Stapleton, Denver Lake Nature Center, one of the nation's largest urban wildlife refuges. As of 2018, Stapleton has a population of around 75,000 residents living amongst 23,500 households. The Northfield section of the development (north of Interstate 70) still has significant residential and commercial development occurring today. The University of Colorado A-Line directly connecting Denver Union Station downtown to Denver International Airport started operating in 2016 and has one stop in Stapleton; the Central Park Station. Stapleton is served by the Central Park commuter rail and bus station, with direct connections to Union Station in downtown and the Denver International Airport via
Orlando International Airport one of the largest commercial airports in the US. In addition, the airport is home to a maintenance base for United Airlines. The airport code MCO stands for the airport's former name, McCoy Air Force Base, a Strategic Air Command (SAC) installation, that was closed in 1975 as part of a general military drawdown following the end of the Vietnam War. In terms of commercial airline service, the Greater Orlando area is also served by Orlando Sanford International Airport (SFB), and more indirectly by Daytona Beach International Airport (DAB), Orlando Melbourne International Airport (MLB), Tampa International Airport (TPA), and St.