The Kansas City metropolitan area is a bi-state metropolitan area anchored by Kansas City, Missouri. Its 14 counties straddle the border between the U.S. states of Missouri (9 counties) and Kansas (5 counties). With 8,472 square miles (21,940 km2) and a population of more than 2.2 million people, it is the second-largest metropolitan area centered in Missouri (after Greater St. Louis) and is the largest metropolitan area in Kansas, though Wichita is the largest metropolitan area centered in Kansas. Alongside Kansas City, Missouri, these are the suburbs with populations above 100,000: Overland Park, Kansas; Kansas City, Kansas; Olathe, Kansas; Independence, Missouri; and Lee's Summit, Missouri.
Huanxian County, which belongs to Qingyang City, Gansu Province, is located in the east and northwest of Gansu Province, between 36 °1 & #39;-37 °9 & #39;, east longitude 106 °21 & #39;-107 °44 & #39;, east of Huachi County of Gansu Province and Dingbian County of Shaanxi Province, Qingcheng and Zhenyuan County of Gansu Province to the south, Yuanzhou District and Tongxin County of Guyuan City of Ningxia in the west, and Yanchi County of Ningxia to the north. It is about 124km wide in the east and west and 127km in length from north to south, with a total area of 9236 square kilometers. As of 2017, the total population is 361000, mainly Han nationality, including Hui, Mongolian, Tibetan, Uygur, Miao, Yi, Zhuang, Buyi, Korean, Manchu and Dong.