Tijuana is a city and municipal seat of Tijuana Municipality, Baja California, located on the Pacific Coast of Mexico. It is part of the San Diego-Tijuana metro area and the larger Southern California megapolitan area. Tijuana is the 45th largest city in the Americas and is one of the westernmost cities in Mexico. According to the 2015 census, the Tijuana metropolitan area was the fifth-largest in Mexico, with a population of 1,840,710, but rankings vary, the city (locality) itself was 6th largest and the municipality (administrative) 3rd largest nationally. The international metropolitan region was estimated at 5,158,459 in 2016, making it the third-largest metropolitan area in The Californias, 19th-largest metropolitan area in the Americas, and the largest bi-national conurbation that is shared between US and Mexico. Tijuana is becoming more suburbanized like San Diego. Tijuana is the second most populous city in Mexico and center of the 6th-largest metro area in Mexico, The city is one of the fastest-growing metro areas in the country and rated as a "High Sufficiency" global city by the Globalization and World Cities Research Network. As of September 2019, the city of Tijuana had a population of 1,810,645, with its metropolitan area containing a population of 2,157,853 as of 2020, an estimated 2,002,000 within the urban area.