The City of Commerce City is a Home Rule Municipality located in Adams County, Colorado, United States. The city population was 45,913 at the 2010 United States Census.
In 1859, John D. "Colonel Jack" Henderson built a ranch, trading post, and hotel on Henderson Island in the South Platte River in Arapahoe County, Kansas Territory. Henderson sold meat and provisions to gold seekers on their way up the South Platte River Trail to the gold fields during the Pike's Peak Gold Rush.Until the late 1920s, the area was devoted to agriculture, including wheat fields, dairies, and pig farms. Industry moved in, with a refinery established in 1930 and grain elevators built in the late 1930s.In 1946 and 1947, Adams County School District 14 was formed from surrounding schools, and Adams City was redeveloped about that time. In 1951, as Denver was considering annexing the area, a plan to incorporate all of southern Adams County was developed. On 1952-07-08, area residents voted 251 to 24 to incorporate Commerce Town, comprising neighborhoods such as Rose Hill and southern Adams City. Commerce Town annexed part of Derby in 1962, increasing the population over fourfold, enough for the town to gain the status of a city. The city name was duly changed to Commerce City.On 2007-04-03, the citizens of Commerce City voted overwhelmingly to retain their city's name.