1900s (20th Century) Maps of Idria, California
Explore 11 historic maps of Idria 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 Idria'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 Idria's history through authentic maps from the 1900s. This is your window into the past.
Idria, CA maps
(11)- 1915 Map of Priest Valley
1915 Priest Valley1915 Print · USGSCoastal range life in the early 1900s centered on remote mines and valley ranching hubs. Researchers can trace rural school districts like Columbus School and explore early mining operations such as the Monterey Coalmine or the New Idria Idria P O.5 unique versions available - 1943 Map of New Idria
1943 New Idria1943 Print · USGSSan Benito and Fresno counties were centers of intensive mercury mining in the early 1940s. Genealogists and industrial historians can trace early claims like the Spanish Mine and Florence Mack Mine or locate the remote New Idria Idria PO.2 unique versions available - 1948 Map of Santa Cruz
1948 Santa Cruz1948 Print · USGSThe Central Coast and San Joaquin Valley meet in this mid-century look at the region's agricultural and military geography. Genealogists and historians can trace the paths of El Camino Real, locate family farms near Hollister, or study the footprint of the Fort Ord Military Reservation.2 unique versions available - 1955 Map of Santa Cruz
1955 Santa Cruz1955 Print · USGSCoastal Monterey Bay and the fertile Salinas Valley are captured here during the post-war expansion of the mid-fifties. Researchers can trace the era's rail-and-road network via the Southern Pacific lines and find landmarks like Fort Ord or the Lonoak School. - 1956 Map of New Idria
1956 New Idria1956 Print · USGSThe Diablo Range's remote mining country is captured here in the mid-fifties, centered on the settlement of New Idria. Genealogists and historians can trace the industrial footprint of the San Carlos Mine, Alpine Mine, and the Jade Mill.3 unique versions available - 1957 Map of Santa Cruz
1957 Santa Cruz1957 Print · USGSCentral California comes into sharp focus during the late fifties, from the fog-swept Monterey Bay to the sun-drenched San Joaquin Valley. Genealogists and historians can trace the mid-century footprints of Fort Ord Military Reservation, the Southern Pacific line, and the historic streets of San Juan Bautista. - 1958 Map of Santa Cruz
1958 Santa Cruz1958 Print · USGSCoastal California and the central valleys are shown during the mid-fifties, capturing a landscape of massive military reserves and vital rail arteries. Genealogists and historians can trace the Southern Pacific line through Salinas or explore the early footprints of the Fort Ord Military Reservation and San Juan Bautista.2 unique versions available - 1965 Map of Santa Cruz, 1968 Print
1965 Santa Cruz1968 Print · USGSThe Central Coast and San Joaquin Valley meet here during the mid-sixties, capturing the growth of agricultural and coastal hubs. Trace the historic Southern Pacific RR lines and locate sites like the Presidio of Monterey or Pinnacles National Monument. - 1969 Map of Idria, 1973 Print
1969 Idria1973 Print · USGSSan Benito County’s quicksilver mining district is shown in high detail during the late sixties. Researchers can trace the industrial layout of the New Idria Mine, the remote outpost of Idria, and numerous family-named claims like the Sampson Mine.2 unique versions available - 1974 Map of Monterey, 1977 Print
1974 Monterey1977 Print · USGSThe Central Coast and San Joaquin Valley meet in this mid-seventies survey of the Monterey region. Genealogists and historians can locate Spanish-era sites like the San Antonio de Padua Mission, early industrial markers such as the New Idria Mine, and coastal landmarks like the Point Sur Lighthouse. - 1987 Map of Coalinga
1987 Coalinga1987 Print · USGSCentral California's rugged interior and industrial valleys come into focus in the late eighties. Researchers can trace the massive Coalinga Oil Field, follow the Southern Pacific rail lines, and locate remote outposts like Idria and Lonoak.
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