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1900s (20th Century) Maps of Derry Township, Pennsylvania

Explore 20 historic maps of Derry Township from the 1900s (20th Century). These maps offer a rare glimpse into what life looked like during the 1900s — 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 Derry Township's landscape evolved across the 1900s, 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 1900s, 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 Derry Township's history through authentic maps from the 1900s. This is your window into the past.

Derry Township, PA maps

(20)
  1. 1900 Map of Latrobe, 1958 Print
    1900 Map of Latrobe, 1958 Print
    1900 Latrobe
    1958 Print · USGS
    The industrial heart of Westmoreland County is shown at a pivotal moment when the coal and coke industry was reshaping the land. Genealogists and historians can trace the early layouts of Latrobe, Derry, and Blairsville alongside company towns like Whitney and Baggaley.
  4. 1902 Map of Latrobe
    1902 Map of Latrobe
    1902 Latrobe
    1902 Print · USGS
    Westmoreland County at the opening of the twentieth century was a powerhouse of the American coal and coke industry. Genealogists and industrial historians can trace the early rail networks of the Main Line and locate landmark sites like the St Vincent Monastery and various Coke Ovens.
  7. 1903 Map of Latrobe, 1905 Print
    1903 Map of Latrobe, 1905 Print
    1903 Latrobe
    1905 Print · USGS
    Westmoreland County at the turn of the century reveals a landscape defined by the arrival of heavy industry and the winding Conemaugh River. Genealogists can locate family landmarks from the Coke Ovens at Crabtree to the grounds of St. Vincent.
    6 unique versions available
  10. 1920 Map of New Florence, 1958 Print
    1920 Map of New Florence, 1958 Print
    1920 New Florence
    1958 Print · USGS
    The Conemaugh River valley at the dawn of the 1920s shows a landscape defined by the PENNSYLVANIA RR and industrial coal towns. Genealogists can locate family homesteads near dozens of named country schools like Wallace School or trace the old Lincoln Highway through Armagh.
  13. 1921 Map of New Florence
    1921 Map of New Florence
    1921 New Florence
    1921 Print · USGS
    Westmoreland and Indiana counties are captured in the early 1920s as industrial rail corridors and the Lincoln Highway begin to modernize the rural landscape. Genealogists can locate family landmarks like Campbell's Mill, the Centerville Huff PO, and several country schools including Robbs School.
  16. 1922 Map of New Florence
    1922 Map of New Florence
    1922 New Florence
    1922 Print · USGS
    Western Pennsylvania in the early 1920s shows a landscape of river-carved ridges and busy rail corridors connecting coal and quarry towns. Genealogists can trace family footprints across dozens of rural schools and stations like Lockport Station, Centerville (Huff PO), and Grafton.
    5 unique versions available
  19. 1944 Map of New Florence
    1944 Map of New Florence
    1944 New Florence
    1944 Print · USGS
    Westmoreland and Indiana counties during the wartime years reveal a landscape shaped by coal, steam, and rail. Genealogists can trace family footprints in vanished settlements and school districts like Robindale Smokeless PO, Scottglen Sta, and Mahan Sch.
  22. 1953 Map of Pittsburgh
    1953 Map of Pittsburgh
    1953 Pittsburgh
    1953 Print · USGS
    Western Pennsylvania's industrial landscape at the start of the fifties shows the steel and rail corridors between Pittsburgh and Altoona. Trace family roots in river towns like Tarentum or follow the Pennsylvania Turnpike across Laurel Hill.
  25. 1954 Map of Pittsburgh
    1954 Map of Pittsburgh
    1954 Pittsburgh
    1954 Print · USGS
    Western Pennsylvania in the early fifties remains a powerhouse of heavy industry and vital transit corridors. Genealogists and historians can trace the rail-and-river network connecting Pittsburgh, Johnstown, and Altoona via the Pennsylvania RR and the Lincoln Highway.
    2 unique versions available
  28. 1958 Map of Pittsburgh
    1958 Map of Pittsburgh
    1958 Pittsburgh
    1958 Print · USGS
