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. The United States Census Bureau that the city population was 106,114 on April 1, 2010 Census. Westminster is the seventh most populous city in the state of Colorado and the 237th most populous city in the United States. The city ranks as the #2 most densely populated city in Colorado at 4,114 people per square mile putting it ahead of Denver and behind only Dupont (pop. 247.) Westminster is a part of the Denver-Aurora-Broomfield, CO Metropolitan Statistical Area and the Denver-Aurora-Boulder Combined Statistical Area. In July 2006, it was ranked as the 24th best place to live in the USA by Money magazine.

High schools in or near Westminster include the Academy of Charter Schools, Hidden Lake High School, Jefferson Academy High School, Legacy High School, Mountain Range High School, Northglenn High School, Pomona High School, Standley Lake High School, and Westminster High School. In 2010 Adams County School District 50 opened a new Westminster High School replacing both the existing Westminster High School and Ranum High School, which graduated its last class that year.

Westminster has an extensive trail network and open space system. The highlight of the trail system is the Big Dry Creek Trail which extends approximately 12 miles (19 km) from the eastern boundary of the city to Standley Lake. Other trails parallel the Farmers’ High Line Canal, Walnut Creek, and Little Dry Creek. In addition, the city has preserved large expanses of land in the Standley Lake Regional Park, the Westminster Hills area, and various sites which reflect the city’s history. Westminster City Park, City Park Recreation Center, and many other neighborhood and community parks provide various recreation facilities. Westminster has several golf courses, including Legacy Ridge Golf Course, The Heritage Golf Course at Westmoor and the Hyland Hills golf course.