As of 2011, US Congressional District 5 contains all of St. Mary's, Charles, and Calvert Counties and contains parts of Prince George's and Anne Arundel Counties.

Maryland has 8 US Congressional Districts.  Each district has approximately 720,000 people in it. The map is from the National Atlas. For more detailed maps, go to http://www.mdp.state.md.us/Redistricting/2010/congDist.shtml.