Pasadena /ˌpæsəˈdiːnə/ is a city in Los Angeles County, California, United States. As of the 2010 United States Census, the population of Pasadena was 137,122, making it the 180th-largest city in the United States, down from 168th place in 2009.Pasadena is the ninth-largest city in Los Angeles County. Pasadena was incorporated on June 19, 1886, becoming the fourth city to be incorporated in Los Angeles County, after Los Angeles (April 4, 1850), Anaheim (February 10, 1870) and Santa Ana (June 1, 1886); the latter two moved to Orange County after its separation from Los Angeles County in 1889. It is one of the primary cultural centers of the San Gabriel Valley.
The city is known for hosting the annual Rose Bowl football game and Tournament of Roses Parade. In addition, Pasadena is also home to many scientific and cultural institutions, including the California Institute of Technology (Caltech), the Jet Propulsion Laboratory, Fuller Theological Seminary, Art Center College of Design, the Pasadena Playhouse, the Norton Simon Museum of Art and the Pacific Asia Museum.