| County : | Gallatin County |
| State : | Montana (MT) |
| Land Area : | 2,602.67 sq mi |
| Water Area : | 29.38 sq mi |
| Latitude : | 45.5355586 |
| Longitude : | -111.1734431 |
| Population (2010): | 89,513 |
| Population Estimate (2012) : | 90,339 |
| Population Density : | 34.39/sq mi |
| Housing Units (2012) : | 42,289 |
| Median Household Income (2012) : | $52,211 (Montana : $45,456, USA : $53,046) |
| Median Family Income (2012) : | $67,925 (Montana : $58,951, USA : $64,585) |
| Median House Price (2012) : | $270,500 (Montana : $183,000, USA : $181,400) |
Gallatin County Cities / Towns
| Amsterdam (180) | Belgrade City (7,389) | Big Sky (2,308) |
| Bozeman City (37,280) | Bridger (30) | Churchill (902) |
| Four Corners (3,146) | Gallatin Gateway (856) | Gallatin River Ranch (69) |
| Hebgen Lake Estates (70) | King Arthur Park (738) | Logan (99) |
| Manhattan Town (1,520) | Ponderosa Pines (336) | Sedan (99) |
| Springhill (130) | Three Forks City (1,869) | West Yellowstone Town (1,271) |
| Willow Creek (210) |
Gallatin County Zip Codes
| 59086 (727) | 59714 (18,182) | 59715 (31,567) |
| 59716 (1,798) | 59718 (27,367) | 59730 (1,790) |
| 59741 (4,352) | 59752 (3,431) | 59758 (1,769) |
| 59760 (260) |