Home » Gallatin Featured County Gallatin Population: 11,608 (2021) Elevation: 4,459' Average Income: $72,921 (2021) Belgrade Population: 3,054 (2020) Elevation: 7,218' Average Income: $94,375 (2021) Big Sky Population: 54,539 (2021) Elevation: 4,816' Average Income: $67,354 (2021) Bozeman Population: 689 (2021) Elevation: 3,685' Average Income: $36,875 (2021) Bridger Population: 4,859 (2020) Elevation: 4,718' Average Income: $98,460 (2021) Four Corners Population: 798 (2020) Elevation: 4,957' Average Income: $61,094 (2021) Gallatin Gateway Population: 2,128 (2021) Elevation: 4,246' Average Income: $60,625 (2021) Manhattan Population: 1,991 (2021) Elevation: 4,075' Average Income: $70,405 (2021) Three Forks Population: 1,269 (2021) Elevation: 6,664' Average Income: $55,403 (2021) West Yellowstone Gallatin County