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1900s (20th Century) Maps of Summit County, Colorado

Explore 61 historic maps of Summit 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 Summit 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 Summit County's history through authentic maps from the 1900s. This is your window into the past.

Summit County, CO maps

(61)
  1. 1924 Map of Montezuma
    1924 Map of Montezuma
    1924 Montezuma
    1924 Print · USGS
    High Colorado peaks and mining camps define the landscape during the 1920s and 1930s. Genealogists and historians can trace the foundations of Montezuma and Keystone, and locate historic operations like the Hamill Mine and Waldorf Mine.
    2 unique versions available
  4. 1926 Map of Montezuma
    1926 Map of Montezuma
    1926 Montezuma
    1926 Print · USGS
    The Continental Divide during the 1920s reveals a high-country landscape defined by its mining heritage and high mountain passes. Researchers can trace the rugged operations at the Waldorf Mine and Stevens Mine or locate the early mountain settlements of Montezuma and Swandyke.
    3 unique versions available
  7. 1929 Map of Dillon, 1955 Print
    1929 Map of Dillon, 1955 Print
    1929 Dillon
    1955 Print · USGS
    In the late 1920s, the Blue River valley was a high-country network of rail stops and mining camps before the landscape was changed by major dam projects. Genealogists and historians can trace the early footprints of Dillon, Frisco, and the Colorado and Southern railroad line.
    2 unique versions available
  10. 1933 Map of Mt. Powell
    1933 Map of Mt. Powell
    1933 Mt. Powell
    1933 Print · USGS
    The Colorado high country in the early thirties reveals a landscape of isolated mountain homesteads and remote federal forest lands. Genealogists and local historians can trace family locations like the Noonen Ranch or locate early rural schools including Upper Sheephorn Sch and Lakeside Sch.
    5 unique versions available
  13. 1933 Map of Montezuma, 1956 Print
    1933 Map of Montezuma, 1956 Print
    1933 Montezuma
    1956 Print · USGS
    The mining districts of the high Rockies are caught in a period of transition in the 1930s. Researchers can locate remote industrial sites like the Waldorf Mine and follow early mountain routes over Loveland Pass and Argentine Pass.
    3 unique versions available
  16. 1933 Map of Ute Peak, 1959 Print
    1933 Map of Ute Peak, 1959 Print
    1933 Ute Peak
    1959 Print · USGS
    The high mountain country of Grand and Summit Counties is captured here in the early 1930s before modern development altered these drainages. Genealogists and historians can trace the locations of the Ute Park School and Hermosa School or find the remote Leal post office and Horseshoe Ranger Station.
    3 unique versions available
  19. 1934 Map of Climax
    1934 Map of Climax
    1934 Climax
    1934 Print · USGS
    The Colorado high country in the mid-1930s reveals a landscape of industrial mining and high-altitude transport. Trace the routes of the Colorado and Southern RR or locate the historic mining district of Quartzville and the London Mine.
  22. 1934 Map of Minturn
    1934 Map of Minturn
    1934 Minturn
    1934 Print · USGS
    The mountain corridors of Eagle County were defined by mining and the railroad during the early nineteen-thirties. You can trace the industrial landscape of the Eagle River through settlements like Gilman, the remote Bells Camp, and the high-altitude Liberty Mine.
    5 unique versions available
  25. 1934 Map of Dillon
    1934 Map of Dillon
    1934 Dillon
    1934 Print · USGS
    Dillon and the surrounding Blue River Valley are shown here in the mid-1930s before the valley was flooded for reservoir construction. Genealogists and historians can trace the original locations of Dillon, the Dickey Ranger Sta, and mining sites like the Boss Mine.
    3 unique versions available
  28. 1937 Map of Ute Peak
    1937 Map of Ute Peak
    1937 Ute Peak
    1937 Print · USGS
    Grand and Summit counties are captured here in the 1930s, when remote ranger stations and schoolhouses anchored the high timber. Trace the early road and trail networks connecting Ute Park, Leal, and the Slate Creek Ranger Sta.
    3 unique versions available
  31. 1937 Map of Como
    1937 Map of Como
    1937 Como
    1937 Print · USGS
    Park County at the height of the mining era is captured here, centered on the high mountain passes and rail corridors. Genealogists and historians can trace the early footprints of Como, Jefferson, and the high-altitude Ute Mine or the remote Bakers Tank.
    3 unique versions available
  34. 1938 Map of Mt. Lincoln
    1938 Map of Mt. Lincoln
    1938 Mt. Lincoln
    1938 Print · USGS
    Summit and Park counties are captured here in the late 1930s, documenting the high-altitude mining landscape of the Tenmile Range. Researchers can trace the early footprints of Alma, the mining sites at Kokomo and London, and historic routes over Mosquito Pass.
    7 unique versions available
  37. 1940 Map of Mount Powell
    1940 Map of Mount Powell
    1940 Mount Powell
    1940 Print · USGS
