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Old Maps of Duncan, Iowa

Explore 10 old maps of Duncan, spanning from 1954 to today. These high-resolution historic maps reveal how streets, neighborhoods, landmarks, and natural features evolved over time — perfect for genealogy, metal detecting, research, and local history exploration.

What you can do with these maps:

  • See how Duncan changed over time: Compare historical maps to modern-day views to trace roads, homesites, rail lines & more.
  • View detailed metadata: Each map includes creators, publishers, year, scale, and archive source.
  • Overlay maps with satellite & LiDAR: Visualize the past alongside modern tools to explore terrain & human change.
  • Trusted historical sources: Maps sourced from the USGS, Library of Congress, and other archives.
  • Access maps your way: View online, download high-res files, or order prints for personal or research use.

Start exploring old maps of Duncan to uncover forgotten places, hidden landmarks, and the deep history beneath your feet.

Duncan, IA maps

(10)
  1. 1954 Map of Mason City, 1967 Print
    1954 Map of Mason City, 1967 Print
    1954 Mason City
    1967 Print · USGS
    Southern Minnesota and northern Iowa are shown here at the height of the mid-century rail era, centered on the regional hubs of Mason City and Rochester. Researchers can trace the vanished paths of the Chicago Great Western and find local landmarks like Pilot Knob and Bear Lake.
    2 unique versions available
  4. 1957 Map of Mason City
    1957 Map of Mason City
    1957 Mason City
    1957 Print · USGS
    The Minnesota-Iowa border region comes alive in this mid-century survey, from the industrial plants of Mason City to the medical hub of Rochester. Researchers can trace the rail-and-river economy through the Chicago Great Western Railway and the Shell Rock River.
  7. 1958 Map of Mason City
    1958 Map of Mason City
    1958 Mason City
    1958 Print · USGS
    Southern Minnesota and northern Iowa are shown during the mid-fifties when railroads still anchored the regional economy. Genealogists and historians can trace the intricate rail networks of the Illinois Central and find local landmarks in Mason City, Albert Lea, and Austin.
  10. 1972 Map of Duncan, 1975 Print
    1972 Map of Duncan, 1975 Print
    1972 Duncan
    1975 Print · USGS
    Hancock County farmland is shown here in the early 1970s, organized by the townships of Garfield and Liberty. You can trace the railroad through Duncan, locate family sites at St Boniface Cem, or explore the wetlands of Eagle Lake.
  13. 1985 Map of Mason City
    1985 Map of Mason City
    1985 Mason City
    1985 Print · USGS
    The Northern Iowa and Southern Minnesota borderlands are captured here in the mid-eighties, showing a region defined by agricultural drainage and rail heritage. Genealogists and historians can trace the grid of rural townships and find local landmarks like Pilot Knob State Park, Nora Springs, and Clear Lake State Park.
    2 unique versions available
  16. 2010 Map of Duncan, 2010 Print
    2010 Map of Duncan, 2010 Print
    2010 Duncan
    2010 Print · USGS
    Covers Duncan, including Hancock County, United States, and other nearby areas
  19. 2013 Map of Duncan, 2013 Print
    2013 Map of Duncan, 2013 Print
    2013 Duncan
    2013 Print · USGS
    Covers Duncan, including Hancock County, United States, and other nearby areas
  22. 2015 Map of Duncan, 2015 Print
    2015 Map of Duncan, 2015 Print
    2015 Duncan
    2015 Print · USGS
    Covers Duncan, including Hancock County, United States, and other nearby areas
  25. 2018 Map of Duncan, 2018 Print
    2018 Map of Duncan, 2018 Print
    2018 Duncan
    2018 Print · USGS
    Covers Duncan, including Hancock County, United States, and other nearby areas
  28. 2022 Map of Duncan, 2022 Print
    2022 Map of Duncan, 2022 Print
    2022 Duncan
    2022 Print · USGS
    Hancock County farmland and the Iowa River headwaters are captured in this recent survey. Genealogists can locate family sites at Saint John Cem, Saint Boniface Cem, and Liberty Cem, or trace the course of the W Br Iowa River.
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