1900s (20th Century) Maps of Contra Costa County, California
Explore 133 historic maps of Contra Costa 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 Contra Costa 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 Contra Costa County's history through authentic maps from the 1900s. This is your window into the past.
Contra Costa County, CA maps
(133)- 1901 Map of Karquines
1901 Karquines1901 Print · USGSCovers Contra Costa County, including Concord, Vallejo, and other nearby areas6 unique versions available - 1902 Map of Napa
1902 Napa1902 Print · USGSCovers Contra Costa County, including Concord, Vallejo, and other nearby areas6 unique versions available - 1906 Map of Pleasanton
1906 Pleasanton1906 Print · USGSCovers Contra Costa County, including Fremont, Hayward, and other nearby areas5 unique versions available - 1907 Map of Antioch, 1955 Print
1907 Antioch1955 Print · USGSCovers Contra Costa County, including Concord, Fairfield, and other nearby areas - 1908 Map of Antioch
1908 Antioch1908 Print · USGSCovers Contra Costa County, including Concord, Fairfield, and other nearby areas5 unique versions available - 1910 Map of Bouldin
1910 Bouldin1910 Print · USGSCovers Contra Costa County, including Sacramento County, San Joaquin County, and other nearby areas3 unique versions available - 1910 Map of Jersey
1910 Jersey1910 Print · USGSCovers Contra Costa County, including Oakley, Bethel Island, and other nearby areas3 unique versions available - 1911 Map of Byron Hot Springs
1911 Byron Hot Springs1911 Print · USGSCovers Contra Costa County, including Byron, Alameda County, and other nearby areas - 1913 Map of Woodward Island
1913 Woodward Island1913 Print · USGSCovers Contra Costa County, including Oakley, Discovery Bay, and other nearby areas - 1914 Map of Brentwood
1914 Brentwood1914 Print · USGSCovers Contra Costa County, including Antioch, Brentwood, and other nearby areas - 1914 Map of Bethany
1914 Bethany1914 Print · USGSCovers Contra Costa County, including Mountain House, Alameda County, and other nearby areas2 unique versions available - 1915 Map of Haywards
1915 Haywards1915 Print · USGSCovers Contra Costa County, including Oakland, Fremont, and other nearby areas4 unique versions available - 1915 Map of Concord
1915 Concord1915 Print · USGSCovers Contra Costa County, including Oakland, Concord, and other nearby areas5 unique versions available - 1915 Map of San Francisco
1915 San Francisco1915 Print · USGSCovers Contra Costa County, including San Francisco, Oakland, and other nearby areas6 unique versions available - 1916 Map of Lone Tree Valley
1916 Lone Tree Valley1916 Print · USGSCovers Contra Costa County, including Antioch, Pittsburg, and other nearby areas2 unique versions available - 1916 Map of Mare Island
1916 Mare Island1916 Print · USGSCovers Contra Costa County, including Vallejo, Richmond, and other nearby areas4 unique versions available - 1916 Map of Byron Hot Springs
1916 Byron Hot Springs1916 Print · USGSCovers Contra Costa County, including Byron, Alameda County, and other nearby areas2 unique versions available - 1916 Map of Byron
1916 Byron1916 Print · USGSCovers Contra Costa County, including Antioch, Brentwood, and other nearby areas3 unique versions available - 1918 Map of Honker Bay
1918 Honker Bay1918 Print · USGSCovers Contra Costa County, including Concord, Pittsburg, and other nearby areas2 unique versions available - 1918 Map of Collinsville
1918 Collinsville1918 Print · USGSCovers Contra Costa County, including Antioch, Pittsburg, and other nearby areas2 unique versions available - 1940 Map of Byron, 1943 Print
1940 Byron1943 Print · USGSCovers Contra Costa County, including Antioch, Brentwood, and other nearby areas - 1940 Map of Carquinez Strait, 1963 Print
1940 Carquinez Strait1963 Print · USGSCovers Contra Costa County, including Concord, Vallejo, and other nearby areas2 unique versions available - 1941 Map of Pleasanton
1941 Pleasanton1941 Print · USGSCovers Contra Costa County, including Fremont, Hayward, and other nearby areas - 1942 Map of Mare Island
1942 Mare Island1942 Print · USGSCovers Contra Costa County, including Vallejo, Richmond, and other nearby areas - 1942 Map of Concord
1942 Concord1942 Print · USGSCovers Contra Costa County, including Oakland, Concord, and other nearby areas
Showing maps 1-25 of 133
Top cities of Contra Costa County
- Concord historical maps
- Antioch historical maps
- Richmond historical maps
- San Ramon historical maps
- Pittsburg historical maps
- Walnut Creek historical maps
See more
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?