<Tr> <Td_colspan="2"> The least populous Colorado city </Td> </Tr> <P> The City of Black Hawk is a Home Rule Municipality in Gilpin County, Colorado, United States . The city population was 118 at the 2010 United States Census, making Black Hawk the least populous city (rather than town) in Colorado . The tiny city is an historic mining settlement founded in 1859 during the Pike's Peak Gold Rush . Black Hawk is a part of the Denver - Aurora - Lakewood, CO Metropolitan Statistical Area . </P> <P> Black Hawk is located adjacent to Central City, another historic mining settlement in Gregory Gulch . The two cities form the federally designated Central City / Black Hawk National Historic District . The area flourished during the mining boom of the late 19th century following the construction of mills and a railroad link to Golden . The town declined during the 20th century, but has been revived in recent years after the 1991 establishment of casino gambling following a statewide initiative in 1990 . In early 2010, the Black Hawk city council passed a law banning the riding of bicycles in the town, drawing a reaction from bicycle advocacy groups and international press . The ban was overturned by the Colorado Supreme Court in 2013 . </P> <P> The town is located along the north fork of Clear Creek and Gregory Gulch . Black Hawk was established in 1859 . In May 1859 the discovery of gold in Gregory Gulch by its namesake, John H. Gregory, brought thousands of prospectors and miners into the area, combing the hills for more gold veins . The Bobtail lode was discovered the following month . Hardrock mining boomed for a few years, but then declined in the mid-1860s as the miners exhausted the shallow parts of the veins that contained free gold, and found that their amalgamation mills could not recover gold from the deeper sulfide ores . </P>

Is blackhawk and central city the same place