Old Maps of Contra Costa County, California

Explore 242 old maps of Contra Costa County, spanning from 1895 to today. These high-resolution historic maps reveal how streets, neighborhoods, landmarks, and natural features evolved over time — perfect for genealogy, metal detecting, research, and local history exploration.

What you can do with these maps:

  • See how Contra Costa County changed over time: Compare historical maps to modern-day views to trace roads, homesites, rail lines & more.
  • View detailed metadata: Each map includes creators, publishers, year, scale, and archive source.
  • Overlay maps with satellite & LiDAR: Visualize the past alongside modern tools to explore terrain & human change.
  • Trusted historical sources: Maps sourced from the USGS, Library of Congress, and other archives.
  • Access maps your way: View online, download high-res files, or order prints for personal or research use.

Start exploring old maps of Contra Costa County to uncover forgotten places, hidden landmarks, and the deep history beneath your feet.


Contra Costa County, CA maps

(242)
  1. 1895 Map of San Francisco
    1895 Map of San Francisco
    1895 San Francisco
    1895 Print · USGS
    The San Francisco Bay Area thrives as a maritime and rail power at the close of the nineteenth century. Genealogists and researchers can trace early neighborhoods in Berkeley, the layout of the Presidio Military Reservation, and rail terminals like the Oakland Mole.

  2. 1896 Map of Carquinez Strait, 1954 Print
    1896 Map of Carquinez Strait, 1954 Print
    1896 Carquinez Strait
    1954 Print · USGS
    The industrial waterfront of the Carquinez Strait comes alive in the 1890s, where shipping channels meet the rails. Genealogists and historians can trace early bay settlements from the U.S. Arsenal at Benicia to the rail hubs of Vallejo and Martinez.

  3. 1896 Map of Mt. Diablo, 1964 Print
    1896 Map of Mt. Diablo, 1964 Print
    1896 Mt. Diablo
    1964 Print · USGS
    The northern slopes of the Diablo Range come alive in the 1890s, where mining settlements like Nortonville and Somersville thrived alongside the Empire R. R. and Star Mine. Trace early rail lines, family landmarks, and the rural roots of Danville and San Ramon.

  4. 1897 Map of Concord
    1897 Map of Concord
    1897 Concord
    1897 Print · USGS
    The East Bay hills and valleys appear here in the late nineteenth century, just as railroads began to reshape the old rancho lands. Researchers can trace the original tracks of the California and Nevada R. R. and early settlements like Pacheco and Lafayette.
    6 unique versions available

  5. 1898 Map of Karquines
    1898 Map of Karquines
    1898 Karquines
    1898 Print · USGS
    The Karquines Strait and Suisun Bay served as a bustling maritime and rail crossroads in the late nineteenth century. Researchers can trace the early layouts of Benicia, Vallejo, and Martinez, or locate vanished landmarks like Seal Bluff Landing and the U.S. Arsenal.

  6. 1898 Map of Mt. Diablo
    1898 Map of Mt. Diablo
    1898 Mt. Diablo
    1898 Print · USGS
    Contra Costa County at the end of the nineteenth century was a rugged landscape of coal mining camps and cattle valleys. Genealogists and local historians can trace the early footprints of Nortonville, Stewartville, and the remote Star Mine nestled among the peaks of Monte del Diablo.
    7 unique versions available

  7. 1899 Map of San Francisco
    1899 Map of San Francisco
    1899 San Francisco
    1899 Print · USGS
    The Bay Area at the close of the nineteenth century reveals a burgeoning metropolis still tied to its maritime and rail roots. Trace the early layouts of the University of California and the Presidio, or locate the now-vanished Lone Mt. Cem. and Shell Mound.
    7 unique versions available

  8. 1899 Map of Haywards
    1899 Map of Haywards
    1899 Haywards
    1899 Print · USGS
    The East Bay shoreline at the end of the century was a landscape of industrial salt works and vital maritime landings. Genealogists and historians can trace the early rail stops at Haywards Sta. or locate family trade hubs at Mulford Landing and Jarvis Landing.
    5 unique versions available

  9. 1901 Map of Karquines
    1901 Map of Karquines
    1901 Karquines
    1901 Print · USGS
    Northern California at the dawn of the twentieth century shows a landscape defined by the deep-water Karquines Strait and industrial rail hubs. Researchers can trace the waterfront activity of Benicia, Vallejo, and Martinez or the tidal marsh outposts at Drawbridge and Rush Landing.
    6 unique versions available

  10. 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

  11. 1906 Map of Pleasanton
    1906 Map of Pleasanton
    1906 Pleasanton
    1906 Print · USGS
    The Livermore and Amador Valleys are captured here at the turn of the century as they transitioned from ranch lands to thriving rail hubs. Genealogists and historians can trace family locations near Mission San Jose, the old Dougherty Post Office, and the junction at Niles.
    5 unique versions available

  12. 1907 Map of Antioch, 1955 Print
    1907 Map of Antioch, 1955 Print
    1907 Antioch
    1955 Print · USGS
    The Suisun Bay and Sacramento Delta regions are captured here in the early twentieth century during a period of agricultural and industrial expansion. Local historians can trace family-named river ports like Lingos Landing and rural landmarks such as Scandia School or the settlement of Birds Landing.

