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1900s (20th Century) Maps of Ontario, Oregon

Explore 8 historic maps of Ontario 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 Ontario'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 Ontario's history through authentic maps from the 1900s. This is your window into the past.

Ontario, OR maps

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  1. 1951 Map of Malheur Butte, 1952 Print
    1951 Map of Malheur Butte, 1952 Print
    1951 Malheur Butte
    1952 Print · USGS
    Eastern Oregon agriculture and infrastructure are captured here in the early fifties as irrigation transformed the high desert. Researchers can trace the development of rural social life and utility networks near Malheur Butte and the Ontario Heights Grange.
    4 unique versions available
  4. 1951 Map of Moores Hollow, 1953 Print
    1951 Map of Moores Hollow, 1953 Print
    1951 Moores Hollow
    1953 Print · USGS
    The Oregon-Idaho borderlands thrive on river-fed irrigation and rail transport in the early fifties. Genealogists can trace family footprints near Annex and Ontario Heights or locate the historic path of the Oregon Trail as it nears the Snake River.
    3 unique versions available
  7. 1951 Map of Payette, 1953 Print
    1951 Map of Payette, 1953 Print
    1951 Payette
    1953 Print · USGS
    The Snake River valley in the early fifties is captured here at the busy intersection of the Pacific Northwest's rail and river networks. Researchers can trace the Old Oregon Trail Highway or locate local landmarks like the Orchard Ave Grange Hall and Riverside Cemetery.
    3 unique versions available
  10. 1955 Map of Baker, 1964 Print
    1955 Map of Baker, 1964 Print
    1955 Baker
    1964 Print · USGS
    The Oregon-Idaho borderlands are captured here in the mid-fifties as the Snake River underwent massive changes from dam construction. Trace the Oregon Trail Memorial Monument near Baker, find early mines like Virtue Mine, and follow the Union Pacific Railroad through Huntington.
    4 unique versions available
  13. 1959 Map of Baker
    1959 Map of Baker
    1959 Baker
    1959 Print · USGS
    The Oregon and Idaho borderlands come alive in the late fifties, showing the rugged corridor along the Snake River and the high peaks of the Wallowa Mountains. Researchers can trace the legacy of the Union Pacific railroad or locate historic mining sites like the Flagstaff Mine and Virtue Mine.
    2 unique versions available
  16. 1974 Map of Payette, 1975 Print
    1974 Map of Payette, 1975 Print
    1974 Payette
    1975 Print · USGS
    The Idaho-Oregon border comes into focus in the mid-seventies, centered on the strategic river junction of the Snake and Payette. Genealogists and researchers can trace the detailed street grids and early industrial footprints of Payette, Ontario, and Fruitland as they appeared decades ago.
  19. 1980 Map of Weiser, 1993 Print
    1980 Map of Weiser, 1993 Print
    1980 Weiser
    1993 Print · USGS
    The Snake River valley and the foothills of the Boise Mountains are captured here in the 1980s, showing the vital rail and water infrastructure of the region. Researchers can trace the Union Pacific line through Payette or locate rural landmarks like Hog Cove Butte and Wilburn Butte.
  22. 1980 Map of Brogan, 1997 Print
    1980 Map of Brogan, 1997 Print
    1980 Brogan
    1997 Print · USGS
    The Oregon-Idaho borderlands come alive in this late-century survey of the high desert and river valleys. Researchers can trace the legacy of ranching and transport through sites like Malheur City, the Union Pacific rail lines, and the Snake River crossings.
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Frequently asked questions

  • What are the different types of historical maps available for Ontario?
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  • Are there historical topographic maps available for Ontario?
  • Is there historical aerial imagery available for Ontario?
  • Where are historical maps of Ontario sourced from?