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1900s (20th Century) Maps of Marin County, California

Explore 77 historic maps of Marin County 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 Marin County'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 Marin County's history through authentic maps from the 1900s. This is your window into the past.

Marin County, CA maps

(77)
  1. 1902 Map of Napa
    1902 Map of Napa
    1902 Napa
    1902 Print · USGS
    The Napa Valley and Carquinez Strait are captured at the turn of the century, showing a landscape defined by maritime military posts and early vineyards. Genealogists and historians can trace the Mare Island Navy Yard, the Insane Asylum, and rail stops at Zinfandel and Rutherford.
    6 unique versions available
  4. 1914 Map of Petaluma
    1914 Map of Petaluma
    1914 Petaluma
    1914 Print · USGS
    The North Bay region near the turn of the century shows a landscape of tidal marshes and rising ridges connected by the Northwestern Pacific. Genealogists and historians can trace old family ranch sites like Freitas Ranch and numerous rural schoolhouses including Iowa School and Burdell School.
    5 unique versions available
  7. 1915 Map of San Francisco
    1915 Map of San Francisco
    1915 San Francisco
    1915 Print · USGS
    San Francisco and the East Bay appear at a pivotal moment just before the First World War, featuring the grand layout of the Panama-Pacific International Exposition. Genealogists and historians can trace the early rail networks of the Key Route Pier, the industrial waterfront at Winehaven, and historic landmarks like Cliff House.
    6 unique versions available
  10. 1916 Map of Mare Island
    1916 Map of Mare Island
    1916 Mare Island
    1916 Print · USGS
    The northern San Pablo Bay region comes alive in this survey, showcasing a landscape of tidal marshes and rail-driven growth during the mid-1910s. Researchers can trace the layout of the Mare Island Navy Yard, the remote rail stop at Wingo, and the rural classrooms of Fly School.
    4 unique versions available
  13. 1916 Map of Point Reyes
    1916 Map of Point Reyes
    1916 Point Reyes
    1916 Print · USGS
    Coastal Marin County during the mid-1910s reveals a working landscape of shorefront landings and family ranches. Researchers can trace early settlements and schools like Lairds Landing, Olema, and Franklin School before modern park designations.
    2 unique versions available
  16. 1918 Map of Point Reyes
    1918 Map of Point Reyes
    1918 Point Reyes
    1918 Print · USGS
    Marin County's rugged coast appears here in the years following the turn of the century, showing a working landscape of ranches and rail. Genealogists can locate family landmarks like Lairds Landing, rural schoolhouses, and the Northwestern Pacific line.
    6 unique versions available
  19. 1935 Map of Sebastopol
    1935 Map of Sebastopol
    1935 Sebastopol
    1935 Print · USGS
    The Sonoma County hills and the Gold Ridge fruit district are captured here in the mid-1930s, just as the regional rail network still connected small agricultural hamlets. Genealogists can trace family footprints at Watson Sch, Two Rock Ch, and the rural community of Bloomfield.
  22. 1941 Map of Tamalpais
    1941 Map of Tamalpais
    1941 Tamalpais
    1941 Print · USGS
    Marin County's coastal defenses and rail-connected towns are captured here just as the nation entered World War II. Researchers can trace the early fortifications at Fort Cronkhite, the path of the Northwestern Pacific RR, and old landmarks like Bolinas School.
  25. 1942 Map of Mare Island
    1942 Map of Mare Island
    1942 Mare Island
    1942 Print · USGS
    The northern reaches of San Pablo Bay come alive in this wartime survey, showing a landscape of vital naval yards and marshland agriculture. Genealogists and historians can trace rail depots like Napa Junction, rural landmarks like American Canyon School, and the industrial waterfronts of Vallejo and Oleum.
  28. 1942 Map of Sebastopol
    1942 Map of Sebastopol
    1942 Sebastopol
    1942 Print · USGS
    Western Sonoma County comes into focus in the early 1940s, showing a landscape defined by apple orchards and redwood groves. Genealogists can trace family footprints through rural sites like Gold Ridge Sch, the Northwestern Pacific RR line, and Bohemian Grove.
    3 unique versions available
  31. 1942 Map of Petaluma
    1942 Map of Petaluma
    1942 Petaluma
    1942 Print · USGS
    The Marin and Sonoma county line runs through this early 1940s landscape of tidal marshes and ranch lands. Genealogists can trace family names at Mt Oliver Cemetery or find historic rural institutions like the Olompali School and St Vincent Station.
  34. 1942 Map of Bodega Head, 1956 Print
    1942 Map of Bodega Head, 1956 Print
    1942 Bodega Head
    1956 Print · USGS
    The Sonoma coast during the early 1940s reveals a landscape of sheltered harbors and high coastal ridges. Genealogists and historians can trace the foundations of Bodega Bay, locate the Ocean View Sch, and explore landmarks from Arched Rock Beach to Swallow City.
