1920s Maps of San Luis Obispo County, California

Explore 4 historic maps of San Luis Obispo County from the 1920s. These maps offer a rare glimpse into what life looked like during the 1920s — 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 San Luis Obispo County's landscape evolved across the 1920s, 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 1920s, 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 San Luis Obispo County's history through authentic maps from the 1920s. This is your window into the past.


San Luis Obispo County, CA maps

(4)
  1. 1921 Map of Cape San Martin
    1921 Map of Cape San Martin
    1921 Cape San Martin
    1921 Print · USGS
    Covers San Luis Obispo County, including Gorda, Plaskett, and other nearby areas
    6 unique versions available

  2. 1922 Map of Pozo
    1922 Map of Pozo
    1922 Pozo
    1922 Print · USGS
    Covers San Luis Obispo County, including Pozo, Pippin Corner, and other nearby areas
    3 unique versions available

  3. 1922 Map of Nipomo
    1922 Map of Nipomo
    1922 Nipomo
    1922 Print · USGS
    Covers San Luis Obispo County, including Huasna, Suey Creek, and other nearby areas
    4 unique versions available

  4. 1927 Map of Piedras Blancas
    1927 Map of Piedras Blancas
    1927 Piedras Blancas
    1927 Print · USGS
    Covers San Luis Obispo County, including United States, California, and other nearby areas
    2 unique versions available

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Frequently asked questions

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