1800s (19th Century) Maps of Lewis and Clark County, Montana
Explore 7 historic maps of Lewis and Clark County from the 1800s (19th Century). These maps offer a rare glimpse into what life looked like during the 1800s — 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 Lewis and Clark County's landscape evolved across the 1800s, 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 1800s, 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 Lewis and Clark County's history through authentic maps from the 1800s. This is your window into the past.
Lewis and Clark County, MT maps
(7)- 1886 Map of Great Falls
1886 Great Falls1886 Print · USGSCentral Montana in the mid-1880s is defined by its great river systems and the early footprints of frontier outposts. Researchers can trace the early development of Great Falls, find the site of St. Peter's Mission, and locate river settlements like Truly and Fort Shaw.4 unique versions available - 1886 Map of Fort Logan
1886 Fort Logan1886 Print · USGSCentral Montana in the mid-1880s was a landscape of military outposts and early mining camps. Researchers can trace the frontier development of Radersburg and Crow Creek City or locate the historic military presence at Ft Logan.5 unique versions available - 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
1899 Helena1899 Print · USGSThe Montana capital and its surrounding gold and silver districts are documented here just before the new century. Genealogists and historians can trace rail lines like the Great Northern R. R. to active sites like Fort Harrison, the Winscott Mine, and Montana City.3 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.
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