Maryland's 2nd congressional district elects a representative to the United States House of Representatives every two years. The district comprises parts of Carroll and Baltimore counties, as well as small portions of the Baltimore City. The seat has been represented by Dutch Ruppersberger of the Democratic Party since 2003.

Carroll County is located in the U.S. state of Maryland. As of the 2020 census, the population was 172,891. Its county seat is Westminster.