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. 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.
According to the United States Census Bureau, the city has a total area of 1.95 square miles (5.04 km²).
As of the census of 2000, there were 118 people, 54 households, and 28 families residing in the city. The population density was 80.9 people per square mile (31.2/km²). There were 79 housing units at an average density of 54.2 per square mile (20.9/km²).
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