Join Free

1940s Maps of Saint Clair County, Illinois

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

Saint Clair County, IL maps

(9)
  1. 1940 Map of Granite City
    1940 Map of Granite City
    1940 Granite City
    1940 Print · USGS
    The industrial heart of the bi-state region comes alive in this 1940s survey of the riverfront between Illinois and Missouri. Researchers can trace the massive rail yards and river docks supporting Granite City, alongside historic landmarks like Union Station, St Louis University, and the Bellefontaine Cemetery.
    4 unique versions available
  4. 1940 Map of Cahokia
    1940 Map of Cahokia
    1940 Cahokia
    1940 Print · USGS
    The industrial riverfront south of St Louis thrived in the early twentieth century as a massive rail and shipping hub. Trace the development of Cahokia and Dupo or locate landmarks like the U S Marine Hospital and the Lark Cem.
    3 unique versions available
  7. 1940 Map of Okawville, 1958 Print
    1940 Map of Okawville, 1958 Print
    1940 Okawville
    1958 Print · USGS
    Southwestern Illinois at the start of the 1940s remains a landscape of tight-knit farming hamlets and river-bottom wetlands. Researchers can trace the heritage of German settlements and rail stops from St Libory and Darmstadt to the mineral springs area of Okawville.
  10. 1941 Map of Jefferson Barracks
    1941 Map of Jefferson Barracks
    1941 Jefferson Barracks
    1941 Print · USGS
    The suburbs south of St. Louis were maturing into a dense network of rail-side towns and institutions just before the mid-century. Genealogists and historians can trace family roots through numerous sites like Grants Farm, National Cemetery, and Webster College.
    3 unique versions available
  13. 1942 Map of Baldwin, 1960 Print
    1942 Map of Baldwin, 1960 Print
    1942 Baldwin
    1960 Print · USGS
    Mid-century southwestern Illinois reveals a landscape of river-bend settlements and extensive rail networks. Genealogists can locate many local landmarks like Jordan Grove School, the Mobile and Ohio rail line, and the village of Evansville along the Kaskaskia River.
  16. 1949 Map of Saint Louis
    1949 Map of Saint Louis
    1949 Saint Louis
    1949 Print · USGS
    Greater St. Louis and its surrounding river valleys are captured here just after the war, showing the metropolitan core and the rural Ozark fringe. Researchers can trace the sprawling rail network of the Wabash RR or locate landmarks like Meramec Caverns Airport and Scott Air Force Base.
    2 unique versions available
  19. 1949 Map of Lebanon
    1949 Map of Lebanon
    1949 Lebanon
    1949 Print · USGS
    St. Clair County in the late 1940s is captured here at the intersection of rural heritage and military expansion. Genealogists and researchers can trace family-named sites like Espenschied Chapel, Rentchler Sch, and McKendree College.
    2 unique versions available
  22. 1949 Map of St. Jacob
    1949 Map of St. Jacob
    1949 St. Jacob
    1949 Print · USGS
    Madison County's agricultural and rail corridor is meticulously detailed in the late 1940s, centered on the village of St Jacob. Researchers can trace dozens of family cemeteries and rural school sites like Gilead Sch, Terrapin Ridge, and the PENNSYLVANIA railroad line.
    2 unique versions available
  25. 1949 Map of Cahokia, 1954 Print
    1949 Map of Cahokia, 1954 Print
    1949 Cahokia
    1954 Print · USGS
    Mid-century development and heavy industry define this riverfront region as St. Louis expands toward the Illinois rail yards. Researchers can trace the heritage of Dupo and Cahokia, locate St Josephs Cem, or find industrial landmarks like Monsanto.
    2 unique versions available
End of results
Showing maps 1-9 of 9

Top cities of Saint Clair County

See more

Frequently asked questions

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