1900s (20th Century) Maps of Neptune, Iowa
Explore 6 historic maps of Neptune 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 Neptune'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 Neptune's history through authentic maps from the 1900s. This is your window into the past.
Neptune, IA maps
(6)- 1955 Map of Sioux City, 1959 Print
1955 Sioux City1959 Print · USGSThe Missouri River valley in the mid-fifties is captured here during a time of major engineering and social transition. Genealogists and historians can trace the foundations of Gavins Point Dam, tribal boundaries on the Santee Sioux Indian Reservation, and local landmarks like the Norfolk State Hospital.4 unique versions available - 1958 Map of Sioux City
1958 Sioux City1958 Print · USGSThe Missouri River valley in the late fifties was a bustling intersection of tribal lands, rail corridors, and river towns. Genealogists can trace family roots through specific rural sites like Daisy Valley School, St Johns Church and School, and Yankton State Hospital. - 1959 Map of Sioux City
1959 Sioux City1959 Print · USGSThe tri-state region surrounding the Missouri River is captured here in the late fifties, showing the convergence of Nebraska, South Dakota, and Iowa. Researchers can trace rural lineages through numerous country schoolhouses like Cemetery School and the many numbered Washington School districts. - 1962 Map of Union Center, 1964 Print
1962 Union Center1964 Print · USGSThe agricultural heartland of Plymouth and Woodbury Counties is documented here in the early sixties, showing a landscape defined by rail lines and section roads. Researchers can locate family landmarks like St Josephs Cem, the small settlement of Neptune, and the path of the Illinois Central Railroad through Merrill. - 1985 Map of Union Center NW, 1986 Print
1985 Union Center NW1986 Print · USGSMid-century rail commerce and river geography define this Iowa landscape in the 1980s, where three major lines converge. Genealogists and historians can trace local roots at Trinity Ch, Stanton Cem, and the small settlement of Neptune. - 1986 Map of Sioux City North
1986 Sioux City North1986 Print · USGSThe tri-state borderlands of Iowa, South Dakota, and Nebraska are captured here in the mid-eighties as the region's agricultural and academic centers thrived. Researchers can trace historic rail lines like the Illinois Central Gulf and locate landmarks from Briar Cliff College to the heights of Spirit Mound.2 unique versions available
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