Free online access. Annual report "presents statistics on the work of the Federal Judiciary for the fiscal year ending September 30, 2012, comparing data for this year to data for prior years and, when possible, explaining increases or decreases in caseloads."
Free online access. "This section of uscourts.gov provides statistical data on the business of the federal Judiciary. Specific publications address the work of the appellate, district, and bankruptcy courts; the probation and pretrial services systems; and other components of the U.S. courts."
Free online access. This is "a joint project of the National Center for State Courts (NCSC) and the Conference of State Court Administrators (COSCA) — publishes caseload data from the courts of the fifty states, the District of Columbia, and Puerto Rico."