1900s (20th Century) Maps of Duncan, Iowa
Explore 5 historic maps of Duncan 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 Duncan'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 Duncan's history through authentic maps from the 1900s. This is your window into the past.
Duncan, IA maps
(5)- 1954 Map of Mason City, 1967 Print
1954 Mason City1967 Print · USGSCovers Duncan, including Rochester, Mason City, and other nearby areas2 unique versions available - 1957 Map of Mason City
1957 Mason City1957 Print · USGSCovers Duncan, including Rochester, Mason City, and other nearby areas - 1958 Map of Mason City
1958 Mason City1958 Print · USGSCovers Duncan, including Rochester, Mason City, and other nearby areas - 1972 Map of Duncan, 1975 Print
1972 Duncan1975 Print · USGSCovers Duncan, including Hancock County, United States, and other nearby areas - 1985 Map of Mason City
1985 Mason City1985 Print · USGSCovers Duncan, including Mason City, Clear Lake, and other nearby areas2 unique versions available
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Showing maps 1-5 of 5
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Frequently asked questions
- What are the different types of historical maps available for Duncan?
- What is the oldest map of Duncan?
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- Where can I download high-res historical maps of Duncan?
- Are there historical topographic maps available for Duncan?
- Is there historical aerial imagery available for Duncan?
- Where are historical maps of Duncan sourced from?