Pueblo is a Home Rule Municipality that is the county seat and the most populous city of Pueblo County, Colorado, United States. The population was to be 106,595 in 2010 census, making it the 246th most populous city in the United States.
Pueblo is situated at the confluence of the Arkansas River and Fountain Creek 103 miles (166 km) south of the Colorado State Capitol in Denver. The area is considered to be semi-arid desert land, with approximately 12 inches (304.80 mm) of precipitation annually; however with its location in the "banana belt", Pueblo tends to get less snow than the other major cities in Colorado. Pueblo is the heart of the Pueblo Metropolitan Statistical Area and an important part of the Front Range Urban Corridor. Pueblo is one of the largest steel-producing cities in the United States; because of this Pueblo is referred to as the "Steel City". The Historic Arkansas River Project (HARP) is a river walk in the Union Avenue Historic Commercial District, and shows the history of the Pueblo Flood.
George Simpson, among other traders and trappers such as Mathew Kinkead, claimed to have helped construct the plaza that became known as El Pueblo or Fort Pueblo around 1842. George married Juana Maria Suaso and lived there for a year or two before moving; however, Simpson had no legal title to the land. The adobe structures were built with the intention of settlement and trade next to the Arkansas River, which then formed the U.S./Mexico border. About a dozen families lived there, trading with Native American tribes for hides, skins, livestock, as well as (later) cultivated plants, and liquor. Evidence of this trade, as well as other utilitarian goods, such as Native American pottery shards were found at the recently excavated site. According to accounts of residents who traded at the plaza (including that of George Simpson), the fort was raided sometime between December 23 and December 25, 1854, by a war party of Utes and Jicarilla Apaches under the leadership of Tierra Blanca, a Ute chief. They allegedly killed between fifteen and nineteen men and captured two children and one woman. The trading post was abandoned after the raid, but it became important again between 1858 and 1859 during the Colorado Gold Rush of 1859.