    The high peaks of the Gore Range and the Blue River valley are shown here during the late 1930s. Researchers can locate remote homesteads and schools such as Abbet Place, Smith Ranch, and the Hillcrest Sch among the alpine lakes.
    3 unique versions available
  40. 1942 Map of Leadville, 1943 Print
    1942 Map of Leadville, 1943 Print
    1942 Leadville
    1943 Print · USGS
    High in the Rockies during the early war years, this area served as a critical hub for military training and mining operations. Trace the rail lines of the Denver and Rio Grande Western RR and find local landmarks like the U. S. Fish Hatchery or the Adelaide mine.
  43. 1945 Map of Mount Lincoln
    1945 Map of Mount Lincoln
    1945 Mount Lincoln
    1945 Print · USGS
    Breckenridge and the surrounding mining districts were still active industrial hubs when this survey was updated in the mid-1940s. Researchers can trace historic claims and mineral landmarks such as USLM No 16 and the remote high-altitude site of Climax.
    2 unique versions available
  46. 1949 Map of Holy Cross, 1955 Print
    1949 Map of Holy Cross, 1955 Print
    1949 Holy Cross
    1955 Print · USGS
    The Eagle River valley and the high-altitude terrain of the Sawatch Range are captured here just after the war. You can trace the military history of Camp Hale and find old mining claims like the Matchless Mine or the remote Holy Cross City.
    7 unique versions available
  49. 1950 Map of Minturn, 1966 Print
    1950 Map of Minturn, 1966 Print
    1950 Minturn
    1966 Print · USGS
    Mid-century Eagle County was defined by deep canyons and high-altitude industry. Genealogists and historians can trace the railroad corridors of the Denver and Rio Grande Western, the mining operations at Gilman, and the footprint of Camp Hale Military Reservation.
    3 unique versions available
  52. 1951 Map of Holy Cross
    1951 Map of Holy Cross
    1951 Holy Cross
    1951 Print · USGS
    High in the Sawatch Mountains during the post-war era, this region shows a landscape shaped by military training and alpine mining. Researchers can trace the layout of Camp Hale, locate the Homestake Mine, or find the high-altitude Evergreen Cem.
    2 unique versions available
  55. 1953 Map of Denver, 1964 Print
    1953 Map of Denver, 1964 Print
    1953 Denver
    1964 Print · USGS
    Denver and the Colorado Front Range are captured here during a decade of post-war growth and military expansion. Researchers can trace the sprawling rail lines of the Union Pacific, locate the State Capitol, and explore historic mountain mining hubs like Central City.
    6 unique versions available
  58. 1957 Map of Denver
    1957 Map of Denver
    1957 Denver
    1957 Print · USGS
    Denver and the Colorado Front Range are seen here during a mid-century period of intense military and urban expansion. Trace the footprints of the Rocky Mountain Arsenal, the early United States Air Force Academy, and the Lowry AF Base.
  61. 1957 Map of Boreas Pass, 1959 Print
    1957 Map of Boreas Pass, 1959 Print
    1957 Boreas Pass
    1959 Print · USGS
    The high Divide during the late fifties reveals a landscape of transitioning industry and vanished mining camps. You can trace the remnants of high-altitude life at Parkville, the Sally Barber Mine, and the Schattinger Homestead.
    4 unique versions available
  64. 1957 Map of Leadville, 1978 Print
    1957 Map of Leadville, 1978 Print
    1957 Leadville
    1978 Print · USGS
    High-country mining and rail transport define the central Colorado Rockies during the mid-to-late twentieth century. Researchers can trace the industrial footprints of Gilman and Climax, find small rail stops like Malta, and follow the Denver and Rio Grande Western RR.
    2 unique versions available
  67. 1958 Map of Denver
    1958 Map of Denver
    1958 Denver
    1958 Print · USGS
    Denver and the Colorado Front Range are captured here during the mid-century suburban boom. Trace the footprints of military installations like Buckley Air Force Base alongside the established rail networks of the Colorado & Southern Ry.
  70. 1958 Map of Keystone, 1959 Print
    1958 Map of Keystone, 1959 Print
    1958 Keystone
    1959 Print · USGS
    The high country of Summit County in the late fifties is captured here through its mining and water engineering history. Trace the Roberts Tunnel and Public Service Diversion alongside historic sites like Saints John and Keystone.
    8 unique versions available
  73. 1958 Map of Jefferson, 1959 Print
    1958 Map of Jefferson, 1959 Print
    1958 Jefferson
    1959 Print · USGS
    The high alpine ranchlands of Park County come alive in the late 1950s as the high-country ranching era remains in full swing. Genealogists and historians can trace family properties like the Steiner Ranch or find remnants of the Old Railroad Grade and the Liesburg Homestead (Aband).
    7 unique versions available
Showing maps 1-25 of 61

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Frequently asked questions

  • What are the different types of historical maps available for Summit County?
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  • Where are historical maps of Summit County sourced from?