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Old Maps of Rancho Santa Margarita, California for Genealogy

Trace your family roots with 33 historic maps of Rancho Santa Margarita. These high-res maps reveal old neighborhoods, homesites, landmarks, and streets — helping you uncover where your ancestors lived and how the area evolved over time.

  • Explore historic neighborhoods: Identify where your relatives may have lived in the 1800s or 1900s.
  • Compare maps over time: Trace the changes in streets, buildings, and landmarks for multi-generational research.
  • Perfect for genealogy & ancestry research: Used by family historians and researchers to map out lineage and migration.

These maps are an incredible resource for exploring your personal connection to Rancho Santa Margarita's past.

Rancho Santa Margarita, CA maps

(33)
  1. 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
  4. 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
  7. 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
  10. 1935 Map of El Toro
    1935 Map of El Toro
    1935 El Toro
    1935 Print · USGS
    Orange County ranching culture thrives in the 1930s, centered on the settlement of El Toro and the surrounding canyon washes. Researchers can trace early infrastructure along the Atchison Topeka and Santa Fe railroad and locate historic homesteads like Moulton Ranch and Serrano Place.
    4 unique versions available
  13. 1942 Map of Santiago Peak, 1943 Print
    1942 Map of Santiago Peak, 1943 Print
    1942 Santiago Peak
    1943 Print · USGS
    Orange County and the inland canyons appear here in the early 1940s, showing a landscape of small settlements and rugged mountain reaches. Genealogists and local historians can trace early holdings near San Juan Capistrano, the station at El Toro, and mountain landmarks like Modjeska.
    3 unique versions available
  16. 1947 Map of Santa Ana, 1949 Print
    1947 Map of Santa Ana, 1949 Print
    1947 Santa Ana
    1949 Print · USGS
    Southern California is depicted here in the late forties, showing the expansion of the Inland Empire and the Orange County coast. Researchers can trace the early layout of Palm Springs or locate long-standing tribal lands like the Pala Indian Reservation and Rincon Indian Res.
  19. 1948 Map of San Juan Capistrano, 1957 Print
    1948 Map of San Juan Capistrano, 1957 Print
    1948 San Juan Capistrano
    1957 Print · USGS
    Southern Orange County appears in the late 1940s as a land of expansive ranching grants and quiet valley settlements. You can trace the historic Mission at San Juan Capistrano, the winding Atchison Topeka and Santa Fe rail line, and early coastal life near South Laguna.
    3 unique versions available
  22. 1948 Map of Canada Gobernadora, 1960 Print
    1948 Map of Canada Gobernadora, 1960 Print
    1948 Canada Gobernadora
    1960 Print · USGS
    Orange County's canyon country remained largely rural in the late 1940s, split between the historic Mission Viejo and Trabuco grants. Researchers can locate the Old Mission Site, trace the original Ortega Highway, and find the San Juan Hot Springs.
    2 unique versions available
  25. 1949 Map of San Juan Capistrano
    1949 Map of San Juan Capistrano
    1949 San Juan Capistrano
    1949 Print · USGS
    Coastal Orange County in the late 1940s retains its pastoral character, centered on the historic Mission at San Juan Capistrano. Genealogists and local historians can trace the early rail-and-road corridor of the Atchison Topeka and Santa Fe and the original Ortega Highway.
  28. 1949 Map of Canada Gobernadora
    1949 Map of Canada Gobernadora
    1949 Canada Gobernadora
    1949 Print · USGS
    Southern Orange County was still a landscape of vast ranchos and canyon trails in the late 1940s. Local researchers can locate the Old Mission Site, trace the original Ortega Highway, or follow the course of Cañada Gobernadora before modern development.
    2 unique versions available
  31. 1949 Map of Santa Ana
    1949 Map of Santa Ana
    1949 Santa Ana
    1949 Print · USGS
    Southern California underwent a profound transformation in the late 1940s as military installations and citrus groves shared the landscape. Researchers can trace early coastal growth at Laguna Beach, military history at Camp Pendleton, and the rail corridors of the Pacific Electric.
  34. 1949 Map of El Toro, 1958 Print
    1949 Map of El Toro, 1958 Print
    1949 El Toro
    1958 Print · USGS
    Post-war Orange County centers on the massive El Toro Naval Air Station Reservation and the nearby rural settlement of El Toro. Genealogists and local historians can trace the early layout of the El Toro Cem, the Silverado School, and family landmarks like Serrano Place.
    2 unique versions available
  37. 1950 Map of El Toro
    1950 Map of El Toro
    1950 El Toro
    1950 Print · USGS
    Orange County's inland valleys and canyons are documented here in the mid-twentieth century, just as military expansion began to reshape the landscape. Local historians can trace the El Toro Air Station Naval Reservation, the El Toro Cem, and rural mountain life in Modjeska.
