1900s (20th Century) Maps of Port San Luis, California
Explore 11 historic maps of Port San Luis 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 Port San Luis'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 Port San Luis's history through authentic maps from the 1900s. This is your window into the past.
Port San Luis, CA maps
(11)- 1900 Map of San Luis1900 San Luis1900 Print · USGSCoastal California at the turn of the century shows a landscape where rail lines like the Pacific Coast Ry met the sea. Trace early industrial sites like the Asphalt Mines or follow the coast from Morro Rock to the pier at Port Harford.4 unique versions available
- 1941 Map of Port San Luis1941 Port San Luis1941 Print · USGSCoastal San Luis Obispo County is captured here just before the Second World War, showing the steep interface of the Diablo Range and the sea. Researchers can trace the maritime landscape around Port San Luis and identify distinctive coastal landmarks like Pecho Rock and Saddle Pk.
- 1945 Map of Port San Luis1945 Port San Luis1945 Print · USGSThe Central California coast appears here during the mid-forties, showing the vital maritime and rail connections at Port San Luis. Researchers can trace the path of the P C Ry as it meets the shore near San Luis Hill and the mouth of San Luis Creek.
- 1947 Map of San Luis Obispo, 1948 Print1947 San Luis Obispo1948 Print · USGSCoastal California at the dawn of the Cold War reveals a landscape of massive military reservations and quiet seaside towns. Genealogists and researchers can trace the Southern Pacific rail line, old mining sites like Los Burros Mine, and local landmarks from Point Buchon to the Carrizo Plain.
- 1948 Map of San Luis Obispo1948 San Luis Obispo1948 Print · USGSCentral Coast life in the late 1940s is centered on the Southern Pacific rail line and expanding military bases. Genealogists can trace early rural life through Union School and local operations like the Klau Mine or Buena Vista Mine.
- 1951 Map of Port San Luis, 1953 Print1951 Port San Luis1953 Print · USGSThe Central Coast of California appears here in the early fifties, before modern industrial development reshaped its canyons. Researchers can trace historical landmarks like the Point San Luis Lighthouse, the landing at Port San Luis, and the drainage of Diablo Canyon.3 unique versions available
- 1956 Map of San Luis Obispo, 1963 Print1956 San Luis Obispo1963 Print · USGSCentral California coastal and valley life unfolds in the mid-fifties, from the shoreline of Pismo Beach to the arid Carrizo Plain. Trace early travel routes along the Southern Pacific RR or locate family sites near the Templeton Cemetery and Paso Robles County Cemetery.5 unique versions available
- 1957 Map of San Luis Obispo1957 San Luis Obispo1957 Print · USGSCoastal California in the late fifties is defined by the steep Santa Lucia Range and the rail-connected hub of San Luis Obispo. Genealogists and researchers can trace rural life via Union School, the Southern Pacific line, and old sites like the Polar Star Mine.
- 1958 Map of San Luis Obispo1958 San Luis Obispo1958 Print · USGSThe Central Coast in the late fifties reveals a landscape of ranching and early tourism before the massive expansion of the modern era. Trace the path of the Southern Pacific through Atascadero or locate family roots in coastal towns like Cayucos and Cambria.
- 1965 Map of Port San Luis, 1966 Print1965 Port San Luis1966 Print · USGSThe Central Coast of California comes alive in the mid-sixties, showing the rugged interface of the Irish Hills and the Pacific Ocean. Maritime historians and genealogists can trace coastal infrastructure from the Lighthouse at Point San Luis to the northern reaches of Spooner.3 unique versions available
- 1981 Map of San Luis Obispo1981 San Luis Obispo1981 Print · USGSThe Central Coast comes alive in the early eighties as the Southern Pacific railroad connects growing coastal towns and rugged inland ranges. Researchers can trace land grants like Santa Manuela, locate Cem sites, and explore the footprint of California Polytechnic State University.3 unique versions available
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