Old Maps of Contra Costa County, California for Metal Detecting

Plan your next treasure hunt with 141 historic maps of Contra Costa County. Find old homesites, ghost towns, trails, and gathering spots that may be lost to time — perfect for identifying promising metal detecting locations.

  • Locate forgotten sites: Uncover places like long-lost settlements, abandoned rail lines, or gathering spots.
  • Plan better hunts: Use map overlays combined with LiDAR or satellite views to narrow in on historically rich areas.
  • Made for detectorists: Thousands of hobbyists use these maps to discover relics, coins, and hidden history.

Use these historic maps to boost your research and find new opportunities beneath the surface of Contra Costa County.


Contra Costa County, CA maps

(141)
  1. 1895 Map of San Francisco
    1895 Map of San Francisco
    1895 San Francisco
    1895 Print · USGS
    Covers Contra Costa County, including San Francisco, Oakland, and other nearby areas

  2. 1896 Map of Carquinez Strait, 1954 Print
    1896 Map of Carquinez Strait, 1954 Print
    1896 Carquinez Strait
    1954 Print · USGS
    Covers Contra Costa County, including Concord, Vallejo, and other nearby areas

  3. 1896 Map of Mt. Diablo, 1964 Print
    1896 Map of Mt. Diablo, 1964 Print
    1896 Mt. Diablo
    1964 Print · USGS
    Covers Contra Costa County, including Concord, Antioch, and other nearby areas

  4. 1897 Map of Concord
    1897 Map of Concord
    1897 Concord
    1897 Print · USGS
    Covers Contra Costa County, including Oakland, Concord, and other nearby areas
    6 unique versions available

  5. 1898 Map of Karquines
    1898 Map of Karquines
    1898 Karquines
    1898 Print · USGS
    Covers Contra Costa County, including Concord, Vallejo, and other nearby areas

  6. 1898 Map of Mt. Diablo
    1898 Map of Mt. Diablo
    1898 Mt. Diablo
    1898 Print · USGS
    Covers Contra Costa County, including Concord, Antioch, and other nearby areas
    7 unique versions available

  7. 1899 Map of San Francisco
    1899 Map of San Francisco
    1899 San Francisco
    1899 Print · USGS
    Covers Contra Costa County, including San Francisco, Oakland, and other nearby areas
    7 unique versions available

  8. 1899 Map of Haywards
    1899 Map of Haywards
    1899 Haywards
    1899 Print · USGS
    Covers Contra Costa County, including Oakland, Fremont, and other nearby areas
    5 unique versions available

  9. 1901 Map of Karquines
    1901 Map of Karquines
    1901 Karquines
    1901 Print · USGS
    Covers Contra Costa County, including Concord, Vallejo, and other nearby areas
    6 unique versions available

  10. 1902 Map of Napa
    1902 Map of Napa
    1902 Napa
    1902 Print · USGS
    Covers Contra Costa County, including Concord, Vallejo, and other nearby areas
    6 unique versions available

  11. 1906 Map of Pleasanton
    1906 Map of Pleasanton
    1906 Pleasanton
    1906 Print · USGS
    Covers Contra Costa County, including Fremont, Hayward, and other nearby areas
    5 unique versions available

  12. 1907 Map of Antioch, 1955 Print
    1907 Map of Antioch, 1955 Print
    1907 Antioch
    1955 Print · USGS
    Covers Contra Costa County, including Concord, Fairfield, and other nearby areas

  13. 1908 Map of Antioch
    1908 Map of Antioch
    1908 Antioch
    1908 Print · USGS
    Covers Contra Costa County, including Concord, Fairfield, and other nearby areas
    5 unique versions available

  14. 1910 Map of Bouldin
    1910 Map of Bouldin
    1910 Bouldin
    1910 Print · USGS
    Covers Contra Costa County, including Sacramento County, San Joaquin County, and other nearby areas
    3 unique versions available

  15. 1910 Map of Jersey
    1910 Map of Jersey
    1910 Jersey
    1910 Print · USGS
    Covers Contra Costa County, including Oakley, Bethel Island, and other nearby areas
    3 unique versions available

  16. 1911 Map of Byron Hot Springs
    1911 Map of Byron Hot Springs
    1911 Byron Hot Springs
    1911 Print · USGS
    Covers Contra Costa County, including Byron, Alameda County, and other nearby areas

  17. 1913 Map of Woodward Island
    1913 Map of Woodward Island
    1913 Woodward Island
    1913 Print · USGS
    Covers Contra Costa County, including Oakley, Discovery Bay, and other nearby areas

  18. 1914 Map of Brentwood
    1914 Map of Brentwood
    1914 Brentwood
    1914 Print · USGS
    Covers Contra Costa County, including Antioch, Brentwood, and other nearby areas

  19. 1914 Map of Bethany
    1914 Map of Bethany
    1914 Bethany
    1914 Print · USGS
    Covers Contra Costa County, including Mountain House, Alameda County, and other nearby areas
    2 unique versions available

  20. 1915 Map of Haywards
    1915 Map of Haywards
    1915 Haywards
    1915 Print · USGS
    Covers Contra Costa County, including Oakland, Fremont, and other nearby areas
    4 unique versions available

  21. 1915 Map of Concord
    1915 Map of Concord
    1915 Concord
    1915 Print · USGS
    Covers Contra Costa County, including Oakland, Concord, and other nearby areas
    5 unique versions available

  22. 1915 Map of San Francisco
    1915 Map of San Francisco
    1915 San Francisco
    1915 Print · USGS
    Covers Contra Costa County, including San Francisco, Oakland, and other nearby areas
    6 unique versions available

  23. 1916 Map of Lone Tree Valley
    1916 Map of Lone Tree Valley
    1916 Lone Tree Valley
    1916 Print · USGS
    Covers Contra Costa County, including Antioch, Pittsburg, and other nearby areas
    2 unique versions available

  24. 1916 Map of Mare Island
    1916 Map of Mare Island
    1916 Mare Island
    1916 Print · USGS
    Covers Contra Costa County, including Vallejo, Richmond, and other nearby areas
    4 unique versions available

  25. 1916 Map of Byron Hot Springs
    1916 Map of Byron Hot Springs
    1916 Byron Hot Springs
    1916 Print · USGS
    Covers Contra Costa County, including Byron, Alameda County, and other nearby areas
    2 unique versions available

Showing maps 1-25 of 141

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Frequently asked questions

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