LocalLink 30 is a bus route operated by the Maryland Transit Administration in Baltimore and its suburbs.

Some early morning trips before 7 AM lay over at the Centers for Medicare and Medicaid Services (CMS) headquarters.

Extensions have been made to accommodate new developments in the city and suburbs, including most notably, the Social Security Administration's Woodlawn headquarters, which opened in 1960.

In 1973, a new branch was added to the line, which operated to Brighton, serving the Reisterstown Road Plaza and the Cross Country community.

Washington Light Rail Stop, but this plan was later dropped because buses would take longer to travel crosstown, and finding a route was difficult because certain left turns in the Sinai Hospital area are prohibited.

Service frequency was adjusted to 20 minutes and every other trip will continue to turn around at Rogers Avenue Metro Subway Station.