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

Explore 551 historic maps of Los Angeles 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 Los Angeles 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 Los Angeles County's history through authentic maps from the 1900s. This is your window into the past.

Los Angeles County, CA maps

(551)
  1. 1900 Map of Pasadena
    1900 Map of Pasadena
    1900 Pasadena
    1900 Print · USGS
    The San Gabriel Valley is captured here at a pivotal moment of expansion just as the rail networks reached the foothills. Researchers can trace the layout of early Pasadena and Monrovia, locate the Echo Mountain Mt. Lowe Hotel, or find the historic Mission and Raymond Hotel.
    10 unique versions available
  4. 1900 Map of Tujunga
    1900 Map of Tujunga
    1900 Tujunga
    1900 Print · USGS
    The San Gabriel mountains in the late nineteenth century reveal a landscape of deep canyons and mining outposts. Trace early rail travel through Acton or locate the remote Monte Cristo Mines and Hoyt Ranch within the San Gabriel Timber Land Reserve.
    7 unique versions available
  7. 1900 Map of Los Angeles
    1900 Map of Los Angeles
    1900 Los Angeles
    1900 Print · USGS
    Greater Los Angeles was a mosaic of expansive ranchos and emerging rail towns at the turn of the century. You can trace the early footprints of Hollywood, locate the historic Soldiers Home, and follow the mountain rails to the Echo Mountain Mt. Lowe Hotel.
    4 unique versions available
  10. 1900 Map of Fernando
    1900 Map of Fernando
    1900 Fernando
    1900 Print · USGS
    The San Fernando Valley and San Gabriel mountains appear here in the final years of the nineteenth century, showing the early town site of Fernando and the San Fernando Mission. Genealogists and historians can trace the Southern Pacific RR through Soledad Canyon or locate early settlements like Lang and Honby.
    6 unique versions available
  13. 1900 Map of Triunfo Pass
    1900 Map of Triunfo Pass
    1900 Triunfo Pass
    1900 Print · USGS
    In the final year of the nineteenth century, the coast between Ventura and Los Angeles remained a series of massive ranchos and canyons. Genealogists and historians can trace early settlements like Newbury Park and Vejor, or follow the ancient Boundary Line across the Santa Monica Mountains.
    2 unique versions available
  16. 1900 Map of Cucamonga
    1900 Map of Cucamonga
    1900 Cucamonga
    1900 Print · USGS
    San Bernardino and Los Angeles Counties are shown here during the late nineteenth-century citrus boom, before urban sprawl merged these distinct agricultural colonies. Trace early rail lines through Ioamosa, Claremont, and Chino, or locate the isolated Toll House and Power House in the northern canyons.
  19. 1901 Map of Southern California Sheet No. 1
    1901 Map of Southern California Sheet No. 1
    1901 Southern California Sheet No. 1
    1901 Print · USGS
    Greater Los Angeles at the dawn of the twentieth century is a landscape of growing citrus towns and a burgeoning rail network. Genealogists and historians can trace the early gridded streets of Hollywood and Pasadena or locate landmarks like Bear Lake and the Cahuilla Indian Reservation.
    6 unique versions available
  22. 1901 Map of Anaheim
    1901 Map of Anaheim
    1901 Anaheim
    1901 Print · USGS
    Orange County's citrus and rail heartland is meticulously detailed at the start of the century, showing the early layouts of Anaheim and Fullerton. Genealogists can trace early homesteads and rail stops like Loara, Miraflores, and Olinda.
    6 unique versions available
  25. 1902 Map of Santa Monica
    1902 Map of Santa Monica
    1902 Santa Monica
    1902 Print · USGS
    The Los Angeles basin is shown here just as the old rancho boundaries began to give way to early suburban developments like Hollywood and Santa Monica. Genealogists and historians can trace the early rail networks, the grounds of the Soldiers Home, and vanished place names like Sherman and Tropico.
    4 unique versions available
  28. 1902 Map of Downey
    1902 Map of Downey
    1902 Downey
    1902 Print · USGS
    The Los Angeles coastal plain at the turn of the century shows a network of early citrus towns and Spanish rancho boundaries. Trace the development of the river system and rail stops like Poor Farm Sta., Fulton Wells, and the growing community of Whittier.
    9 unique versions available
  31. 1902 Map of Corona
    1902 Map of Corona
    1902 Corona
    1902 Print · USGS
    The Orange County and Riverside borderlands at the start of the 1900s show an era of rapid rail expansion and water engineering. Researchers can trace the early footprints of Anaheim and Orange or find vanished industry at the Santiago Coal Mine.
    7 unique versions available
  34. 1903 Map of Calabasas
    1903 Map of Calabasas
    1903 Calabasas
    1903 Print · USGS
    The northern reaches of the Santa Monica Mountains and the western San Fernando Valley are shown here at the turn of the century. Genealogists and historians can trace early ranch boundaries like Encino and Las Virgenes, or locate the original sites of Grape Arbor and the Chatsworth Park Branch railroad.
    8 unique versions available
  37. 1903 Map of Tejon
    1903 Map of Tejon
    1903 Tejon
    1903 Print · USGS
