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1940s Maps of Boulder County, Colorado

Explore 9 historic maps of Boulder 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 Boulder 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 Boulder County's history through authentic maps from the 1940s. This is your window into the past.

Boulder County, CO maps

(9)
  1. 1940 Map of Lafayette
    1940 Map of Lafayette
    1940 Lafayette
    1940 Print · USGS
    Covers Boulder County, including Thornton, Westminster, and other nearby areas
  4. 1942 Map of Eldorado Springs
    1942 Map of Eldorado Springs
    1942 Eldorado Springs
    1942 Print · USGS
    Covers Boulder County, including Arvada, Boulder, and other nearby areas
    4 unique versions available
  7. 1942 Map of Louisville
    1942 Map of Louisville
    1942 Louisville
    1942 Print · USGS
    Covers Boulder County, including Westminster, Boulder, and other nearby areas
    3 unique versions available
  10. 1942 Map of Nederland, 1954 Print
    1942 Map of Nederland, 1954 Print
    1942 Nederland
    1954 Print · USGS
    Covers Boulder County, including Nederland, Caribou City, and other nearby areas
    6 unique versions available
  13. 1942 Map of Tungsten, 1955 Print
    1942 Map of Tungsten, 1955 Print
    1942 Tungsten
    1955 Print · USGS
    Covers Boulder County, including Nederland, Coal Creek, and other nearby areas
    5 unique versions available
  16. 1944 Map of Lafayette
    1944 Map of Lafayette
    1944 Lafayette
    1944 Print · USGS
    Covers Boulder County, including Thornton, Westminster, and other nearby areas
  19. 1944 Map of Nederland
    1944 Map of Nederland
    1944 Nederland
    1944 Print · USGS
    Covers Boulder County, including Nederland, Caribou City, and other nearby areas
    2 unique versions available
  22. 1944 Map of Eldorado Springs
    1944 Map of Eldorado Springs
    1944 Eldorado Springs
    1944 Print · USGS
    Covers Boulder County, including Arvada, Boulder, and other nearby areas
    2 unique versions available
  25. 1944 Map of Tungsten
    1944 Map of Tungsten
    1944 Tungsten
    1944 Print · USGS
    Covers Boulder County, including Nederland, Coal Creek, and other nearby areas
End of results
Showing maps 1-9 of 9

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Frequently asked questions

  • What are the different types of historical maps available for Boulder County?
  • What is the oldest map of Boulder County?
  • Where can I purchase historical maps of Boulder County for my home or office?
  • Where can I download high-res historical maps of Boulder County?
  • Are there historical topographic maps available for Boulder County?
  • Is there historical aerial imagery available for Boulder County?
  • Where are historical maps of Boulder County sourced from?