1900s (20th Century) Maps of Blaine County, Montana
Explore 132 historic maps of Blaine County from the 1900s (20th Century). These maps offer a rare glimpse into what life looked like during the 1900s — showing old roads, neighborhoods, homes, and landmarks that have changed or disappeared over time.
Whether you're researching your family's past, planning a metal detecting trip, or studying how Blaine County's landscape evolved across the 1900s, these high-resolution maps are a powerful tool for exploring the history of this region.
- Focus on a specific era: All maps on this page are from the 1900s, giving you a focused view of this time period.
- See what’s changed: Compare century-old streets, trails, and buildings to today's modern landscape using overlays and satellite layers.
- Research with precision: Use these maps for genealogy, historical research, land use analysis, or educational projects.
- View, download, or print: Maps are fully viewable online in high resolution, and can be downloaded or printed for your own records.
Start exploring Blaine County's history through authentic maps from the 1900s. This is your window into the past.
Blaine County, MT maps
(132)- 1903 Map of Wayne Creek, 1958 Print
1903 Wayne Creek1958 Print · USGSBlaine County was an open ranching landscape at the turn of the century, defined by the northern plains and the river valley corridor. Trace the early Great Plains rail economy at Montauk along the Great Northern RR and locate pioneer outposts like Nickols Ranch. - 1904 Map of Yantic
1904 Yantic1904 Print · USGSNorthern Montana ranching life is frozen in time on this 1904 survey of the Milk River valley. Researchers can trace early homesteads like Potter's Ranch and Empire Ranch or follow the route of the Great Northern R. R. through Yantic.2 unique versions available - 1904 Map of Chinook
1904 Chinook1904 Print · USGSLife in the Milk River Valley at the dawn of the century revolved around the rail lines and new irrigation canals. Researchers can trace early ranch holdings like Nelson's Ranch and Ronne's Ranch or locate the site of Kerrs Coalmine.2 unique versions available - 1904 Map of Havre
1904 Havre1904 Print · USGSHavre and the Milk River valley are captured in this early century survey as the region transitioned from a frontier military outpost to a railroad-driven settlement. Researchers can trace the original locations of numerous family homesteads like Conley's Ranch and Mc Grew's Ranch, alongside the sprawling Fort Assinniboine Mil. Res..2 unique versions available - 1905 Map of Wayne Creek
1905 Wayne Creek1905 Print · USGSEarly ranching and rail expansion characterize this northern Montana landscape in the first decade of the new century. Researchers can trace historic homesteads like Reddenbacks and Nickols Ranch along the route of the Great Northern R R. - 1905 Map of Harlem
1905 Harlem1905 Print · USGSThe Milk River valley at the turn of the century shows a landscape transitioning from open range to irrigated agriculture and rail-side settlements. Researchers can locate early outposts like Sorterstorm's Ranch and follow the route of the Great Northern R R past Harlem and Madras.2 unique versions available - 1912 Map of Zurich
1912 Zurich1912 Print · USGSNorthern Montana ranchlands and rail towns are captured here in the early twentieth century before the full development of modern irrigation. Genealogists and historians can locate early family-named sites like Corregan Ranch and Kerrs Coalmine along the Great Northern railroad line. - 1912 Map of Thibedeau Lake
1912 Thibedeau Lake1912 Print · USGSNorthern Montana's ranching frontier and rail corridors are captured here just after the turn of the century. Genealogists and historians can trace the early foundations of Havre and Fort Assinniboine, alongside family landmarks like Lohman's Ranch and Connolly Ranch. - 1913 Map of Cherry Ridge
1913 Cherry Ridge1913 Print · USGSNorthern Montana ranching and the Fort Belknap Indian Reservation are captured here during the early twentieth century. Genealogists and historians can locate early homesteads like Arbagasts Ranch and trace the path of the Great Northern railroad.3 unique versions available - 1920 Map of Avery
1920 Avery1920 Print · USGSPhillips and Blaine counties appear here just after the Great War, showing the rural network of the Montana high plains along the Canadian border. Genealogists can locate early community hubs like Caldwell P.O., Turner, and rural schools such as Hubert S.H.. - 1943 Map of Landusky
1943 Landusky1943 Print · USGSPhillips County during the early 1940s is shown here as a landscape of isolated mountain settlements and the wild Missouri Breaks. Researchers can trace the layout of Landusky, the mountain peaks of the Jefferson National Forest, and river landmarks such as Cow Island. - 1953 Map of Havre, 1967 Print
