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1900s (20th Century) Maps of Union Township, Iowa

Explore 10 historic maps of Union Township 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 Union Township'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 Union Township's history through authentic maps from the 1900s. This is your window into the past.

Union Township, IA maps

(10)
  1. 1909 Map of Knoxville, 1958 Print
    1909 Map of Knoxville, 1958 Print
    1909 Knoxville
    1958 Print · USGS
    Marion County at the start of the twentieth century is a landscape defined by its river valleys and dense network of country schools. Genealogists and historians can trace family roots through dozens of named landmarks like Stringtown School, Mt Vernon Church, and the river town of Red Rock.
  4. 1912 Map of Knoxville
    1912 Map of Knoxville
    1912 Knoxville
    1912 Print · USGS
    Marion County at the dawn of the twentieth century was a landscape of bustling rail towns and river crossings. Genealogists can trace the exact locations of dozens of rural schoolhouses and churches like Stringtown School and Mt Vernon Church alongside the Des Moines River.
    2 unique versions available
  7. 1954 Map of Des Moines, 1973 Print
    1954 Map of Des Moines, 1973 Print
    1954 Des Moines
    1973 Print · USGS
    Central Iowa's evolving landscape is captured here in the early seventies, just as major reservoirs were reshaping the river valleys. Genealogists and historians can trace the rail corridors of the Burlington Northern or locate family roots near Pella, Indianola, and Knoxville.
    2 unique versions available
  10. 1956 Map of Des Moines
    1956 Map of Des Moines
    1956 Des Moines
    1956 Print · USGS
    Central Iowa in the mid-fifties shows a landscape defined by bustling rail hubs and deep-rooted agricultural research. Genealogists and researchers can trace the growth of Des Moines and Ames, locate the Sac and Fox Indian Reservation, or study the paths of the Skunk River and South Skunk River.
  13. 1957 Map of Des Moines
    1957 Map of Des Moines
    1957 Des Moines
    1957 Print · USGS
    Central Iowa's post-war landscape is defined here by the converging rail lines and river valleys that shaped its earliest settlements. Genealogists and historians can trace the paths of the Rock Island Railroad and locate community landmarks in Des Moines, Ames, and Newton.
  16. 1965 Map of Knoxville NW, 1966 Print
    1965 Map of Knoxville NW, 1966 Print
    1965 Knoxville NW
    1966 Print · USGS
    The Des Moines River valley in Marion County is captured here just as the landscape was being reshaped by the reservoir. Genealogists and local historians can locate several burial sites, including Dunreath Cem and Rees Cem, alongside an Old Railroad Grade and numerous creek beds.
  19. 1965 Map of Otley, 1966 Print
    1965 Map of Otley, 1966 Print
    1965 Otley
    1966 Print · USGS
    Marion County underwent a massive transformation in the mid-sixties as the Des Moines River valley prepared for the rising waters of Red Rock Lake. Researchers can trace the original landscape through family cemeteries like Ruckman Cem and the small settlement of Teter.
    2 unique versions available
  22. 1965 Map of Knoxville SW, 1966 Print
    1965 Map of Knoxville SW, 1966 Print
    1965 Knoxville SW
    1966 Print · USGS
    Marion County comes into focus in the mid-sixties as the newly formed waters of Lake Red Rock reshape the landscape. Researchers can trace the legacy of early settlers and miners at Lincoln Cem, the village of Donnelley, and several local Strip Mines.
  25. 1969 Map of Des Moines
    1969 Map of Des Moines
    1969 Des Moines
    1969 Print · USGS
    Central Iowa's fertile plains and growing capital are captured here during the late sixties, a time of major highway expansion and reservoir construction. Genealogists and researchers can trace rural township boundaries, local cemeteries, and rail lines serving towns like Pella, Grinnell, and Oskaloosa.
  28. 1984 Map of Indianola
    1984 Map of Indianola
    1984 Indianola
    1984 Print · USGS
    South-central Iowa in the mid-1980s reveals a patchwork of established rail hubs and significant new conservation areas. Trace the Chicago and North Western rail lines and explore rural landmarks like Lake Ahquabi State Park or the Strip Mine near Knoxville.
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