Broomfield is a combined city and county in the Denver Area of Colorado. Understand Get in By plane Rocky Mountain Metropolitan Airport (IATA: BJC), 39.908889°, -105.117222°. the closest airport to Downtown Denver. General aviation. Get around See Rocky Flats National Wildlife Refuge, 39.89°, -105.22°. Grasslands, shrublands and wetlands 2019-02-03 Do Buy FlatIron Crossing, 39.933°, -105.133°. Shopping Mall 2019-02-03 Eat Drink Sleep Renaissance Boulder Flatiron Hotel, 500 Flatiron Blvd., 39.9269°, -105.1296°, +1 303-464-8400. 2019-02-03 Connect Go next Westminster (Colorado) Boulder Denver