Arbutus is an unincorporated community and a census-designated place in Baltimore County, Maryland, United States. The population was 20,483 at the 2010 census. The census area also contains the communities of Halethorpe and Relay, in which all three names were used during the 1960 census when the area had a population of 22,402.
Arbutus is located at 39°14′40″N 76°41′38″W (39.244406, −76.693928).
According to the United States Census Bureau, the CDP has a total area of 6.5 square miles (17 km2), all land.
Herbert Run, a stream, runs through Arbutus and surrounding areas.
The original Relay was an important station on the Baltimore and Ohio Railroad. It was where traffic from Baltimore merged with that from Washington, before continuing west along the railroad's main line towards Wheeling, West Virginia (prior to 1863, Virginia). It was also a key junction for the railroad's telegraph system (the first major system in the country).
As of the 2010 census Arbutus had a population of 20,483. The racial and ethnic composition of the population was 76.6% non-Hispanic white, 9.5% non-Hispanic black, 0.2% Native American, 2.1% Asian Indian, 6.5% other Asian, 0.1% Pacific Islander, 0.2% non-Hispanic from some other race, 2.3% from two or more races and 2.9% Hispanic or Latino of any race.
As of the census of 2000, there were 20,116 people, 8,120 households, and 5,204 families residing in the CDP. The population density was 3,093.8 people per square mile (1,194.9/km2). There were 8,380 housing units at an average density of 1,288.8 per square mile (497.8/km2).