<Li> District of Guam </Li> <Li> District of the Northern Mariana Islands </Li> <P> Headquartered in San Francisco, California, the Ninth Circuit is by far the largest of the thirteen courts of appeals, with 29 active judgeships . The court's regular meeting places are Seattle at the William Kenzo Nakamura United States Courthouse, Portland at the Pioneer Courthouse, San Francisco at the James R. Browning U.S. Court of Appeals Building, and Pasadena at the Richard H. Chambers U.S. Court of Appeals . Panels of the court occasionally travel to hear cases in other locations within the circuit . Although the judges travel around the circuit, the court arranges its hearings so that cases from the northern region of the circuit are heard in Seattle or Portland, cases from southern California are heard in Pasadena, and cases from northern California, Nevada, Arizona, and Hawaii are heard in San Francisco . For lawyers who must come and present their cases to the court in person, this administrative grouping of cases helps to reduce the time and cost of travel . </P> <Table> <Tr> <Th> Year </Th> <Th> Jurisdiction </Th> <Th> Total population </Th> <Th> Pop . as% of nat'l pop . </Th> <Th> Number of active judgeships </Th> </Tr> <Tr> <Td> 1891 </Td> <Td> California, Idaho, Montana, Nevada, Oregon, Washington </Td> <Td> 2,087,000 </Td> <Td> 3.3% </Td> <Td> </Td> </Tr> <Tr> <Td> 1900 </Td> <Td> Territory of Hawaii added </Td> <Td> 2,798,000 </Td> <Td> 3.7% </Td> <Td> </Td> </Tr> <Tr> <Td> 1920 </Td> <Td> Arizona added </Td> <Td> 7,415,000 </Td> <Td> 6.7% </Td> <Td> </Td> </Tr> <Tr> <Td> 1940 </Td> <Td> </Td> <Td> 11,881,000 </Td> <Td> 9.0% </Td> <Td> 7 </Td> </Tr> <Tr> <Td> 1960 </Td> <Td> Alaska and Guam added </Td> <Td> 22,607,000 </Td> <Td> 12.6% </Td> <Td> 9 </Td> </Tr> <Tr> <Td> 1980 </Td> <Td> Northern Mariana Islands added </Td> <Td> 37,170,000 </Td> <Td> 16.4% </Td> <Td> 23 </Td> </Tr> <Tr> <Td> 2000 </Td> <Td> </Td> <Td> 54,575,000 </Td> <Td> 19.3% </Td> <Td> 28 </Td> </Tr> <Tr> <Td> 2007 </Td> <Td> </Td> <Td> 60,400,000 </Td> <Td> 19.9% </Td> <Td> 28 </Td> </Tr> <Tr> <Td> 2009 </Td> <Td> </Td> <Td> 61,403,307 </Td> <Td> 19.72% </Td> <Td> 29 </Td> </Tr> </Table>

Where is 9th circuit court of appeals located