1940s Maps of Alta Loma, Rancho Cucamonga

Explore 3 historic maps of Alta Loma 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 Alta Loma'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 Alta Loma's history through authentic maps from the 1940s. This is your window into the past.


Alta Loma, Rancho Cucamonga maps

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  1. 1940 Map of Evey Canyon
    1940 Map of Evey Canyon
    1940 Evey Canyon
    1940 Print · USGS
    The foothills of the San Gabriel Mts meet the growing community of Claremont in this 1940s-era survey. Genealogists and local historians can trace the early road network of the valley and find mountain landmarks like the Norton Sch and Lower San Antonio Guard Station.
    3 unique versions available

  2. 1942 Map of Ontario and Vicinity
    1942 Map of Ontario and Vicinity
    1942 Ontario and Vicinity
    1942 Print · USGS
    The Inland Empire is shown at a pivotal moment in the early 1940s, when orange groves and vineyards still dominated the landscape between the mountains and the valley floor. Researchers can trace the rail corridors of the SOUTHERN PACIFIC and the Pacific Electric while locating old neighborhood markers like Narod, Sunsweet, and the Sierra Vista Sch.
    2 unique versions available

  3. 1944 Map of Cucamonga
    1944 Map of Cucamonga
    1944 Cucamonga
    1944 Print · USGS
    The San Gabriel Valley and Inland Empire are shown here during the mid-forties, capturing the peak of the region's citrus era and rail-based transit. Researchers can trace early campus layouts at Pomona College or locate vanished landmarks like the Monta Vista Resort and Padua Hills Theater.

End of results
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Frequently asked questions

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