    Western Pennsylvania in the late fifties shows an industrial heartland defined by the confluence of the Allegheny River and Monongahela River. Researchers can trace the sprawling rail networks of the Pennsylvania RR and find established towns like Butler, Latrobe, and Windber.
    5 unique versions available
  31. 1959 Map of Pittsburgh
    1959 Map of Pittsburgh
    1959 Pittsburgh
    1959 Print · USGS
    Western Pennsylvania in the late fifties is captured here at the height of its industrial era. Genealogists and historians can trace the riverfront growth of Pittsburgh, the rail works at Altoona, and the mountain gaps of Laurel Hill.
  34. 1964 Map of Pittsburgh
    1964 Map of Pittsburgh
    1964 Pittsburgh
    1964 Print · USGS
    Western Pennsylvania in the late fifties and early sixties shows a landscape of powerful river industries and expanding highways. Genealogists and historians can trace the rail corridors of the Pennsylvania RR through industrial hubs like Johnstown, Altoona, and Nanty Glo.
  37. 1964 Map of Latrobe, 1965 Print
    1964 Map of Latrobe, 1965 Print
    1964 Latrobe
    1965 Print · USGS
    Latrobe and its surrounding coal-patch towns are captured here in the mid-1960s during a peak of industrial and institutional activity. Trace the rail lines and mine sites that built towns like Hostetter and Luxor, or locate family sites near St Vincent College.
    5 unique versions available
  40. 1964 Map of Bolivar, 1966 Print
    1964 Map of Bolivar, 1966 Print
    1964 Bolivar
    1966 Print · USGS
    The Conemaugh River valley in the early sixties shows a landscape defined by industrial extraction and rail transit. Genealogists can locate family names and sites near Black Lick, Josephine, and the Torrance State Hospital.
    6 unique versions available
  43. 1964 Map of Wilpen, 1966 Print
    1964 Map of Wilpen, 1966 Print
    1964 Wilpen
    1966 Print · USGS
    Westmoreland County in the mid-sixties reveals a landscape of industrial transitions and mountain ridges. Genealogists and historians can trace family roots at Green Mountain Cem or locate former landmarks like St Johns Ch and the old railroad grade.
    4 unique versions available
  46. 1964 Map of Saltsburg, 1966 Print
    1964 Map of Saltsburg, 1966 Print
    1964 Saltsburg
    1966 Print · USGS
    Indiana and Westmoreland Counties during the mid-sixties show a landscape of heavy industry and civil engineering at the junction of two great rivers. Trace the impact of the Loyalhanna Dam on the terrain near Saltsburg and find historic sites like Union Cem and Tunnelton.
    3 unique versions available
  49. 1964 Map of Derry, 1966 Print
    1964 Map of Derry, 1966 Print
    1964 Derry
    1966 Print · USGS
    Derry and Latrobe are shown in the mid-1960s during a period of heavy industrial activity and coal mining. Researchers can locate family landmarks such as St Martins Ch, Sacred Heart Sch, and numerous coal works including Coke Ovens and strip mines.
    4 unique versions available
  52. 1964 Map of Blairsville, 1966 Print
    1964 Map of Blairsville, 1966 Print
    1964 Blairsville
    1966 Print · USGS
    The Conemaugh River valley was a hub of transit and industry in the early sixties, where the steel rails of the Pennsylvania Railroad met the coal mines of Derry. Genealogists can trace family names at Livermore Cem or locate old community landmarks like Old Salem Ch and the Torrance State Hospital.
    5 unique versions available
  55. 1986 Map of Pittsburgh East
    1986 Map of Pittsburgh East
    1986 Pittsburgh East
    1986 Print · USGS
    Western Pennsylvania in the mid-eighties shows a landscape defined by industrial rivers and rising mountain ridges. Trace the dense rail networks of CONRAIL and the Pittsburgh and Lake Erie RR connecting historic centers like Monessen, Jeannette, and Connellsville.
    3 unique versions available
  58. 1998 Map of Derry, 2000 Print
    1998 Map of Derry, 2000 Print
    1998 Derry
    2000 Print · USGS
    Westmoreland County at the close of the nineties shows a landscape defined by the intersection of industrial mining and steep ridgelines. Genealogists and historians can trace local family roots through sites like Sacred Heart Sch, Keltz Cem, and the small community of Peanut.
End of results
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