Adamstown is an unincorporated community and census-designated place (CDP) in Frederick County, Maryland, United States. It is named for Adam Kohlenberg (March 11, 1819 – January 1, 1868), a station agent and first town merchant who owned much of present-day Adamstown. As of the 2010 census, the Adamstown CDP had a population of 2,372.
Adamstown is located in southern Frederick County at 39°18.675′ North, 77°28.504′ West (39.311233, −77.475067). It is 9 miles (14 km) southwest of Frederick, the county seat, and 5 miles (8 km) northeast of the Potomac River at Point of Rocks.
Three new developments with a total of 540 homes have been constructed in Adamstown since 2000 (Green Hill Manor, Saddle Ridge and Adamstown Commons).
The population in 1880 was 66 and approximately 500 in 1971. As of the census of 2000, there are 2,920 people, 1,049 households and 829 families residing in Adamstown. The racial makeup of the county is 92.7% White, 4.9% Black or African American, 0.2% Native American, 0.7% Asian, 0.0% Pacific Islander, 0.2% from other races, and 1.3% from two or more races. 1.6% of the population are Hispanic or Latino of any race.
There are 1,049 households out of which 36.4% have children under the age of 18 living with them, 69.3% are married couples living together, 5.8% have a female householder with no husband present, and 21.0% are non-families. 20.10% of all households are made up of individuals and 9.1% have someone living alone who is 65 years of age or older. The average household size is 2.77 and the average family size is 3.12.
Adamstown’s population is spread out with 28.8% under the age of 19, 2.9% from 20 to 24, 29.4% from 25 to 44, 24.3% from 45 to 64, and 14.5% who are 65 years of age or older. The median age is 39.5 years. For every 100 females, there are 96.46 males. For every 100 females age 18 and over, there are 97 males.