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Historical Maps of Allegheny County, Pennsylvania

What stories do these 255 old maps tell about Allegheny County's past? From 1901 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 Allegheny County's history through maps:

  • Trace Allegheny 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 Allegheny County's history with these remarkable must-see maps.

Allegheny County, PA maps

(255)

  1. 1901 Map of Beaver, 1958 Print
    1901 Map of Beaver, 1958 Print
    1901 Beaver
    1958 Print · USGS
    Covers portions of Allegheny County, including Beaver, and others.
  2. 1902 Map of Brownsville
    1902 Map of Brownsville
    1902 Brownsville
    1902 Print · USGS
    Covers portions of Allegheny County, including Brownsville, Westmoreland County, and others.
  3. 1904 Map of Beaver
    1904 Map of Beaver
    1904 Beaver
    1904 Print · USGS
    Covers portions of Allegheny County, including Beaver, and others.
  4. 1904 Map of Beaver, 1909 Print
    1904 Map of Beaver, 1909 Print
    1904 Beaver
    1909 Print · USGS
    Covers portions of Allegheny County, including Beaver, and others.
  5. 1904 Map of Beaver, 1914 Print
    1904 Map of Beaver, 1914 Print
    1904 Beaver
    1914 Print · USGS
    Covers portions of Allegheny County, including Beaver, and others.
  6. 1904 Map of Beaver, 1930 Print
    1904 Map of Beaver, 1930 Print
    1904 Beaver
    1930 Print · USGS
    Covers portions of Allegheny County, including Beaver, and others.
  7. 1904 Map of Beaver, 1938 Print
    1904 Map of Beaver, 1938 Print
    1904 Beaver
    1938 Print · USGS
    Covers portions of Allegheny County, including Beaver, and others.
  8. 1904 Map of Beaver, 1944 Print
    1904 Map of Beaver, 1944 Print
    1904 Beaver
    1944 Print · USGS
    Covers portions of Allegheny County, including Beaver, and others.
  9. 1904 Map of Burgettstown, 1958 Print
    1904 Map of Burgettstown, 1958 Print
    1904 Burgettstown
    1958 Print · USGS
    Covers portions of Allegheny County, including Burgettstown, Beaver County, and others.
  10. 1904 Map of Carnegie, 1954 Print
    1904 Map of Carnegie, 1954 Print
    1904 Carnegie
    1954 Print · USGS
    Covers portions of Allegheny County, including Carnegie, Washington County, and others.
Showing maps 1-10 of 255

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Frequently asked questions

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