    3 unique versions available
  37. 1944 Map of Bodega Head
    1944 Map of Bodega Head
    1944 Bodega Head
    1944 Print · USGS
    The Sonoma coast at the height of the Second World War shows a landscape of quiet harbors and remote coastal gulches. Researchers can trace the layout of Bodega Bay, locate the Ocean View Sch, and explore the terrain around Mount Roscoe and Swallow City.
    3 unique versions available
  40. 1947 Map of Santa Rosa
    1947 Map of Santa Rosa
    1947 Santa Rosa
    1947 Print · USGS
    Northern California in the late 1940s was a landscape of agricultural valleys and vital rail hubs. Trace the historic routes of the Northwestern Pacific through Healdsburg or explore the mid-century waterfronts of Vallejo and Benicia near Mare Island.
  43. 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.
  46. 1947 Map of San Francisco North, 1955 Print
    1947 Map of San Francisco North, 1955 Print
    1947 San Francisco North
    1955 Print · USGS
    San Francisco and the Marin coastline are captured here in the years following World War II, just as the city's modern skyline began to take shape. Researchers can trace historic landmarks like Mission Dolores, early waterfront infrastructure at Mission Rock, and the military outposts of Fort Baker Military Reservation.
  49. 1947 Map of San Quentin, 1956 Print
    1947 Map of San Quentin, 1956 Print
    1947 San Quentin
    1956 Print · USGS
    The San Francisco Bay area in the late 1940s reveals a landscape of ferry-connected shores and burgeoning industry. Trace the historic Richmond-San Rafael Ferry route, the State Penitentiary, and the Tiburon Naval Net Depot.
  52. 1948 Map of San Quentin
    1948 Map of San Quentin
    1948 San Quentin
    1948 Print · USGS
    The North Bay waterfront comes alive in the late 1940s, showing the active ferry routes and military installations of the era. Genealogists and historians can trace the Richmond-San Rafael Ferry, the State Penitentiary, and the Tiburon Naval Net Depot.
    2 unique versions available
  55. 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.
  58. 1949 Map of Santa Rosa
    1949 Map of Santa Rosa
    1949 Santa Rosa
    1949 Print · USGS
    The North Bay and Wine Country appear here in the late 1940s, when the Northwestern Pacific RR still dominated regional transit. Genealogists and historians can trace old coastal outposts like Anchor Bay Settlement and the early layout of Santa Rosa.
    2 unique versions available
  61. 1949 Map of Mare Island, 1957 Print
    1949 Map of Mare Island, 1957 Print
    1949 Mare Island
    1957 Print · USGS
    The Carquinez Strait and San Pablo Bay waterfronts are captured here during the post-war industrial peak. Researchers can trace historic shorelines and rail lines through Vallejo, the Mare Island Naval Reservation, and early industry at Oleum and Hercules.
  64. 1950 Map of San Francisco North
    1950 Map of San Francisco North
    1950 San Francisco North
    1950 Print · USGS
    Mid-century San Francisco and the Marin headlands are captured here during a period of peak maritime and military activity. Local historians can trace the street-level detail of Chinatown, find the old Townsend St Station, or locate neighborhood schools like Lowell HS.
  67. 1950 Map of Mt. Tamalpais, 1954 Print
    1950 Map of Mt. Tamalpais, 1954 Print
    1950 Mt. Tamalpais
    1954 Print · USGS
    Marin County's dramatic coastline and the approach to the Golden Gate are shown here in the mid-fifties. Genealogists and historians can trace the early boundaries of Mill Valley, the coastal outposts of Bolinas and Stinson Beach, and several coastal military sites.
    4 unique versions available
  70. 1951 Map of Petaluma Point
    1951 Map of Petaluma Point
    1951 Petaluma Point
    1951 Print · USGS
    San Pablo Bay and the Marin shoreline are captured here in the early fifties, detailing the transition from tidal marsh to inland hills. Trace the path of the Northwestern Pacific railroad past Rose or explore the historic site at China Camp.
    2 unique versions available
  73. 1951 Map of Mare Island
    1951 Map of Mare Island
    1951 Mare Island
    1951 Print · USGS
    The industrial and naval might of the East Bay is on full display in the early fifties, centering on the massive Mare Island Naval Reservation. Trace the growth of Vallejo and the waterfront towns of Rodeo and Hercules along the Southern Pacific rail line.
Showing maps 1-25 of 77

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Frequently asked questions

  • What are the different types of historical maps available for Marin County?
  • What is the oldest map of Marin County?
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  • Are there historical topographic maps available for Marin County?
  • Is there historical aerial imagery available for Marin County?
  • Where are historical maps of Marin County sourced from?