Montana

Blaine

7,044
2020 population
1920
first census record
11
census records

About Blaine

Blaine, Montana, first appears in the United States federal census in 1920, when it recorded a population of 9,057. At the most recent census, in 2020, its population stood at 7,044.

Its recorded population peaked at 9,566 in 1940, and has since declined by roughly 26 percent.

On the ground today, 4 documented military engagements have been recorded within the county, among them Battle of the Little Rockies — Assiniboine (1872), Nez Perce War — Battle of Bear Paw Mountains 1877, Battle of Frenchman's Creek 1879, and 10 places are listed on the National Register of Historic Places.

Population by decade

Census YearPopulationChart
20207,044
20106,491
20007,009
19906,728
19806,999
19706,727
19608,091
19508,516
19409,566
19309,006
19209,057
Source

Population data from the United States decennial census, U.S. Census Bureau (public domain).

Battles & engagements in Blaine

Military engagements that took place in Blaine, Montana.

Battle of the Little Rockies — Assiniboine (1872)
1872
Nez Perce War — Battle of Bear Paw Mountains 1877
1877
Battle of Frenchman's Creek 1879
1879
Gros Ventre Agency Incident (1886)
1886

Historic places in Blaine

National Register of Historic Places listings in Blaine, Montana.

Young Brothers Chevrolet Garage
Chinook
Lodgepole Community Hall
Lodgepole
Scherlie, Anna, Homestead Shack
Turner
Dave's Texaco
Chinook
Browse all Montanahistoric sites ›

Other counties in Montana

Explore census history and historic records for more Montana counties.

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Everything a full report reveals about Blaine County, Montana

This page charts the census history of Blaine County, Montana. A full Aubrey report for an address here pulls together everything the historical record holds about the ground, from the earliest settlement to the twentieth century:

Overview
An interactive map of the location with historic sites, battles and Native heritage plotted, and its full story era by era.
The Land
The historic sites and place names around the location, and how this land was settled and used.
Geology
The bedrock beneath the site, its age and rock type, reaching back millions of years.
LiDAR Terrain
Laser-scanned terrain that reveals earthworks and old features hidden in the landscape.
Conflict & War
The battles, raids and skirmishes fought near here, across every era of American conflict.
The Civil War
The Civil War on this ground, 1861 to 1865: who held it, and the battles, camps and regiments nearby.
The Soldiers
The men who marched from here in the Civil War, named and traced where the record allows.
Native Heritage
The Native nations who held this land, mapped across time from before European contact to today.
Settlement
Who claimed and held this ground, from Indigenous homelands through the colonial powers to the United States.
The Community
How the town grew, who came, and what kind of place it became, traced through the census record.
Rivers & Rail
The rivers, canals and railroads that connected this place between 1830 and 1911.
Notable People
The people born, buried or genuinely tied to this exact place, with their stories.
Historical Maps
Historic maps of the location layered over how it looks today.
Finds & Access
Museum objects tied to the area, and the laws on searching, collecting and access here.
Literature
The old books, county histories and archives that mention this place, quoted with their sources.
Spotlight
A deep dive into the most remarkable, lesser-known history of the place, traced back to the record.
Points of Interest
The most significant historic sites and landmarks near the location, and why they matter.
Timeline
The whole story of the location told era by era, from first peoples to the present day.
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Frequently asked about Blaine

When does Blaine first appear in the US census?
Blaine, Montana first appears in the federal census in 1920, with a recorded population of 9,057.
What is the population of Blaine?
At the most recent federal census (2020), Blaine had a recorded population of 7,044.
When did Blaine's population peak?
Blaine's recorded population peaked at 9,566 in 1940.
Were any battles fought in Blaine?
4 documented military engagements took place in Blaine, including Battle of the Little Rockies — Assiniboine (1872), Nez Perce War — Battle of Bear Paw Mountains 1877, Battle of Frenchman's Creek 1879.
How many historic places are in Blaine?
10 sites are listed on the National Register of Historic Places in Blaine, Montana.
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