Old Maps of Boulder, Montana for Metal Detecting
Plan your next treasure hunt with 17 historic maps of Boulder. Find old homesites, ghost towns, trails, and gathering spots that may be lost to time — perfect for identifying promising metal detecting locations.
- Locate forgotten sites: Uncover places like long-lost settlements, abandoned rail lines, or gathering spots.
- Plan better hunts: Use map overlays combined with LiDAR or satellite views to narrow in on historically rich areas.
- Made for detectorists: Thousands of hobbyists use these maps to discover relics, coins, and hidden history.
Use these historic maps to boost your research and find new opportunities beneath the surface of Boulder.
Boulder, MT maps
(17)- 1889 Map of Helena
1889 Helena1889 Print · USGSThe Montana territory is caught in a moment of feverish railroad and mining expansion just before the close of the century. Genealogists and historians can trace early mountain routes and rail stations through settlements like Marysville, Wickes, and the bustling territorial hub of Helena. - 1893 Map of Helena
1893 Helena1893 Print · USGSMontana's gold and silver boom is captured here in the late nineteenth century, showing the rail lines and mining camps radiating from the territorial capital. Genealogists and historians can trace the early layout of Helena or locate vanished sites like Blackfoot City and Gloster.2 unique versions available - 1899 Map of Boulder
1899 Boulder1899 Print · USGSJefferson County was at the peak of its mining and railroad boom when this survey was conducted. Genealogists and historians can trace the foundations of Boulder and Wickes, as well as numerous hard-rock sites like the Hidden Treasure Mine and Amazon Mill.4 unique versions available - 1899 Map of Helena, 1956 Print
1899 Helena1956 Print · USGSThe Montana gold country and the Continental Divide appear here at the close of the nineteenth century. Genealogists and historians can trace the mining and rail networks connecting Helena and Butte, including Pikes Peak Mill, Marysville, and Ft. Harrison. - 1903 Map of Helena
1903 Helena1903 Print · USGSMontana's mining heartland comes alive at the dawn of the new century, from the state capital to the copper-rich summits above the Silver Bow. Trace the early rail lines serving Marysville, locate the historic barracks of Ft. Harrison, and follow the mountain trails through Mullan Pass.4 unique versions available - 1947 Map of Butte, 1949 Print
1947 Butte1949 Print · USGSWestern Montana at the peak of its rail-and-river era shows the vital connections between the mining and industrial centers of Butte and Helena. Researchers can trace the three major railroad lines serving mountain settlements like Garrison, Philipsburg, and Warm Springs.2 unique versions available - 1954 Map of Boulder, 1956 Print
1954 Boulder1956 Print · USGSThe Boulder valley in the mid-fifties shows a landscape of mountain ranching and railway life. Genealogists and researchers can trace family holdings at the Keogh Ranch and Mc Cauley Ranch, or locate historic sites like the May Day Mine and Boulder Cem.4 unique versions available - 1958 Map of Butte
1958 Butte1958 Print · USGSWestern Montana's mining and rail corridors are captured in the late fifties, from the urban bustle of the Copper King cities to high mountain passes. Researchers can trace the path of the Milwaukee St Paul and Pacific through Deer Lodge and locate remote outposts like Potomac Post Office.5 unique versions available - 1960 Map of Butte
1960 Butte1960 Print · USGSWestern Montana at the dawn of the sixties is defined by its industrial mining hubs and the railroads that connect them. Genealogists and historians can trace the routes of the Milwaukee Road through Butte or locate smaller settlements like Southern Cross and Bearmouth. - 1962 Map of Butte
1962 Butte1962 Print · USGSWestern Montana in the early sixties remains a landscape of industrial muscle and high-mountain passes. Trace the rail lines of the Northern Pacific through Deer Lodge and the mining history around Anaconda and Philipsburg. - 1985 Map of Boulder West, 1986 Print
1985 Boulder West1986 Print · USGSThe mountain terrain of Jefferson County comes into focus in the mid-1980s as it transitions from the Boulder valley into the forest. Researchers can trace the courses of the Boulder River and Little Boulder River or locate several Prospect sites and the high Doe Ridge. - 1985 Map of Boulder East, 1986 Print
1985 Boulder East1986 Print · USGSBoulder and its surrounding valley are captured in the mid-1980s as a community shaped by the river and the forest. Researchers can trace the town cemetery Cem, the landmark Boulder Hot Springs, and local mountain peaks like Bull Mountain. - 1994 Map of Butte North
1994 Butte North1994 Print · USGSWestern Montana in the nineties was a landscape defined by ranching legacy and high-altitude mining. Genealogists and historians can trace institutional history at the Deer Lodge Prison Farm or locate old claims like the Saratoga Mine and Morning Glory Mine. - 1996 Map of Boulder West, 1998 Print
1996 Boulder West1998 Print · USGSJefferson County mining and forest lands are captured here in the mid-1990s, centered on the rugged terrain west of Boulder. Local historians can trace early mineral claims at the May Day Mine or Springtime Mine and locate the Elder Creek Picnic Area. - 1996 Map of Boulder East, 1998 Print
1996 Boulder East1998 Print · USGSJefferson County's mountain-and-valley landscape is documented here in the mid-1990s, showcasing the development around Boulder and the surrounding forest. Genealogists and historians can locate the Cemetery, the Boulder River School & Hospital, and remote sites like Murphy Ranch. - 2024 Map of Boulder West, 2024 Print
2024 Boulder West2024 Print · USGSJefferson County’s high country comes into focus in this recent survey of the mountains near Boulder. Local researchers can trace old mountain routes like Silver Bell Rd and explore the rugged drainage of Little Boulder River and Whitetail Deer Creek. - 2024 Map of Boulder East, 2024 Print
2024 Boulder East2024 Print · USGSThe town of Boulder and the surrounding Boulder Valley are captured here as they appear today, framed by the Elkhorn Mountains. Researchers can trace local landmarks like Boulder Cem and Boulder Airport or explore named routes like Chinese Diggings Rd.
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