Randallstown is an unincorporated community and census-designated place in Baltimore County, Maryland, United States. It is named after Christopher and Thomas Randall, two 18th-century tavern-keepers. At that time, Randallstown was a tollgate crossroads on the Liberty Turnpike, a major east–west thoroughfare. Today it is a suburb of Baltimore, with a population of 32,430 as of the 2010 census. In the 1990s, Randallstown transitioned to a majority African American community, and is currently notable for its broad ethnic diversity.
Choate House was listed on the National Register of Historic Places in 1989.
Randallstown is located at 39°22′31″N 76°47′48″W (39.375272, −76.796621).
According to the United States Census Bureau, the CDP has a total area of 10.3 square miles (27 km2), all land.
As of the census of 2000, there were 30,870 people, 11,379 households, and 8,147 families living in the CDP. The population density was 2,996.1 people per square mile (1,157.2/km²). There were 11,900 housing units at an average density of 1,155.0 per square mile (446.1/km²). The racial makeup of the CDP was 23.18% White, 72.11% African American, 0.20% Native American, 2.21% Asian, 0.02% Pacific Islander, 0.54% from other races, and 1.74% from two or more races. Hispanic or Latino of any race were 1.54% of the population.