area is home to the largest ethnic Chinese population outside of Asia, comprising an estimated 893,697 uniracial individuals as of 2017, including at least 12 Chinatowns – six (or nine, including the emerging Chinatowns in Corona and Whitestone, Queens, and East Harlem, Manhattan) in New York City proper, and one each in Nassau County, Long Island; Edison, New Jersey; and Parsippany-Troy Hills, New Jersey, not to mention fledgling ethnic Chinese enclaves emerging throughout the New York City metropolitan area. San Francisco, a Pacific port city, has the oldest and longest continuous running Chinatown in the Western Hemisphere. In Canada, Vancouver's Chinatown is the country's largest. The oldest Chinatown in the Americas is in Mexico City and dates back to at least the early 17th century. Since the 1970s, new arrivals have typically hailed from Hong Kong, Macau, and Taiwan. Latin American Chinatowns may include the descendants of original migrants – often of mixed Chinese and Latin parentage – and more recent immigrants from East Asia. Most Asian Latin Americans are of Cantonese and Hakka origin. Estimates widely vary on the number of Chinese descendants in Latin America. Notable Chinatowns also exist in Chinatown, Lima, Peru. Asia Chinatowns in Asia are widespread with a large concentration of overseas Chinese in East Asia and Southeast Asia and ethnic Chinese whose ancestors came from southern China – particularly the provinces of Guangdong, Fujian, and Hainan – and settled in countries such as Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, Singapore, the Philippines, Thailand, and Vietnam centuries ago—starting as early as the Tang Dynasty, but mostly notably in the 17th through the 19th centuries (during the reign of the Qing Dynasty), and well into the 20th century. Today the Chinese diaspora in Asia is largely concentrated in Southeast Asia however the legacy of the once widespread overseas Chinese communities in Asia is evident in the many Chinatowns that are found across East Asia, South Asia, and Southeast Asia. Vietnam houses the largest Chinatown by size in Ho Chi Minh City (formerly Saigon). Australia and Oceania The Chinatown of Melbourne lies within the Melbourne central business district and centers on the eastern end of Little Bourke Street. It extends between the corners of Swanston and Exhibition Streets. Melbourne's Chinatown originated during the Victorian gold rush in 1851, and is notable as the oldest Chinatown in Australia. It has also been claimed to be the longest continuously