THE BLAINE COUNTY LAND BRIEF
Land in the
Glaciated Northern Grasslands setting.
Blaine County has 4,227.5 square miles of land in Montana. 6 mapped landscape regions meet across Blaine County: Glaciated Northern Grasslands, Foothill Grassland, Missouri Breaks Woodland-Scrubland, among others.
Glaciated plains bridge the wetter eastern prairie and the drier, more broken Great Plains. Numerous prairie potholes and other seasonal or persistent wetlands are characteristic regional landforms.
Regional context: Northwestern Glaciated Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Blaine County intersects 6 mapped regional units. The largest mapped shares are:
- Glaciated Northern Grasslands64.3%
- Foothill Grassland9.9%
- Missouri Breaks Woodland-Scrubland7.9%
- Montana Central Grasslands7.9%
- Cherry Patch Moraines7.3%
Northwestern Great Plains in Blaine County
Rolling semiarid plains are punctuated by buttes, badlands and river breaks. Much of the regional terrain developed on sandstone, siltstone and shale without the leveling influence of continental glaciers.
Read the regional source ↗Middle Rockies in Blaine County
Forested mountain ranges rise above grassy or shrubby intermountain valleys. The Middle Rockies combine alpine high country, partly wooded foothills and valleys supplied by mountain streams.
Read the regional source ↗Finding your parcel within Blaine County
The atlas lists 11 cities, towns, townships, and Census communities associated with Blaine County, including Fort Belknap Agency, Hays, Lodge Pole. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Blaine County by land and water
The Census records 11.2 square miles of water within Blaine County, or 0.3% of its total area. That share is close to Blaine County’s 0.3%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Blaine County has 10,113.7 times the land area of nearby Harlem city (0.42 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Chouteau County, Fergus County, Hill County, Phillips County within Montana. A tract near one of these lines should be matched to the county identifier on its own records.

