Information on state court organization as of January 1, 1980, in the 50 states, American Samoa, the District of Columbia, Guam, Puerto Rico, and the Virgin Islands is provided. Data were collected from published sources and through questionnaires. There are two major parts. Part I consists of 36 tables containing comparative data from all the states and other jurisdictions which describe particular facets of state court personnel, organization, structure, and administration. Data are summary in nature. Subject matter covered by the tables is diverse, including descriptions of justices' and judges' positions at all levels of court; court jurisdiction; methods of judicial selection; the selection, qualification, and use of jurors; state-level court administrative offices; and descriptions of judicial disciplinary bodies. Part II contains narrative profiles and figures that describe the organization of the judicial system in each state. Information is presented on seven topics: courts of last resort; intermediate appellate courts; courts of general jurisdiction; courts of limited or special jurisdiction; state-level administration; quasi-judicial officers; and judicial discipline. Appendices contain names of state court administrators, data collection instruments, and a glossary. (Author/RM)