    2 unique versions available
  40. 1954 Map of Santiago Peak, 1955 Print
    1954 Map of Santiago Peak, 1955 Print
    1954 Santiago Peak
    1955 Print · USGS
    Orange County's high backcountry and canyons are captured in the mid-fifties before heavy suburbanization transformed the region. Researchers can trace historic access routes and mountain landmarks like the Ramakrishna Monastery, Trabuco Oaks, and Santiago Peak.
    7 unique versions available
  43. 1956 Map of Santa Ana
    1956 Map of Santa Ana
    1956 Santa Ana
    1956 Print · USGS
    Southern California underwent massive mid-century transformation as suburban growth met major military and water projects. Trace the postwar expansion of Santa Ana and Riverside, the layout of Camp Pendleton, and the path of the Colorado River Aqueduct.
  46. 1959 Map of Santa Ana, 1971 Print
    1959 Map of Santa Ana, 1971 Print
    1959 Santa Ana
    1971 Print · USGS
    Southern California is captured in a decade of transformation, from the Orange County coast to the desert floor. Researchers can trace the mid-century footprints of Camp Pendleton, March Air Force Base, and the original Ortega Highway.
    3 unique versions available
  49. 1960 Map of Santa Ana
    1960 Map of Santa Ana
    1960 Santa Ana
    1960 Print · USGS
    Southern California's coastal plains and inland deserts meet in this mid-century survey of the burgeoning Orange and Riverside county corridors. Researchers can trace the layout of early freeway systems, find tribal lands like the Soboba Indian Reservation, and locate military landmarks such as March Field.
    2 unique versions available
  52. 1965 Map of Santa Ana
    1965 Map of Santa Ana
    1965 Santa Ana
    1965 Print · USGS
    Southern California is captured in a decade of rapid growth, showing the coastal expansion from Santa Ana down to Oceanside. Genealogists and historians can trace the mid-century development of places like Garden Grove or the rural reaches of Escondido and the Palomar Observatory.
  55. 1968 Map of San Juan Capistrano, 1969 Print
    1968 Map of San Juan Capistrano, 1969 Print
    1968 San Juan Capistrano
    1969 Print · USGS
    Coastal Orange County in the late sixties shows the emergence of iconic master-planned communities and the infrastructure of the postwar boom. Genealogists and local historians can trace early neighborhood layouts in Laguna Hills and Laguna Niguel or locate landmarks like the Paz Landing Strip.
    4 unique versions available
  58. 1968 Map of El Toro, 1970 Print
    1968 Map of El Toro, 1970 Print
    1968 El Toro
    1970 Print · USGS
    Orange County's mix of military expansion and rural canyon life is captured here during the late sixties. Researchers can trace the massive El Toro Marine Corps Air Station, find old family plots at Ascension Cem, and see the early International Raceway.
    9 unique versions available
  61. 1968 Map of Canada Gobernadora, 1970 Print
    1968 Map of Canada Gobernadora, 1970 Print
    1968 Canada Gobernadora
    1970 Print · USGS
    Orange County's canyon country comes alive in the late sixties as this survey documents a landscape of historic mission sites and geothermal springs. Researchers can locate the Mission Vieja site, explore the San Juan Hot Springs, and trace the paths of Arroyo Trabuco and Ca‘ada Chiquita.
    8 unique versions available
  64. 1974 Map of El Toro, 1975 Print
    1974 Map of El Toro, 1975 Print
    1974 El Toro
    1975 Print · USGS
    Orange County's military and agricultural landscape is captured with exceptional clarity in the mid-seventies just as development began pressing into the hills. Researchers can trace the full footprint of the El Toro Marine Corps Air Station and the rising terrain of the eastern Ridge.
  67. 1974 Map of Santiago Peak, 1975 Print
    1974 Map of Santiago Peak, 1975 Print
    1974 Santiago Peak
    1975 Print · USGS
    Orange County's high summits and deep canyons are captured in detail during the mid-seventies, showing the landscape as it appeared before major suburban growth. Researchers can trace the rugged drainage patterns of Silverado Canyon and the prominent heights of Santiago Peak.
  70. 1974 Map of Canada Gobernadora, 1977 Print
    1974 Map of Canada Gobernadora, 1977 Print
    1974 Canada Gobernadora
    1977 Print · USGS
    Southern Orange County appears in detailed 1970s aerial photography, showcasing the rural canyon systems before suburban expansion. Trace the natural paths of Cañada Gobernadora, Gabino Canyon, and Lucas Canyon across the landscape.
  73. 1974 Map of San Juan Capistrano, 1977 Print
    1974 Map of San Juan Capistrano, 1977 Print
    1974 San Juan Capistrano
    1977 Print · USGS
    Coastal Orange County undergoes a period of rapid suburban growth in the mid-1970s, as seen from this unique aerial perspective. Researchers can trace the early development of modern residential tracts and infrastructure surrounding the historic San Juan Capistrano.
Showing maps 1-25 of 33

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Frequently asked questions

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