Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The City of Dacono is a Home Rule Municipality located in Weld County, Colorado, United States. The population was 3,015 at the 2000 census.According to the United States Census Bureau, the city has a total area of 2.7 square miles (7.1 km²), of which, 2.7 square miles (7.1 km²) of it is land and 0.37% is water.