1953 Havre1967 Print · USGSNorthern Montana’s Hi-Line comes into focus in the mid-fifties, centered on the Milk River and the critical Great Northern rail link. Genealogists can trace small sidings and settlements like Assinniboine, Laredo, and Box Elder alongside the Fort Belknap Agency.3 unique versions available - 1954 Map of Taffy Ridge, 1956 Print
1954 Taffy Ridge1956 Print · USGSThe Missouri River breaks through the Fergus County high plains in the mid-1950s, revealing a landscape of high ridges and deep coulees. Researchers can trace the cattle country terrain from Whiskey Ridge down to the Missouri River at Dauphin Rapids.2 unique versions available - 1954 Map of Bird Rapids, 1956 Print
1954 Bird Rapids1956 Print · USGSThe Missouri River breaks are captured here in the mid-1950s, showing the wild river channel before modern alterations. Researchers can trace the exact locations of Castle Bluffs Rapids, Bird Rapids, and early landmarks like Black Butte. - 1954 Map of Cow Island, 1956 Print
1954 Cow Island1956 Print · USGSThe Missouri River breaks of Montana are captured here during the mid-fifties, showing the isolated river valley at the borders of Blaine, Fergus, and Phillips counties. Researchers can locate the Kip Homestead, trace the path of the Jeep Trail, and see the prominent Cow Island in the river's bend.3 unique versions available - 1954 Map of Leroy, 1956 Print
1954 Leroy1956 Print · USGSBlaine County ranching country and the Missouri River breaks are captured here in the mid-fifties. Researchers can locate the Lone Tree Bench Sch, the small settlement of Leroy, and river features like Lone Pine Rapids.2 unique versions available - 1954 Map of Baker Monument, 1956 Print
1954 Baker Monument1956 Print · USGSThe Missouri River breaks of central Montana are captured here during the 1950s era of river basin development. Researchers can trace historic river crossings and infrastructure like the Ferry, the Heller Sch, and early Powerplant (Ruins).2 unique versions available - 1954 Map of Sturgeon Island, 1956 Print
1954 Sturgeon Island1956 Print · USGSThe Missouri River breaks through the northern plains in the mid-1950s, marking the border of Blaine and Fergus Counties. Researchers can trace the river's path past Sturgeon Island and locate isolated landmarks like Gist Ranch and Ervin Ridge.2 unique versions available - 1954 Map of Gallatin Rapids, 1956 Print
1954 Gallatin Rapids1956 Print · USGSThe Missouri River breaks into the Gallatin Rapids and Dauphin Rapids along the Blaine and Fergus county line during the mid-fifties. Researchers can locate early petroleum exploration sites like the Oil Well (Alex) and trace the high country of Whiskey Ridge.2 unique versions available - 1954 Map of Council Island, 1956 Print
1954 Council Island1956 Print · USGSThe Missouri River breaks through the central Montana breaks during the mid-fifties, serving as a boundary for three counties. Local historians can trace early crossing points at Lohse PN Ferry and explore the remote path of Seventy-nine Road.2 unique versions available - 1954 Map of Lewistown, 1967 Print
1954 Lewistown1967 Print · USGSCentral Montana at the height of the mid-century rail era reveals a landscape shaped by the Judith River and high mountain ranges. Trace the old lines of the Great Northern through Lewistown and Denton, or locate sites like Giltedge and Landusky.3 unique versions available - 1956 Map of Maddux, 1957 Print
1956 Maddux1957 Print · USGSBlaine County ranching country is captured here during the mid-fifties, showing the isolated schoolhouses and mountain ranges of north-central Montana. Researchers can locate remote sites like Maddux, T U Ranch, and the Hungry Hollow Sch scattered across this high-plains landscape. - 1956 Map of Rattlesnake, 1957 Print
1956 Rattlesnake1957 Print · USGSBlaine County's high country is captured here during the mid-1950s, showing the intersection of the Bearpaw Mountains and the surrounding ranching basins. Researchers can trace rural landmarks like the Rattlesnake Sch, the Four O'Clock Reservoir, and the distinctive Runyan Bench.3 unique versions available - 1956 Map of Lloyd, 1958 Print
1956 Lloyd1958 Print · USGSThe northern slopes of the Bearpaw Mountains come into focus in the mid-1950s, showing a landscape of high-plains ranching and early energy development. Genealogists and researchers can locate old rural school sites like Logie Sch and Lloyd Sch or trace the early Gas Wells near Threemile Coulee.2 unique versions available - 1956 Map of Cleveland, 1958 Print
1956 Cleveland1958 Print · USGSThe foothills of the Bear Paw Mountains in the late fifties reveal a landscape of isolated ranching communities and significant historical sites. Researchers can trace the location of the Chief Joseph Battleground and local social hubs like Cleveland and South Fairview Sch.3 unique versions available
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