Pasadena (ˌpæsəˈdiːnə ) is a city in Los Angeles County, California, United States, northeast of downtown Los Angeles. It is the most populous city and the primary cultural center of the San Gabriel Valley. Old Pasadena is the city's original commercial district. Its population was 138,699 at the 2020 census, making it the 44th largest city in California and the ninth-largest city in Los Angeles County. Pasadena was incorporated on June 19, 1886, becoming one of the first cities to be incorporated in what is now Los Angeles County, following the city of Los Angeles (April 4, 1850). Pasadena is known for hosting the annual Rose Bowl football game and Tournament of Roses Parade. It is also home to many scientific, educational, and cultural institutions, including Caltech, Pasadena City College, Kaiser Permanente Bernard J. Tyson School of Medicine, Fuller Theological Seminary, Parsons Corporation, ArtCenter College of Design, the Pasadena Playhouse, the Ambassador Auditorium, the Norton Simon Museum, and the USC Pacific Asia Museum. History of Pasadena, California and Old Town Pasadena The original inhabitants of Pasadena (from the Tongva language name "Pasakeg-na") and surrounding areas were members of the Native American Hahamog-na tribe, a branch of the Tongva Nation. They spoke the Tongva language (part of the Uto-Aztecan languages group). Native Americans had lived in the Los Angeles Basin for thousands of years. Tongva dwellings lined the Arroyo Seco in present day Pasadena and south to where it joins the Los Angeles River and along other natural waterways in the city. The native people lived in thatched, dome-shape lodges and lived on a diet of acorn meal, seeds and herbs, venison, and other small animals as well as trading for ocean fish with the coastal Tongva. They made cooking vessels from steatite soapstone from Catalina Island. The oldest transportation route still in existence in Pasadena is the old Tongva foot trail, also known as the Gabrielino Trail, that follows the west side of the Rose Bowl and the Arroyo Seco past the Jet Propulsion Laboratory into the San Gabriel Mountains.