Gallatin County
As of the 2020 census it was the second-most populous county in Montana. Its county seat is Bozeman.
Founded in 1865
It was named by Meriwether Lewis in 1805 for Albert Gallatin, the United States Treasury Secretary who formulated the Lewis and Clark Expedition.
During the territorial era, a small patch of land known as "Lost Dakota" existed as a remote exclave of Dakota Territory until it was transferred to Gallatin County, Montana Territory, in 1873.
The county's prominent geographical features are the Bridger mountains in the north, and the Gallatin mountains and Gallatin River in the south.
At the southern end of the county, West Yellowstone's entrance into Yellowstone National Park accounts for around half of all park visitors.
The county attained its present boundaries in 1978, when part of the former Yellowstone National Park county-equivalent was dissolved and apportioned between Gallatin County and Park County. Gallatin County received 99+ square miles of land area and 0.119 square miles of water area, whereas Park County received 146+ square miles of land area and 0.608 square miles of water area. The geographies transferred are known now as Census Tract 14 in Gallatin County, and as Census Tract 6 in Park County.
Cities, Towns and Other Communities
Cities
Belgrade ~ Bozeman ~ Three Forks
Towns
Manhattan ~ West Yellowstone
Census-designated Places
Amsterdam (formerly Amsterdam-Churchill) ~ Big Sky ~ Bridger ~
Churchill (formerly Amsterdam-Churchill) ~ Four Corners ~ Gallatin Gateway ~ Gallatin River Ranch ~ Hebgen Lake Estates ~
King Arthur Park ~ Logan ~ Ponderosa Pines ~ Sedan ~ Springhill ~ Willow Creek
Unincorporated Communities
Hillman ~ Maudlow
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Gallatin County Data
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Biographies
A-K | L-Z
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 Birth Records
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Cemeteries
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Census Records
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Church Histories / Records
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County Records
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Death Records
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Family Bibles and Records
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History Topics
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Marriages
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Military Records
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Miscellaneous Data
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News Gleanings
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Obituaries and Death Notices
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School Records
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Wills/Probate Records
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Website Updates
September 2024
Birth Announcements: Foreman son
Birth Records: Birth Register
Book 1 - 1903 -1906; A-D (complete)
Census Records:
1880 Mortality Schedule (complete)
Death Records:
Death certificates 1907-1954 (in process)
Marriage
Announcements: Ponsford - Lundwall, McIntosh - Randall,
Williams - Castner, Harrison - Davis, Dawson - Davis
Obituaries and Death Notices: I. N. Parker, Mrs.
Blackmore, Cox infant son, Tracey son, Mr. Ford, William W. Maryatt,
Miss Helen A. Leonard
Previous Updates
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Surrounding Counties
Broadwater County - north
Jefferson County - northwest
Madison County - west
Meagher County - northeast
Park County - east
Fremont County, Idaho - southwest
Park County, Wyoming - southeast
Teton County, Wyoming - southeast
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