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Old Maps of Allegheny County, Pennsylvania

Explore 91 old maps of Allegheny County, spanning from 1901 to today. These high-resolution historic maps reveal how streets, neighborhoods, landmarks, and natural features evolved over time — perfect for genealogy, metal detecting, research, and local history exploration.

What you can do with these maps:

  • See how Allegheny County changed over time: Compare historical maps to modern-day views to trace roads, homesites, rail lines & more.
  • View detailed metadata: Each map includes creators, publishers, year, scale, and archive source.
  • Overlay maps with satellite & LiDAR: Visualize the past alongside modern tools to explore terrain & human change.
  • Trusted historical sources: Maps sourced from the USGS, Library of Congress, and other archives.
  • Access maps your way: View online, download high-res files, or order prints for personal or research use.

Start exploring old maps of Allegheny County to uncover forgotten places, hidden landmarks, and the deep history beneath your feet.

Allegheny County, PA maps

(91)
  1. 1901 Map of Beaver, 1958 Print
    1901 Map of Beaver, 1958 Print
    1901 Beaver
    1958 Print · USGS
    Covers Allegheny County, including Moon Township, Center Township, and other nearby areas
  3. 1902 Map of Brownsville
    1902 Map of Brownsville
    1902 Brownsville
    1902 Print · USGS
    Covers Allegheny County, including Monessen, California, and other nearby areas
  5. 1904 Map of Mc Keesport
    1904 Map of Mc Keesport
    1904 Mc Keesport
    1904 Print · USGS
    Covers Allegheny County, including Pittsburgh, Penn Hills, and other nearby areas
  7. 1904 Map of Beaver
    1904 Map of Beaver
    1904 Beaver
    1904 Print · USGS
    Covers Allegheny County, including Moon Township, Center Township, and other nearby areas
  9. 1904 Map of Carnegie, 1954 Print
    1904 Map of Carnegie, 1954 Print
    1904 Carnegie
    1954 Print · USGS
    Covers Allegheny County, including Pittsburgh, Bethel Park, and other nearby areas
  11. 1904 Map of Burgettstown, 1958 Print
    1904 Map of Burgettstown, 1958 Print
    1904 Burgettstown
    1958 Print · USGS
    Covers Allegheny County, including Cecil Township, Independence Township, and other nearby areas
  13. 1904 Map of Greensburg, 1963 Print
    1904 Map of Greensburg, 1963 Print
    1904 Greensburg
    1963 Print · USGS
    Covers Allegheny County, including Monroeville, Greensburg, and other nearby areas
  15. 1906 Map of Brownsville
    1906 Map of Brownsville
    1906 Brownsville
    1906 Print · USGS
    Covers Allegheny County, including Monessen, California, and other nearby areas
  17. 1906 Map of Burgettstown
    1906 Map of Burgettstown
    1906 Burgettstown
    1906 Print · USGS
    Covers Allegheny County, including Cecil Township, Independence Township, and other nearby areas
  19. 1906 Map of Carnegie
    1906 Map of Carnegie
    1906 Carnegie
    1906 Print · USGS
    Covers Allegheny County, including Pittsburgh, Bethel Park, and other nearby areas
  21. 1906 Map of Greensburg
    1906 Map of Greensburg
    1906 Greensburg
    1906 Print · USGS
    Covers Allegheny County, including Monroeville, Greensburg, and other nearby areas
  23. 1906 Map of Sewickley, 1960 Print
    1906 Map of Sewickley, 1960 Print
    1906 Sewickley
    1960 Print · USGS
    Covers Allegheny County, including Pittsburgh, Ross Township, and other nearby areas
  25. 1907 Map of Pittsburg
    1907 Map of Pittsburg
    1907 Pittsburg
    1907 Print · USGS
    Covers Allegheny County, including Pittsburgh, Penn Hills, and other nearby areas
  27. 1907 Map of Freeport, 1956 Print
    1907 Map of Freeport, 1956 Print
    1907 Freeport
    1956 Print · USGS
    Covers Allegheny County, including Plum, New Kensington, and other nearby areas
  29. 1908 Map of Sewickley
    1908 Map of Sewickley
    1908 Sewickley
    1908 Print · USGS
    Covers Allegheny County, including Pittsburgh, Ross Township, and other nearby areas
  31. 1908 Map of Carnegie, 1910 Print
    1908 Map of Carnegie, 1910 Print
    1908 Carnegie
    1910 Print · USGS
    Covers Allegheny County, including Pittsburgh, Bethel Park, and other nearby areas
  33. 1908 Map of New Kensington, 1956 Print
    1908 Map of New Kensington, 1956 Print
    1908 New Kensington
    1956 Print · USGS
    Covers Allegheny County, including Penn Hills, Ross Township, and other nearby areas
  35. 1909 Map of Freeport
    1909 Map of Freeport
    1909 Freeport
    1909 Print · USGS
    Covers Allegheny County, including Plum, New Kensington, and other nearby areas
  37. 1910 Map of New Kensington
    1910 Map of New Kensington
    1910 New Kensington
    1910 Print · USGS
    Covers Allegheny County, including Penn Hills, Ross Township, and other nearby areas
  39. 1931 Map of Brownsville, 1954 Print
    1931 Map of Brownsville, 1954 Print
    1931 Brownsville
    1954 Print · USGS
    Covers Allegheny County, including Monessen, California, and other nearby areas
  41. 1933 Map of Brownsville
    1933 Map of Brownsville
    1933 Brownsville
    1933 Print · USGS
    Covers Allegheny County, including Monessen, California, and other nearby areas
  43. 1940 Map of Brownsville
    1940 Map of Brownsville
    1940 Brownsville
    1940 Print · USGS
    Covers Allegheny County, including Monessen, California, and other nearby areas
  45. 1948 Map of Pittsburgh West, 1954 Print
    1948 Map of Pittsburgh West, 1954 Print
    1948 Pittsburgh West
    1954 Print · USGS
    Covers Allegheny County, including Pittsburgh, Ross Township, and other nearby areas
  47. 1950 Map of Valencia, 1952 Print
    1950 Map of Valencia, 1952 Print
    1950 Valencia
    1952 Print · USGS
    Covers Allegheny County, including Clinton Township, Bairdford, and other nearby areas
  49. 1951 Map of Pittsburgh West
    1951 Map of Pittsburgh West
    1951 Pittsburgh West
    1951 Print · USGS
    Covers Allegheny County, including Pittsburgh, Ross Township, and other nearby areas
Showing maps 1-25 of 91

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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?