    The high passes and desert fringes of the Tehachapis come alive in this survey of the early twentieth-century frontier. Genealogists and historians can trace the foundations of Old Fort Tejon, follow the trail through Tejon Pass, or locate early mining sites like Frazier Mine.
    7 unique versions available
  40. 1903 Map of Rock Creek
    1903 Map of Rock Creek
    1903 Rock Creek
    1903 Print · USGS
    The high San Gabriel peaks and the edge of the Mojave come alive in this turn-of-the-century survey. Researchers can trace early mountain resorts and outposts like Squirrel Inn and Big Rock Villa or the geological wonder of the Devils Punchbowl.
    6 unique versions available
  43. 1903 Map of Camulos
    1903 Map of Camulos
    1903 Camulos
    1903 Print · USGS
    Southern California at the dawn of the twentieth century shows a landscape of ranchos and early rail towns. Trace the old routes through Simi and Camulos, or locate vanished stops like Ternez Siding and the coastal piers at Port Los Angeles.
    5 unique versions available
  46. 1903 Map of Cucamonga
    1903 Map of Cucamonga
    1903 Cucamonga
    1903 Print · USGS
    The Inland Empire is shown at a pivotal moment of agricultural expansion in the early twentieth century, when irrigation was transforming the valley. Trace the early rail networks of the Southern Pacific and the Santa Fe through citrus-growing centers like Ontario, Cucamonga, and Ioamosa.
    11 unique versions available
  49. 1903 Map of San Antonio
    1903 Map of San Antonio
    1903 San Antonio
    1903 Print · USGS
    The high divide of the San Gabriel Mountains is captured here at the turn of the century, showing the early boundaries of the San Gabriel Timber Land Reserve. Local history enthusiasts can trace the old paths through Swartout Valley, the depths of Mine Gulch, and the descent into Lone Pine Canyon.
    7 unique versions available
  52. 1903 Map of Santa Susana
    1903 Map of Santa Susana
    1903 Santa Susana
    1903 Print · USGS
    Northern Los Angeles and Ventura counties are captured here at the start of the twentieth century, as the railroad transformed the frontier. Trace early rail hubs at Newhall and Saugus, and find the engineering feats of the Santa Susana Tunnel and Fernando Tunnel.
    8 unique versions available
  55. 1904 Map of Pomona
    1904 Map of Pomona
    1904 Pomona
    1904 Print · USGS
    The eastern San Gabriel Valley is shown here at the turn of the century as a burgeoning network of citrus towns and vital rail lines. Genealogists can trace early homesteads and vanished stops such as Lordsburg, Alosta, and the Rowland Siding along the Southern Pacific RR.
    7 unique versions available
  58. 1904 Map of Southern California Sheet No. 1, 1905 Print
    1904 Map of Southern California Sheet No. 1, 1905 Print
    1904 Southern California Sheet No. 1
    1905 Print · USGS
    Southern California at the dawn of the twentieth century shows a landscape of citrus groves and coastal towns connected by rail. Genealogists and historians can trace early settlements like San Juan Capistrano, find remote sites like the Rose Mine, and study the original water systems of the Santa Ana River.
    2 unique versions available
  61. 1915 Map of Elizabeth Lake
    1915 Map of Elizabeth Lake
    1915 Elizabeth Lake
    1915 Print · USGS
    Antelope Valley and the northern reaches of the San Gabriel mountains were transforming in the early twentieth century as major water and rail projects arrived. Genealogists can trace family homesteads such as St Anthony Ranch, old desert outposts like Willow Springs, and early mining sites including the Gray Eagle Mine.
    2 unique versions available
  64. 1917 Map of Elizabeth Lake
    1917 Map of Elizabeth Lake
    1917 Elizabeth Lake
    1917 Print · USGS
    The western Antelope Valley and Sierra Pelona appear here during a period of rapid hydraulic and rail expansion. Researchers can trace the original path of the Los Angeles Aqueduct and locate early landmarks like Willow Springs and the Antelope Valley Pumping Sta.
    6 unique versions available
  67. 1920 Map of Santa Monica
    1920 Map of Santa Monica
    1920 Santa Monica
    1920 Print · USGS
    The Los Angeles basin and San Fernando Valley are captured here just after the war as agriculture gives way to early suburban sprawl. Genealogists and historians can trace the early grids of Beverly Hills, Sawtelle, and Van Nuys alongside the sprawling Salt Lake Oil Fields.
  70. 1921 Map of Triunfo Pass
    1921 Map of Triunfo Pass
    1921 Triunfo Pass
    1921 Print · USGS
    The coastal canyons and mountain passes of Ventura and Los Angeles counties are captured here at the turn of the century. Genealogists and historians can trace early settlements at Newbury Park and Triunfo, or follow the rugged drainage of Dume Canyon to the sea.
    3 unique versions available
  73. 1921 Map of Santa Monica
    1921 Map of Santa Monica
    1921 Santa Monica
    1921 Print · USGS
    Los Angeles and the San Fernando Valley are captured here just as the suburban boom began to accelerate. Genealogists and researchers can trace the rail-connected origins of Lankershim, Universal City, and the Salt Lake Oil Fields.
    3 unique versions available
Showing maps 1-25 of 551

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Frequently asked questions

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