 Baltimore County.
Catonsville is a census-designated place (CDP) in Baltimore County, Maryland, United States. The population was 41,567 at the 2010 census. The community lies to the west of Baltimore along the city's border. Catonsville is dominated economically and demographically by the presence of the University of Maryland, Baltimore County (UMBC), a major public research university with close to 14,000 students. Description. Catonsville is a census-designated place (CDP) in Baltimore County, Maryland, United States. The population was 39,820 at the 2000 census. Catonsville is bordered by Woodlawn to the north, by Baltimore to the east, by Elkridge to the south, and by Ellicott City to its west. Catonsville is the home of University of Maryland, Baltimore County (UMBC), a public research university with over 12,000 students. Europeans were the second group to settle the area now known as Catonsville. The Catonsville Census Designated Place had a population of 42,116 as of July 1, 2015. Catonsville ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Maryland. See peer rankings below.
https://en.wikipedia.org/wiki/Catonsville,_Maryland http://www.mapquest.com/us/md/catonsville-282039652 http://maryland.hometownlocator.com/md/baltimore/catonsville.cfm
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