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Old Maps of Plymouth County, Iowa for Metal Detecting

Plan your next treasure hunt with 185 historic maps of Plymouth County. Find old homesites, ghost towns, trails, and gathering spots that may be lost to time — perfect for identifying promising metal detecting locations.

  • Locate forgotten sites: Uncover places like long-lost settlements, abandoned rail lines, or gathering spots.
  • Plan better hunts: Use map overlays combined with LiDAR or satellite views to narrow in on historically rich areas.
  • Made for detectorists: Thousands of hobbyists use these maps to discover relics, coins, and hidden history.

Use these historic maps to boost your research and find new opportunities beneath the surface of Plymouth County.

Plymouth County, IA maps

(185)
  1. 1898 Map of Elk Point, 1960 Print
    1898 Map of Elk Point, 1960 Print
    1898 Elk Point
    1960 Print · USGS
    The tri-state borderlands of South Dakota, Nebraska, and Iowa are captured here in the late nineteenth century as a landscape of ferries and river-fed commerce. Researchers can trace the early foundations of Elk Point and Vermillion or locate vanished crossings like Ionia Ferry and the Ponca Ferry.
    2 unique versions available
  4. 1901 Map of Elk Point
    1901 Map of Elk Point
    1901 Elk Point
    1901 Print · USGS
    The tri-state borderlands of South Dakota, Nebraska, and Iowa are captured here at the turn of the century during the peak of the steam rail era. Researchers can trace the original paths of the Chicago Milwaukee and St. Paul Ry. and locate early settlements like Spirit Mound, Newcastle, and Burbank.
  7. 1907 Map of Elk Point
    1907 Map of Elk Point
    1907 Elk Point
    1907 Print · USGS
    The tri-state borderlands of South Dakota, Nebraska, and Iowa are shown here at the start of the century, centered on the Missouri and Big Sioux river valleys. Researchers can trace the river's old path through oxbows like Mc Cook Lake and locate early river crossings including Vermilion Ferry and Ponca Ferry.
    6 unique versions available
  10. 1954 Map of Fort Dodge, 1968 Print
    1954 Map of Fort Dodge, 1968 Print
    1954 Fort Dodge
    1968 Print · USGS
    Northwest Iowa is shown here during a period of steady industrial and rail activity in the mid-fifties. Researchers can trace the extensive rail lines connecting Fort Dodge to mining and manufacturing sites like Gypsum and Industry Station.
    3 unique versions available
  13. 1955 Map of Sioux City, 1959 Print
    1955 Map of Sioux City, 1959 Print
    1955 Sioux City
    1959 Print · USGS
    The 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
  16. 1957 Map of Fort Dodge
    1957 Map of Fort Dodge
    1957 Fort Dodge
    1957 Print · USGS
    West-central Iowa thrived as a network of rail-linked agricultural hubs and river towns during the mid-fifties. Researchers can trace the development of the Des Moines River valley and locate historic landmarks in Fort Dodge, Storm Lake, and Lehigh.
  19. 1958 Map of Sioux City
    1958 Map of Sioux City
    1958 Sioux City
    1958 Print · USGS
    The 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.
  22. 1958 Map of Fort Dodge
    1958 Map of Fort Dodge
    1958 Fort Dodge
    1958 Print · USGS
    Western Iowa in the mid-1950s reveals a productive landscape of river-valley industry and prairie agricultural hubs. Researchers can trace the development of the Des Moines River corridor through Fort Dodge and locate vanished local landmarks near Coalville or Storm Lake.
  25. 1959 Map of Sioux City
    1959 Map of Sioux City
    1959 Sioux City
    1959 Print · USGS
    The 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.
  28. 1962 Map of Le Mars, 1964 Print
    1962 Map of Le Mars, 1964 Print
    1962 Le Mars
    1964 Print · USGS
