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Historical Maps of Boulder County, Colorado

What stories do these 277 old maps tell about Boulder County's past? From 1902 to present day, these maps reveal the evolution of streets, neighborhoods, iconic landmarks, and natural features in stunning high-res detail. Whether you're a history enthusiast, genealogist, or professional in education, environmental work, or architecture, these maps are perfect for exploration, research, and discovery.

Discover Boulder County's history through maps:

  • Trace Boulder County's growth: Explore earlier and latest maps and editions to uncover how the region changed over time.
  • Examine technical details: Each map includes its creators, publishers, scale, dimensions, and full source information.
  • Layer maps with modern tools & imagery: Compare historical maps to modern-day with high-resolution satellite imagery and detailed LiDAR layers.
  • Sourced from trusted archives: Carefully preserved and digitized by institutions like the United Stated Geological Survey and the US Library of Congress.
  • Access in any format: View and explore in high resolution, download for offline use, or order a museum-quality print for yourself or a loved one.

Begin your journey into Boulder County's history with these remarkable must-see maps.

Boulder County, CO maps

(277)

  1. 1902 Map of Boulder, 1957 Print
    1902 Map of Boulder, 1957 Print
    1902 Boulder
    1957 Print · USGS
    Covers portions of Boulder County, including Boulder, and others.
  2. 1904 Map of Boulder
    1904 Map of Boulder
    1904 Boulder
    1904 Print · USGS
    Covers portions of Boulder County, including Boulder, and others.
  3. 1904 Map of Boulder, 1913 Print
    1904 Map of Boulder, 1913 Print
    1904 Boulder
    1913 Print · USGS
    Covers portions of Boulder County, including Boulder, and others.
  4. 1904 Map of Boulder, 1926 Print
    1904 Map of Boulder, 1926 Print
    1904 Boulder
    1926 Print · USGS
    Covers portions of Boulder County, including Boulder, and others.
  5. 1904 Map of Boulder, 1936 Print
    1904 Map of Boulder, 1936 Print
    1904 Boulder
    1936 Print · USGS
    Covers portions of Boulder County, including Boulder, and others.
  6. 1904 Map of Boulder, 1941 Print
    1904 Map of Boulder, 1941 Print
    1904 Boulder
    1941 Print · USGS
    Covers portions of Boulder County, including Boulder, and others.
  7. 1904 Map of Boulder, 1947 Print
    1904 Map of Boulder, 1947 Print
    1904 Boulder
    1947 Print · USGS
    Covers portions of Boulder County, including Boulder, and others.
  8. 1904 Map of Niwot
    1904 Map of Niwot
    1904 Niwot
    1904 Print · USGS
    Covers portions of Boulder County, including Niwot, Weld County, Broomfield County, and others.
  9. 1904 Map of Niwot, 1923 Print
    1904 Map of Niwot, 1923 Print
    1904 Niwot
    1923 Print · USGS
    Covers portions of Boulder County, including Niwot, Weld County, Broomfield County, and others.
  10. 1904 Map of Niwot, 1945 Print
    1904 Map of Niwot, 1945 Print
    1904 Niwot
    1945 Print · USGS
    Covers portions of Boulder County, including Niwot, Weld County, Broomfield County, and others.
Showing maps 1-10 of 277

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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?