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1940s Maps of San Mateo County, California

Explore 22 historic maps of San Mateo 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 San Mateo 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 San Mateo County's history through authentic maps from the 1940s. This is your window into the past.

San Mateo County, CA maps

(22)
  1. 1940 Map of Halfmoon Bay
    1940 Map of Halfmoon Bay
    1940 Halfmoon Bay
    1940 Print · USGS
    The San Mateo coast and Santa Cruz Mountains appear here in the early 1940s, balancing rural ranching with early oil exploration. Genealogists and local historians can trace family-named sites like Bowman Ranch and old rural hubs including Pescadero and La Honda.
    2 unique versions available
  4. 1940 Map of Ano Nuevo, 1943 Print
    1940 Map of Ano Nuevo, 1943 Print
    1940 Ano Nuevo
    1943 Print · USGS
    The San Mateo and Santa Cruz coastlines appear here in the early 1940s, highlighting a period of rural ranching and isolated coastal outposts. Genealogists and historians can trace the locations of Coastways Ranch, the Whitehouse Camp, and Trantor.
  7. 1941 Map of Ano Nuevo Pt.
    1941 Map of Ano Nuevo Pt.
    1941 Ano Nuevo Pt.
    1941 Print · USGS
    The rugged San Mateo coastline comes alive in the early 1940s, showing a landscape of maritime navigation and coastal ranching. Genealogy and history buffs can locate early landmarks like Pigeon Point LH, Notley Junction, and the historic Coastways Ranch.
  10. 1941 Map of Palo Alto
    1941 Map of Palo Alto
    1941 Palo Alto
    1941 Print · USGS
    The Peninsula and Santa Clara Valley are seen here in the early 1940s, just as the region began its mid-century transformation. Researchers can trace the layout of Stanford University, the military grounds of Moffett Field, and local landmarks like Flood Park.
  13. 1942 Map of Ano Nuevo
    1942 Map of Ano Nuevo
    1942 Ano Nuevo
    1942 Print · USGS
    The Central Coast south of Pescadero appears in this wartime survey, showing a landscape of remote ranching and prominent maritime landmarks. Researchers can trace early 20th-century coastal sites like Coastways Ranch, Notley Junction, and the iconic Pigeon Point light station.
    2 unique versions available
  16. 1942 Map of Hayward
    1942 Map of Hayward
    1942 Hayward
    1942 Print · USGS
    The East Bay shoreline and inland foothills come alive in the early 1940s as industry and infrastructure reshape the landscape. Researchers can trace the original footprints of Russell City and Mt Eden or locate the historic Oakland Speedway and Fairmont Hospital.
  19. 1943 Map of Palo Alto
    1943 Map of Palo Alto
    1943 Palo Alto
    1943 Print · USGS
    The San Francisco Peninsula was still a region of orchards and academic outposts in the years following the Great Depression. Researchers can trace the development of early Silicon Valley through the Southern Pacific line and family landmarks like Duveneck Ranch and the Whisman Dist School.
  22. 1943 Map of San Mateo
    1943 Map of San Mateo
    1943 San Mateo
    1943 Print · USGS
    The San Francisco Peninsula during the mid-war years shows a region of expanding shoreline industry and established hillside communities. Researchers can trace historic landmarks like St Josephs Military Academy and the Golden Gate National Cem.
  25. 1943 Map of Halfmoon Bay
    1943 Map of Halfmoon Bay
    1943 Halfmoon Bay
    1943 Print · USGS
    San Mateo County's coastline and mountain ridges appear here during the mid-war years, showcasing a landscape of rural schoolhouses and coastal hamlets. Trace family roots and local landmarks from the Pulgas Water Temple to old sites like Pescadero and Purisima Sch.
  28. 1947 Map of San Francisco, 1948 Print
    1947 Map of San Francisco, 1948 Print
    1947 San Francisco
    1948 Print · USGS
    The Bay Area in the late 1940s reveals a region transitioning from wartime intensity to post-war suburban growth. Trace the historic rail lines of the Southern Pacific RR or locate early military footprints at Fort Funston and Moffett Field.
  31. 1947 Map of San Francisco South, 1955 Print
    1947 Map of San Francisco South, 1955 Print
    1947 San Francisco South
    1955 Print · USGS
    Post-war San Mateo County and the city's southern edge are caught here during a period of rapid peninsula growth. Genealogists can trace the many memorial grounds of Colma, while historians can locate the Tanforan Race Track and early San Francisco International Airport.
