Rocky Mountain Metropolitan Airport (IATA: BJC, ICAO: KBJC, FAA LID: BJC) is a public-use airport located near Broomfield, Colorado, United States. The airport is owned and operated by Jefferson County and is situated midway between Denver and Boulder on U.S. Highway 36. It is located sixteen miles northwest of the central business district of Denver, and is the closest airport to downtown Denver. The airport covers 1,700 acres (688 ha) and has three runways. Formerly known as Jefferson County Airport or Jeffco Airport, the airport was renamed Rocky Mountain Metropolitan Airport on October 10, 2006 although it is sometimes referred to as Rocky Mountain Regional Airport, e.g.