The City and County of Broomfield is a consolidated city and county in the U.S. state of the Colorado. Broomfield has a consolidated city and county government which operates under Article XX, Sections 10-13 of the Constitution of the State of Colorado. The population was 55,889 at the 2010 United States Census. Broomfield is the 16th most populous municipality and the 13th most populous county in Colorado.
Broomfield is a part of the Denver-Aurora-Lakewood, CO Metropolitan Statistical Area.
On September 12, 2013, the county was subject to severe flooding in the area that destroyed dozens of homes, prompted immediate evacuations and closed down major routes such as U.S. Highway 287 after a bridge collapsed going into the city.
The municipality of Broomfield was incorporated in 1961 in the southeastern corner of Boulder County. It received its name from the broomcorn grown in the area. Over the next three decades, the city grew through annexations, many of which crossed the county line into three adjacent counties: Adams, Jefferson and Weld. In the 1990s, city leaders began to push for the creation of a separate county to avoid the inefficiencies of dealing with four separate court districts, four different county seats, and four separate county sales tax bases. It also had longstanding political differences with Boulder County, which impelled it to separate. Broomfield reasoned that it could provide services more responsively under its own county government, and sought an amendment to the Colorado State Constitution to create a new county. The amendment was passed in 1998, after which a three-year transition period followed. On November 15, 2001, Broomfield County became the 64th, newest and smallest county of Colorado.