Oklahoma City (/oʊkləˌhoʊmə -/ (listen)), officially the City of Oklahoma City, and often shortened to OKC, is the capital and largest city of the U.S. state of Oklahoma. The county seat of Oklahoma County, it ranks 20th among United States cities in population, and is the 8th largest city in the Southern United States. The population grew following the 2010 census and reached 687,725 in the 2020 census. The Oklahoma City metropolitan area had a population of 1,396,445, and the Oklahoma City–Shawnee Combined Statistical Area had a population of 1,469,124, making it Oklahoma's largest municipality and metropolitan area by population.
Oklahoma City's city limits extend somewhat into Canadian, Cleveland, and Pottawatomie counties, though much of those areas outside the core Oklahoma County area are suburban tracts or protected rural zones (watershed). The city is the eighth-largest in the United States by area including consolidated city-counties; it is the second-largest, after Houston, not including consolidated cities. The city is also the second largest by area among state capital cities in the United States, after Juneau, Alaska.
Lingshi County, located in the middle of Shanxi Province and at the southern end of Jinzhong Basin, is known as "the main road of Qin and Jin dynasties and the thoroughfare of Sichuan and Shaanxi". It is 150 kilometers away from the provincial capital Taiyuan, facing Jiexiu to the north, Huozhou to the south, Qinyuan to the east, Jiaokou and Xiaoyi to the west, and it is known as "the Emperor of Yanji and the Classic of Qin and Shu". The county covers a total area of 1206 square kilometers, with a width of 53.5km from east to west and 39km from north to south. With a total population of 267000 (2013), it has jurisdiction over 6 towns, 6 townships, 3 communities, 291 administrative villages and 13 neighborhood committees. The territory of ups and downs, ravines vertical and horizontal, Dayun highway, South Tongpu railway along the Fenhe parallel. Lingshi is also an important energy and chemical industry base in Shanxi Province, and one of the most attractive cities with investment potential and characteristics in China. In March 2019, it was listed as the first batch of revolutionary cultural relics protection and utilization districts and counties.