Maryland's 3rd congressional district

Maryland's 3rd congressional district
Interactive map of district boundaries since January 3, 2023
Representative	Sarah Elfreth D–Annapolis
Area	292.74 sq mi (758.2 km2)
Distribution	98.7% urban 1.3% rural
Population (2023)	778,152
Median household income	$122,470[1]
Ethnicity	57.0% White 17.2% Black 10.9% Asian 9.0% Hispanic 5.1% Two or more races 0.8% other
Occupation	71.7% White-collar 15.7% Blue-collar 12.5% Gray-collar
Cook PVI	D+12[2]

Maryland's 3rd congressional district covers all of Howard county as well as parts of Anne Arundel and Carroll counties. The seat is currently represented by Sarah Elfreth, a Democrat.

Three people who represented Maryland in the United States Senate were also former representatives of the 3rd district, including Ben Cardin, Barbara Mikulski, and Paul Sarbanes.