. 22.9% of all households are made up of individuals and 13.8% have someone living alone who is 65 years of age or older. The average household size is 2.69 and the average family size is 3.18.
In the area the population is spread out with 26.3% under the age of 18, 3.8% from 18 to 24, 23.4% from 25 to 44, 27.3% from 45 to 64, and 19.2% who are 65 years of age or older. The median age is 43 years. For every 100 females there are 88.8 males. For every 100 females age 18 and over, there are 80.2 males.
The median income for a household in the area is $73,458, and the median income for a family is $87,335. Males have a median income of $69,375 versus $43,929 for females. The per capita income for the area is $36,833. 4.8% of the population and 1.8% of families are below the poverty line. Out of the total people living in poverty, 6.7% are under the age of 18 and 4.6% are 65 or older.