Old Maps of Atascadero, California for Metal Detecting
Plan your next treasure hunt with 22 historic maps of Atascadero. 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 Atascadero.
Atascadero, CA maps
(22)- 1897 Map of San Luis Obispo
1897 San Luis Obispo1897 Print · USGSCoastal California in the late nineteenth century centers on the vital Southern Pacific Line as it carves through the Santa Lucia Range. Genealogists and historians can trace the early city grid of San Luis Obispo and rural stops like Goldtree and Cuesta.4 unique versions available - 1900 Map of San Luis
1900 San Luis1900 Print · USGSCoastal California at the turn of the century shows a landscape where rail lines like the Pacific Coast Ry met the sea. Trace early industrial sites like the Asphalt Mines or follow the coast from Morro Rock to the pier at Port Harford.4 unique versions available - 1919 Map of Paso Robles
1919 Paso Robles1919 Print · USGSSan Luis Obispo County in the late nineteen-teens shows a landscape where the railroad spurred the growth of cattle and grain hubs. Researchers can trace the layout of Paso Robles or find rural landmarks like San Miguel Mission and Geneseo School.5 unique versions available - 1942 Map of San Luis Obispo
1942 San Luis Obispo1942 Print · USGSSan Luis Obispo and the surrounding Santa Lucia Range are captured here just before the mid-century expansion, centered on the Southern Pacific rail line. Researchers can trace early campus boundaries at the California Polytechnic School and find rural landmarks like Stowe Sch and Eagle Ranch.2 unique versions available - 1943 Map of Paso Robles
1943 Paso Robles1943 Print · USGSMid-century San Luis Obispo County is defined here by the river-and-rail corridor connecting Paso Robles to its rural agricultural outposts during the war years. Genealogists and historians can trace local family landmarks and district hubs like San Miguel Mission, Creston, and the Oak Flat School. - 1947 Map of San Luis Obispo, 1948 Print
1947 San Luis Obispo1948 Print · USGSCoastal California at the dawn of the Cold War reveals a landscape of massive military reservations and quiet seaside towns. Genealogists and researchers can trace the Southern Pacific rail line, old mining sites like Los Burros Mine, and local landmarks from Point Buchon to the Carrizo Plain. - 1948 Map of San Luis Obispo
1948 San Luis Obispo1948 Print · USGSCentral Coast life in the late 1940s is centered on the Southern Pacific rail line and expanding military bases. Genealogists can trace early rural life through Union School and local operations like the Klau Mine or Buena Vista Mine. - 1948 Map of Templeton, 1952 Print
1948 Templeton1952 Print · USGSThe Salinas River valley was a busy agricultural corridor in the late 1940s, anchored by the rail line and the growing community of Templeton. Genealogists and historians can trace family locations near Poultry Farms, the Eureka Sch, and the Templeton Cem.6 unique versions available - 1948 Map of Paso Robles, 1955 Print
1948 Paso Robles1955 Print · USGSMid-century San Luis Obispo County comes to life along the Salinas River valley as the region's agricultural and transit networks solidified. Researchers can trace the Southern Pacific rail line through Paso Robles and locate vanished landmarks like Bethel School (Aband) and the Old Adobe.2 unique versions available - 1952 Map of San Luis Obispo, 1954 Print
1952 San Luis Obispo1954 Print · USGSSan Luis Obispo County in the early fifties shows a landscape of burgeoning colleges, military grounds, and historic mines. Trace the Southern Pacific rail line as it winds past Santa Margarita and the Pick and Shovel Mine.2 unique versions available - 1956 Map of San Luis Obispo, 1963 Print
1956 San Luis Obispo1963 Print · USGSCentral California coastal and valley life unfolds in the mid-fifties, from the shoreline of Pismo Beach to the arid Carrizo Plain. Trace early travel routes along the Southern Pacific RR or locate family sites near the Templeton Cemetery and Paso Robles County Cemetery.5 unique versions available - 1957 Map of San Luis Obispo
1957 San Luis Obispo1957 Print · USGSCoastal California in the late fifties is defined by the steep Santa Lucia Range and the rail-connected hub of San Luis Obispo. Genealogists and researchers can trace rural life via Union School, the Southern Pacific line, and old sites like the Polar Star Mine. - 1958 Map of San Luis Obispo
1958 San Luis Obispo1958 Print · USGSThe Central Coast in the late fifties reveals a landscape of ranching and early tourism before the massive expansion of the modern era. Trace the path of the Southern Pacific through Atascadero or locate family roots in coastal towns like Cayucos and Cambria. - 1961 Map of Paso Robles, 1968 Print
1961 Paso Robles1968 Print · USGSSan Luis Obispo County’s interior emerges here in the early 1960s, centered on the Salinas River valley and its established rail-and-highway routes. Researchers can trace the layout of Paso Robles, locate the Templeton Cem, or find rural sites like Whitley Gardens and the Estrella Adobe Ch.2 unique versions available - 1965 Map of Atascadero, 1966 Print
1965 Atascadero1966 Print · USGSMid-century San Luis Obispo County comes to life as Atascadero expands between the Salinas River and the Santa Lucia mountains. Genealogists and historians can trace local landmarks like Santa Rosa Sch, the Atascadero State Hospital, and the heights of Cerro Alto Lookout.4 unique versions available - 1965 Map of Santa Margarita, 1967 Print
1965 Santa Margarita1967 Print · USGSSanta Margarita and the Salinas River valley are captured in the mid-sixties as the railroad and ranching culture shaped the landscape. Genealogists can locate family sites at the Santa Margarita Cemetery, the Asistencia de Santa Margarita (Ruins), and Garden Farms.3 unique versions available - 1981 Map of San Luis Obispo
1981 San Luis Obispo1981 Print · USGSThe Central Coast comes alive in the early eighties as the Southern Pacific railroad connects growing coastal towns and rugged inland ranges. Researchers can trace land grants like Santa Manuela, locate Cem sites, and explore the footprint of California Polytechnic State University.3 unique versions available - 1989 Map of Paso Robles
1989 Paso Robles1989 Print · USGSCoastal mountains and the Salinas River valley meet in the late eighties as this region balances military installations and agriculture. Genealogists and historians can trace the Southern Pacific line through Paso Robles and Templeton or locate the Klau Mine and San Miguel. - 1995 Map of Atascadero, 2000 Print
1995 Atascadero2000 Print · USGSAtascadero and the Salinas River valley are captured in the mid-nineties as suburban growth pressed against the Santa Lucia Range. Researchers can locate established landmarks like the Atascadero State Hospital, the Charles Paddock Zoo, and Atascadero Lake. - 2021 Map of Santa Margarita, 2021 Print
2021 Santa Margarita2021 Print · USGSThe headwaters of the Salinas River meet modern California water infrastructure in the early 2020s. Researchers can trace family history at the Santa Margarita Cem or explore the geography of Garden Farms and Cushing. - 2021 Map of Atascadero, 2021 Print
2021 Atascadero2021 Print · USGSThe community of Atascadero stands at the edge of the Los Padres National Forest in this recent survey. Researchers can trace local landmarks like Atascadero Lake, the Atascadero Pine Mountain Cem, and high summits like Tassajera Peak. - 2021 Map of Templeton, 2021 Print
2021 Templeton2021 Print · USGSThe Salinas River valley comes into focus during the early 2020s, showing the connectivity between Templeton, Atascadero, and Paso Robles. Trace family history at the Templeton Cem or follow the historic Union Pacific rail corridor.
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