1940s Maps of Ada County, Idaho

Explore 15 historic maps of Ada County from the 1940s. These maps offer a rare glimpse into what life looked like during the 1940s — 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 Ada County's landscape evolved across the 1940s, 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 1940s, 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 Ada County's history through authentic maps from the 1940s. This is your window into the past.


Ada County, ID maps

(15)
  1. 1947 Map of Jackass Butte, 1971 Print
    1947 Map of Jackass Butte, 1971 Print
    1947 Jackass Butte
    1971 Print · USGS
    The Snake River canyon and the high desert bluffs of Owyhee County come alive in this late 1940s survey. Researchers can trace the path of the historic Emigrant Trail and locate local landmarks like Brooks Ranch, Birch Creek Sch, and Rabbit Springs.
    2 unique versions available

  2. 1947 Map of Wild Horse Butte, 1973 Print
    1947 Map of Wild Horse Butte, 1973 Print
    1947 Wild Horse Butte
    1973 Print · USGS
    The Snake River canyon near the Ada and Owyhee county line comes into focus in the late 1940s. Researchers can trace early river crossings at Swan Falls and the Ferry, or locate natural landmarks like Wild Horse Butte and Thomas Flats.

  3. 1947 Map of Dorsey Butte, 1979 Print
    1947 Map of Dorsey Butte, 1979 Print
    1947 Dorsey Butte
    1979 Print · USGS
    Elmore County's high desert landscape is captured here in the late 1940s as irrigation projects transformed the arid basin. Researchers can trace the local water economy through the High Line Canal and locate the historic Hayland Sch near Chattin Hill.

  4. 1948 Map of Castle Butte
    1948 Map of Castle Butte
    1948 Castle Butte
    1948 Print · USGS
    Owyhee County ranching and transit corridors are captured here in the late 1940s as the high plateau supported isolated homesteads and water projects. Researchers can trace the historic Emigrant Trail and locate local landmarks such as the Castle Creek Sch, Morgan Place, and the site of Clarks Ferry.
    2 unique versions available

  5. 1948 Map of Big Foot Butte
    1948 Map of Big Foot Butte
    1948 Big Foot Butte
    1948 Print · USGS
    Ada County's high desert landscape was still a vast open range in the late 1940s, defined by volcanic landmarks and scarce water. Trace the primitive road network and survey benchmarks past Big Foot Butte to Tadpole Lake and Rabbit Creek.
    4 unique versions available

  6. 1948 Map of Wild Horse Butte
    1948 Map of Wild Horse Butte
    1948 Wild Horse Butte
    1948 Print · USGS
    The high desert canyon of the Snake River forms the divide between Ada and Owyhee counties in the late 1940s. Researchers can trace the river's path past Wild Horse Butte and Swan Falls to locate old water sources like Fossil Cr.

  7. 1948 Map of Jackass Butte
    1948 Map of Jackass Butte
    1948 Jackass Butte
    1948 Print · USGS
    The Snake River canyon in Owyhee County was a critical corridor for both pioneers and post-war irrigators during the late 1940s. Researchers can trace the path of the Emigrant Trail or locate local landmarks like Brooks Ranch and Birch Creek Sch.

  8. 1948 Map of Dorsey Butte
    1948 Map of Dorsey Butte
    1948 Dorsey Butte
    1948 Print · USGS
    Elmore County during the late 1940s reveals a quiet landscape of high desert flats and river borders just as postwar ranching was modernizing. Researchers can locate the Hayland Sch, a private Landing Strip, and the rugged landmarks of Dorsey Butte and Chattin Hill.

  9. 1948 Map of Big Foot Butte, 1952 Print
    1948 Map of Big Foot Butte, 1952 Print
    1948 Big Foot Butte
    1952 Print · USGS
    In the late 1940s, the Snake River canyon served as the heart of a transforming Idaho ranching and irrigation landscape. Researchers can trace the path of the Emigrant Trail or locate vanished landmarks like Birch Creek School and the Brooks Ranch.

  10. 1948 Map of Sinker Butte, 1966 Print
    1948 Map of Sinker Butte, 1966 Print
    1948 Sinker Butte
    1966 Print · USGS
    Owyhee County's high desert reveals its frontier history in the late 1940s, marked by the intersection of early pioneer routes and the deep canyon of the Snake River. Historians can trace the Emigrant Trail past the Otter Massacre Site and locate remote outposts like Montini Ranch.
    2 unique versions available

  11. 1948 Map of Little Joe Butte, 1976 Print
    1948 Map of Little Joe Butte, 1976 Print
    1948 Little Joe Butte
    1976 Print · USGS
    Ada County’s high desert landscape comes into focus during the late 1940s, a time when the region remained largely open rangeland. Researchers can trace early drainage patterns and land markers near Wind Butte, Little Joe Butte, and Corder Creek.

  12. 1949 Map of Sinker Butte
    1949 Map of Sinker Butte
    1949 Sinker Butte
    1949 Print · USGS
    The Owyhee desert meets the canyon of the Snake River in the late 1940s, revealing a landscape defined by pioneer trails and ranching. Trace the path of the Emigrant Trail past the Otter Massacre Site and the remote Gabica Ranch.

  13. 1949 Map of Little Joe Butte
    1949 Map of Little Joe Butte
    1949 Little Joe Butte
    1949 Print · USGS
    The high desert of southwestern Idaho is captured here in the late 1940s, showing a landscape shaped by seasonal water and volcanic features. Genealogists and researchers can trace the drainage of Corder Creek and Rabbit Cr near landmarks like Wind Butte and Little Joe Butte.

  14. 1949 Map of Oreana, 1952 Print
    1949 Map of Oreana, 1952 Print
    1949 Oreana
    1952 Print · USGS
    Owyhee County ranching and the deep Snake River canyon are captured here in the post-war era. Researchers can trace the path of the Emigrant Road and locate historical landmarks like the Otter Massacre Site, Oreana, and local family ranch sites.
    2 unique versions available

  15. 1949 Map of Robie Creek, 1986 Print
    1949 Map of Robie Creek, 1986 Print
    1949 Robie Creek
    1986 Print · USGS
    The high country northeast of Boise is captured here in the early seventies, showing a landscape of mineral prospects and forest summits. Trace old mining activity at Bumblebee Mine or locate historical routes near Davidson Ranch and Aldape Summit.

End of results
Showing maps 1-15 of 15

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Frequently asked questions

  • What are the different types of historical maps available for Ada County?
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