District Court

The United States district courts are the general trial courts of the United States federal court system. Both civil and criminal cases are filed in the district court, which is a court of both law and equity. There is a United States bankruptcy court in each United States district court. Each federal judicial district has at least one courthouse, and some large districts have more than one. The formal name of a district court is, for example, United States District Court for the Southern District of New York. There is at least one judicial district for each state, the District of Columbia, and Puerto Rico.

http://en.wikipedia.org/wiki/United_States_district_court