1900s (20th Century) Maps of Alamosa, Colorado
Explore 11 historic maps of Alamosa 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 Alamosa'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 Alamosa's history through authentic maps from the 1900s. This is your window into the past.
Alamosa, CO maps
(11)- 1954 Map of Trinidad, 1963 Print
1954 Trinidad1963 Print · USGSSouthern Colorado is captured here during the mid-fifties, showing the vital rail-and-river connections between the San Luis Valley and the eastern foothills. Researchers can trace the Denver and Rio Grande Western line and locate rural landmarks like Malachite School and San Luis.2 unique versions available - 1955 Map of Trinidad, 1976 Print
1955 Trinidad1976 Print · USGSSouthern Colorado during the mid-fifties is defined by the high-altitude agriculture of the San Luis Valley and the peaks of the Culebra Range. Genealogists can trace early settlements and rural schoolhouses like Medina Plaza, San Luis, and the Trujillo Creek School. - 1958 Map of Trinidad
1958 Trinidad1958 Print · USGSSouthern Colorado in the late fifties was a landscape of high-altitude agriculture and coal production, centered on the San Luis Valley. Local historians can trace old community centers like the Malachite School or follow the mining and rail activity near Walsenburg and the Allen Mine. - 1959 Map of Trinidad
1959 Trinidad1959 Print · USGSThe San Luis Valley and the high Sangre de Cristo peaks are documented here in the late fifties, during a period of steady ranching and rail activity. Genealogy researchers can locate family-named landmarks and rural institutions like Trujillo Creek School and the historic San Luis settlement. - 1966 Map of Mount Pleasant School, 1968 Print
1966 Mount Pleasant School1968 Print · USGSAlamosa County’s San Luis Valley was a hub of intensive irrigation and rail transport in the mid-1960s. Researchers can trace the path of the Denver and Rio Grande Western railroad and locate rural landmarks like Mount Pleasant School and the Costilla Canal. - 1966 Map of Hooper SE, 1968 Print
1966 Hooper SE1968 Print · USGSAlamosa County appears in the mid-1960s as a landscape of grid-patterned roads and intensive water management. Researchers can trace the path of the Old Railroad Grade or locate historic water sources like the Costilla Canal and numerous Flowing Wells. - 1966 Map of Alamosa East, 1968 Print
1966 Alamosa East1968 Print · USGSAlamosa and the surrounding San Luis Valley are captured here in the mid-sixties, showcasing a landscape defined by the Rio Grande and a complex network of irrigation ditches. Researchers can trace the path of the Denver and Rio Grande Western railroad and locate local landmarks like the Boyd Sch and Adams Lake.3 unique versions available - 1966 Map of Alamosa West, 1969 Print
1966 Alamosa West1969 Print · USGSThe high plains of Alamosa County come into sharp focus in the mid-1960s, showing a landscape defined by industrial rail and irrigation. Trace the Denver and Rio Grande Western tracks through La Fruto and Henry, or locate family landmarks like Waverly Sch.3 unique versions available - 1982 Map of Blanca Peak, 1983 Print
1982 Blanca Peak1983 Print · USGSThe Sangre de Cristo range reaches its highest elevations in the early 1980s, towering over the shifting landscapes of the San Luis Valley. Researchers can trace the path of the Denver and Rio Grande Western railroad or locate remote settlements like Crestone, Sharpsdale, and Gardner.2 unique versions available - 1983 Map of Alamosa
1983 Alamosa1983 Print · USGSThe San Luis Valley was transitioning through the early eighties, with its historic plazas and rail corridors still clearly defined. Genealogists can trace family roots through the settlements of San Luis, Manassa, and San Acacio, or locate the Old Railroad Grade and the Denver and Rio Grande Western tracks.2 unique versions available - 1988 Map of Trinidad
1988 Trinidad1988 Print · USGSSouthern Colorado in the late eighties reveals a landscape of high-altitude farming and mountain rail corridors. Genealogists and historians can trace the foundations of San Luis and Fort Garland or find old stops on the D & R G W RR and A T & S F Ry.
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