Westminster is a Home Rule Municipality in Adams and Jefferson counties in the U.S. state of Colorado. Westminster is a northwest suburb of Denver. The Westminster Municipal Center is located 9 miles (14 km) north-northwest of the Colorado State Capitol. As of the 2010 census the population of Westminster was 106,114, and as of 2019 the estimated population was 113,166. Westminster is the seventh most populous city in Colorado and the 237th most populous city in the United States. Westminster is a part of the Denver-Aurora-Lakewood, CO Metropolitan Statistical Area and the Denver-Aurora-Boulder Combined Statistical Area.
Gold discovered in the South Platte River Valley in 1858 brought national attention to the area that would become Westminster, Colorado. The promise of fortune and The Homestead Act of 1862 encouraged many pioneers from the east to settle in Colorado rather than continue on to California. Before the settlements came, wildlife like antelope and buffalo made their homes in the area. There is also evidence of Arapaho Indians near the Crown Point (Gregory Hill) area.