  34. 1947 Map of San Leandro, 1956 Print
    1947 Map of San Leandro, 1956 Print
    1947 San Leandro
    1956 Print · USGS
    The East Bay shoreline in the late 1940s shows a fascinating mix of industrial salt production and rapid suburban development. Researchers can trace early aviation at the Oakland Municipal Airport or locate community anchors like San Lorenzo Village and the Oakland Speedway.
  37. 1947 Map of San Mateo, 1957 Print
    1947 Map of San Mateo, 1957 Print
    1947 San Mateo
    1957 Print · USGS
    Mid-century San Mateo County shows a landscape of growing suburbs and salt marshes before the era of massive bay fill. Genealogists and historians can locate the San Mateo Junior College, trace the Southern Pacific line, or find the California Military Academy in Belmont.
  40. 1947 Map of Newark, 1958 Print
    1947 Map of Newark, 1958 Print
    1947 Newark
    1958 Print · USGS
    The industrial shoreline and agricultural plains of the East Bay are captured here just after the war. Local historians can trace early landings like Jarvis Landing and family landmarks such as Patterson Ranch and the Masonic Home.
  43. 1948 Map of San Leandro
    1948 Map of San Leandro
    1948 San Leandro
    1948 Print · USGS
    Post-war East Bay growth is on full display in this late 1940s survey of the shoreline. Genealogists and historians can trace the emergence of San Lorenzo Village or locate local landmarks like the Oakland Speedway, Powder Works, and the Naval Chapel.
  46. 1948 Map of Redwood Point
    1948 Map of Redwood Point
    1948 Redwood Point
    1948 Print · USGS
    The San Mateo County shoreline in the late 1940s was a landscape of tidal marshes and industrial salt production. Trace the early layout of City Harbor and San Carlos Airport alongside landmarks like Oradio Sta KNBC.
  49. 1948 Map of Newark
    1948 Map of Newark
    1948 Newark
    1948 Print · USGS
    Coastal Alameda County is captured here in the late 1940s, showing a landscape defined by salt refineries and historic ranching tracts. Researchers can trace the industrial roots of Alvarado and Newark or locate family-history sites like the Masonic Home and Cypress Cem.
  52. 1948 Map of San Francisco, 1951 Print
    1948 Map of San Francisco, 1951 Print
    1948 San Francisco
    1951 Print · USGS
    The Bay Area in the late 1940s reveals a landscape defined by rapid post-war growth and a heavy military presence at the Golden Gate. Trace the development of early trans-bay infrastructure like the Oakland-Bay Bridge and historic coastal defense sites such as Fort Funston and Alcatraz Island.
  55. 1948 Map of Palo Alto, 1956 Print
    1948 Map of Palo Alto, 1956 Print
    1948 Palo Alto
    1956 Print · USGS
    The San Francisco Peninsula is captured here during its postwar transformation into a suburban and technological hub. Genealogists and local historians can trace early neighborhood boundaries near Stanford University, the sprawling Moffet Naval Air Station, and family landmarks like O'Neal Ranch.
  58. 1948 Map of Ano Nuevo, 1961 Print
    1948 Map of Ano Nuevo, 1961 Print
    1948 Ano Nuevo
    1961 Print · USGS
    The San Mateo and Santa Cruz coast is documented here in the decade following the Great Depression. Trace early coastal land use through landmarks like Whitehouse Camp (Abandoned), the Chalks Lookout, and Coastways Ranch.
    2 unique versions available
  61. 1949 Map of Montara Mountain
    1949 Map of Montara Mountain
    1949 Montara Mountain
    1949 Print · USGS
    The San Mateo coastline and the San Andreas Rift Zone meet in the late 1940s, showing a mix of growing bayside cities and isolated Pacific shore hamlets. Researchers can trace the early layout of San Francisco International Airport and locate historic sites like the Sanchez Adobe or the Lighthouse at Montara Pt.
    3 unique versions available
  64. 1949 Map of San Mateo
    1949 Map of San Mateo
    1949 San Mateo
    1949 Print · USGS
    The mid-century San Mateo Peninsula is captured here as a bustling landscape of suburban growth and institutional development. Researchers can trace the legacy of local landmarks like the Bay Meadows Race Track, St Johns Cem, and the historic College of Notre Dame.
End of results
Showing maps 1-22 of 22

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