| Official Name: | Gallatin Gateway, Montana |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Montana#USA |
| Pushpin Label: | Gallatin Gateway |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Montana |
| Subdivision Type2: | County |
| Subdivision Name2: | Gallatin |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 15.40 |
| Area Land Km2: | 15.15 |
| Area Water Km2: | 0.25 |
| Area Total Sq Mi: | 5.95 |
| Area Land Sq Mi: | 5.85 |
| Area Water Sq Mi: | 0.10 |
| Population As Of: | 2020 |
| Population Total: | 967 |
| Population Density Sq Mi: | 165.33 |
| Timezone: | Mountain (MST) |
| Utc Offset: | -7 |
| Timezone Dst: | MDT |
| Utc Offset Dst: | -6 |
| Elevation Ft: | 4974 |
| Coordinates: | 45.5914°N -111.1975°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 59730 |
| Area Code: | 406 |
| Blank Name: | FIPS code |
| Blank Info: | 30-29875 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2583809 |
| Population Density Km2: | 63.84 |
Gallatin Gateway is a census-designated place (CDP) in Gallatin County, Montana, United States. As of the 2010 census it had a population of 856.[2] Elevation is 4,953 ft (1,510 m).
The community is located along U.S. Route 191 in the valley of the Gallatin River, a north-flowing tributary of the Missouri River. US 191 leads north, then east to Bozeman and south to Big Sky. According to the U.S. Census Bureau, the CDP has a total area of 15.4sqkm, of which 15.1sqkm is land and 0.3sqkm, or 1.83%, is water.[2]
Salesville was one of the pioneer towns, named for Z. Sales, who secured a saw mill started by J. J. Tomlinson, continuing the business on the West Gallatin river several years. With his family, he established the town on his property, the name of the town being changed in 1927 to Gallatin Gateway,[3] by The Milwaukee Road, when the town became the terminus of the branch line from Three Forks, carrying passengers for the trip through Yellowstone National Park by way of Gallatin Canyon.
The passenger depot that was built at that time was established in the commodious Gallatin Gateway Inn built by the railroad. A good brick school house, some substantial business blocks and comfortable homes are found there.[4] Opening June 17, 1927, The Gallatin Gateway Inn was touted as one of the most luxurious and beautiful hotels of the day. In 1980 the Inn received Historic Landmark designation after an extensive restoration effort (the Milwaukee Road left the Northwestern U.S. that year).