  13. 1908 Map of Antioch
    1908 Map of Antioch
    1908 Antioch
    1908 Print · USGS
    The convergence of the great California rivers in the early twentieth century shows a landscape of busy water landings and growing rail towns. Trace the industrial roots of Antioch or locate vanished landings like Palmetto Landing and Duttons Landing along the sloughs.
    5 unique versions available

  14. 1910 Map of Bouldin
    1910 Map of Bouldin
    1910 Bouldin
    1910 Print · USGS
    The Sacramento-San Joaquin Delta at the turn of the century is a labyrinth of reclaimed island tracts and sloughs. Trace the early river landings at Central Landing and Blakes Landing, or locate the Old Cannery along the South Fork Mokelumne River.
    3 unique versions available

  15. 1910 Map of Jersey
    1910 Map of Jersey
    1910 Jersey
    1910 Print · USGS
    The California Delta at the start of the century was a landscape of river-bound islands and vital steamboat landings. Genealogists and historians can trace old waterfront sites like Larsen Landing and Jersey, or the rail path of the A T and S F R R.
    3 unique versions available

  16. 1911 Map of Byron Hot Springs
    1911 Map of Byron Hot Springs
    1911 Byron Hot Springs
    1911 Print · USGS
    Contra Costa County at the beginning of the twentieth century shows a landscape transitioning from ranching to railroad-driven tourism. Historians can trace the footprint of the Byron Hot Springs resort and the early rail infrastructure serving Byron.

  17. 1913 Map of Woodward Island
    1913 Map of Woodward Island
    1913 Woodward Island
    1913 Print · USGS
    The reclaimed islands of the California Delta appear in this pre-war survey as a sophisticated network of levees and rail. Trace early commercial hubs like the Cannery at Woodward and the rural Middle River Moorland P O.

  18. 1914 Map of Brentwood
    1914 Map of Brentwood
    1914 Brentwood
    1914 Print · USGS
    Brentwood and the surrounding orchards thrived in the early twentieth century as a dual-railroad crossroads. Researchers can trace early rural life through the Iron House School, the Southern Pacific RR tracks, and the Oil Pumping Station.

  19. 1914 Map of Bethany
    1914 Map of Bethany
    1914 Bethany
    1914 Print · USGS
    The San Joaquin Delta was a maze of engineered waterways and rail lines just before the First World War. Researchers can trace the original routes of the Bethany Ferry and locate early landmarks like Mountain House and the Lammersville School.
    2 unique versions available

  20. 1915 Map of Haywards
    1915 Map of Haywards
    1915 Haywards
    1915 Print · USGS
    The East Bay shoreline and inland foothills are shown here in the mid-1910s during a height of coastal industry. Genealogists and historians can trace old shipping points like Mulford Landing, early salt operations at Union City Salt Works, and the rail lines of the Western Pacific.
    4 unique versions available

  21. 1915 Map of Concord
    1915 Map of Concord
    1915 Concord
    1915 Print · USGS
    Contra Costa and Alameda counties are shown here just before the mid-century population boom, when the East Bay was a landscape of ranchos and rail stops. Genealogists can trace family footprints in small 1910s settlements like Moraga, Pacheco, and Lafayette.
    5 unique versions available

  22. 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

  23. 1916 Map of Lone Tree Valley
    1916 Map of Lone Tree Valley
    1916 Lone Tree Valley
    1916 Print · USGS
    Contra Costa County at the onset of the motor age reveals a landscape of ranching valleys and early energy infrastructure. Researchers can trace the routes of Sand Creek and Marsh Creek, locate the isolated Deer Valley School, and see the early Oil Tanks in Markley Canyon.
    2 unique versions available

  24. 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

  25. 1916 Map of Byron Hot Springs
    1916 Map of Byron Hot Springs
    1916 Byron Hot Springs
    1916 Print · USGS
    Eastern Contra Costa County was a landscape of historic land grants and early rail travel in the years before the Great War. Researchers can trace the original Southern Pacific route serving Byron and the specialized resort grounds of Byron Hot Springs.
    2 unique versions available

Showing maps 1-25 of 242

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