Big Sky is composed of three distinct areas: The Mountain Village, the Meadow Village and the Gallatin Canyon.

The Mountain Village is centered around the two ski resorts, Big Sky and Moonlight Basin. There are several hotels and a myriad of condominium complexes. There are also hundreds of private and vacation homes, shops, bars and restaurants.  A medical facility is located in Mountain Village in the Big Sky Resort.

The Meadow Village is the closest thing to "downtown Big Sky."  Most of the full-time, year-round residents live here, The Big Sky Golf Course, a public Arnold Palmer-designed course, is situated in the center of Meadow Village.  Just off the golf course on Spotted Elk Road sits the historic Crail Ranch Homestead Museum that captures the area's homesteading past.  Commercial areas located in the Meadow Village are:  the Town Center, the Meadow Center, and Westfork Meadows, where there are  restaurants, shops, 2 grocery stores, the post office, a hotel, and banks.  A multi-denominational church, The Big Sky Chapel, is located on Little Coyote Road across from the Meadow Village Shopping center.  Two medical facilities can be found in Meadow Village.

The Gallatin Canyon stretches along US 191 and the Gallatin River. There are several hotels, restaurants, shops and bars, dude ranches, and two gas stations.  The school district campus and facilities are located in the canyon south of Big Sky proper.  The community theater and library are housed on the district campus.  In addition, the Mormon Church can be found within the Ramshorn subdivision on 191.

There is a free snow shuttle system which runs throughout the community.