1940s Maps of Tri Counties, California
Explore 5 historic maps of Tri Counties 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 Tri Counties'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 Tri Counties's history through authentic maps from the 1940s. This is your window into the past.
Tri Counties, CA maps
(5)- 1942 Map of Adelaida
1942 Adelaida1942 Print · USGSCovers Tri Counties, including Running Deer Ranch, Lake Nacimiento, and other nearby areas - 1947 Map of San Luis Obispo, 1948 Print
1947 San Luis Obispo1948 Print · USGSCovers Tri Counties, including San Luis Obispo, Atascadero, and other nearby areas - 1947 Map of Adelaida, 1957 Print
1947 Adelaida1957 Print · USGSCovers Tri Counties, including Running Deer Ranch, Lake Nacimiento, and other nearby areas2 unique versions available - 1948 Map of San Luis Obispo
1948 San Luis Obispo1948 Print · USGSCovers Tri Counties, including San Luis Obispo, Atascadero, and other nearby areas - 1948 Map of Lime Mountain, 1952 Print
1948 Lime Mountain1952 Print · USGSCovers Tri Counties, including Running Deer Ranch, Lake Nacimiento, and other nearby areas4 unique versions available
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Frequently asked questions
- What are the different types of historical maps available for Tri Counties?
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- Are there historical topographic maps available for Tri Counties?
- Is there historical aerial imagery available for Tri Counties?
- Where are historical maps of Tri Counties sourced from?