Catonsville, Maryland in the context of "Streetcar suburb"

Woodlawn is an unincorporated community and census-designated place in Baltimore County, Maryland. Per the 2020 census, the population was 39,986. It is home to the headquarters of the Social Security Administration (SSA) and the Centers for Medicare and Medicaid Services (CMS). It is bordered by Catonsville on the south, by the Patapsco River and Howard County on the west, by Randallstown and Lochearn to the north, and by the City of Baltimore to the east. Parts of Woodlawn are sometimes informally referred to as Security, Maryland, due to the importance of the SSA's headquarters as well as nearby Security Boulevard (Maryland Route 122) and Security Square Mall.

The Lorraine Park Cemetery Gate Lodge and St. Mary's Episcopal Church were listed on the National Register of Historic Places in 1985.

Robert Jenkins Onderdonk (January 16, 1852 – July 2, 1917) was an American painter and art teacher, born in Catonsville, Maryland. An important artist in the first stage of Texas art, he was a long-time art teacher in San Antonio and Dallas, where he formed art associations and leagues; for his contributions to the culture of art and painting in Texas he is known as the "Dean of Texas's Artists."

The University of Maryland, Baltimore County (UMBC) is a public research university in Catonsville, Maryland, United States, named after Baltimore County. It had a fall 2025 enrollment of 13,530 students. In 2019, it had 61 undergraduate majors, over 92 graduate programs (38 master, 25 doctoral, and 29 graduate certificate programs) and the first university research park in Maryland. It is classified among "R1: Doctoral Universities – Very High Research Activity".

Established as a part of the University System of Maryland in 1966, the university became the first public college or university in Maryland to be inclusive of all races. UMBC has the fourth highest enrollment of the University System of Maryland, specializing in natural sciences and engineering, as well as programs in the liberal arts and social sciences. Its athletic teams are known as the UMBC Retrievers and participate in the America East Conference.

The Catonsville Nine were nine Catholic activists who burned draft files to protest the Vietnam War. On May 17, 1968, they took 378 draft files from the draft board office in Catonsville, Maryland, and burned them in the parking lot.