Each state has at least one United States District Court. Maryland has two–one located Baltimore City (Northern Division), and one in Greenbelt (Southern Division).
Understanding the Federal Courts
The President of the United States appoints federal judges for life, after confirmation by the Senate. The salaries are set–in 2014, they make $199,100, an increase of $5,100 over 2013 (which had been stagnant since 2009). There are other judges called magistrates, who assist the federal judges, and are appointed by the federal district judges. Magistrates often resolve discovery disputes and pre-trial motions. With permission of the parties, they can oversee trials.