Taichung, officially Taichung City, is a special municipality located in central Taiwan. Taichung has a population of approximately 2.82 million people and is Taiwan's second most populous city. It serves as the core of the Taichung–Changhua metropolitan area, which is the second largest metropolitan area in Taiwan. The current city was formed when Taichung County merged with the original provincial Taichung City to form the special municipality on 25 December 2010. It is classified as a "Gamma" level global city by the Globalization and World Cities Research Network.