Chongqing (重庆; Chóngqìng, formerly spelled Chungking ) is fast becoming the most economically important city in the interior West China, with an urban population of around 8.8 million. In addition to the central urban area, the municipality of Chongqing also includes some 80,000 km² (31,000 sq mi) of the neighboring countryside and smaller towns, with approximately 30 million people altogether.