Carrolltowne is an unincorporated community in Carroll County, Maryland, United States.
The Owings Mills station of the Baltimore Metro SubwayLink in nearby Owings Mills, Baltimore County, is a 15-minute drive by car from Carrolltowne and provides subway access to downtown Baltimore.
There is no bus link between Carrolltowne/Eldersburg and nearby Randallstown in Baltimore County, in part due to longstanding opposition to inter-county public transit from Carroll County officials and residents.