The City of Dacono is a Home Rule Municipality located in Weld County, Colorado, United States. The population was 4,152 at the 2010 census.
The city name's is an amalgamation of the names of Daisy Baum, Cora Van Vorhies and Nora Brooks. Dacono was first settled in 1901, and early settlers moved there to work in the coal mines. The city was incorporated in 1908.
Dacono is located at 40°4′33″N 104°56′43″W (40.075772, -104.945353).
According to the United States Census Bureau, the city has a total area of 2.7 square miles (7.0 km2), of which, 2.7 square miles (7.0 km2) of it is land and 0.37% is water.
Dacono is home to the Colorado National Speedway.
As of the census of 2000, there were 3,015 people, 1,087 households, and 756 families residing in the city. The population density was 1,103.0 people per square mile (426.4/km2). There were 1,136 housing units at an average density of 415.6 per square mile (160.7/km2). The racial makeup of the city was 77.05% White, 0.43% African American, 0.96% Native American, 1.00% Asian, 17.98% from other races, and 2.59% from two or more races.