    Northwestern Iowa's agricultural heartland is documented here in the early sixties, centered on the growing community of Le Mars. Researchers can trace old rail corridors like the ILLINOIS CENTRAL, locate family plots at Resthaven Cemetery, or find historical landmarks like Westmar College.
  31. 1962 Map of Union Center, 1964 Print
    1962 Map of Union Center, 1964 Print
    1962 Union Center
    1964 Print · USGS
    The 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.
  34. 1963 Map of Elk Point, 1964 Print
    1963 Map of Elk Point, 1964 Print
    1963 Elk Point
    1964 Print · USGS
    The tri-state borderlands of South Dakota, Nebraska, and Iowa are captured in the early sixties as the modern interstate began to parallel the historic Milwaukee Road. Researchers can locate numerous country schoolhouses like Woodland Sch and Pleasant View Sch or trace the family plots at St Joseph Cem.
    3 unique versions available
  37. 1963 Map of Sioux City North, 1964 Print
    1963 Map of Sioux City North, 1964 Print
    1963 Sioux City North
    1964 Print · USGS
    The northern reaches of Sioux City and Riverside are captured in the early sixties as urban development meets the rugged Loess Hills. Researchers can find precise locations for Briar Cliff College, Logan Park Cemetery, and the old Soos Speedway.
    3 unique versions available
  40. 1963 Map of Elk Point NE, 1964 Print
    1963 Map of Elk Point NE, 1964 Print
    1963 Elk Point NE
    1964 Print · USGS
    The Big Sioux River borderlands between Iowa and South Dakota are shown here in the early sixties, as the river meanders through the Elk Point area. Genealogists can trace local landmarks like Fieldview Sch, Horseshoe Lake, and the winding Broken Kettle Creek.
    2 unique versions available
  43. 1963 Map of Jefferson, 1964 Print
    1963 Map of Jefferson, 1964 Print
    1963 Jefferson
    1964 Print · USGS
    The borderlands of South Dakota, Iowa, and Nebraska are captured in the early sixties as the interstate system arrived. Genealogists can trace family footprints at Civil Bend Cem, Montagne Sch, and the old rail line of the Milwaukee Road.
    4 unique versions available
  46. 1964 Map of James, 1965 Print
    1964 Map of James, 1965 Print
    1964 James
    1965 Print · USGS
    The Floyd River valley north of Sioux City shows a landscape of rail-driven transit and suburban growth in the early sixties. Genealogists and local historians can trace the rural roots of Hungerford through Hungerford Cem and the Grant Sch.
    3 unique versions available
  49. 1964 Map of Hinton, 1965 Print
    1964 Map of Hinton, 1965 Print
    1964 Hinton
    1965 Print · USGS
    Plymouth County in the mid-sixties reveals a busy agricultural landscape at the junction of the Floyd River and major railroads. Local historians can trace the foundations of Merrill and Hinton alongside rural landmarks like Liberty Sch and Melbourne Ch.
  52. 1964 Map of Millnerville, 1966 Print
    1964 Map of Millnerville, 1966 Print
    1964 Millnerville
    1966 Print · USGS
    Plymouth County farmland and the loess hill terrain are captured here in the mid-1960s before modern consolidation. Family historians can locate rural landmarks like Liberty Cem, the Pleasant Valley Cem, and the small settlement of Adaville.
  55. 1969 Map of Pierson, 1971 Print
    1969 Map of Pierson, 1971 Print
    1969 Pierson
    1971 Print · USGS
    The rural landscape of Woodbury and Plymouth counties is captured here in the late sixties, centered on the village of Pierson. Researchers can trace the path of the Illinois Central Railroad Grade or locate early community centers like Grand Meadow Sch and Meadow Star Ch.
  58. 1969 Map of Fielding, 1971 Print
    1969 Map of Fielding, 1971 Print
    1969 Fielding
    1971 Print · USGS
    Cherokee and Plymouth counties are captured here in the late sixties, showing a landscape defined by the winding Little Sioux River. Genealogists and local historians can locate the Fielding settlement and rural landmarks like Mt Pleasant Ch and Trinity Cem.
  61. 1969 Map of Chatsworth, 1971 Print
    1969 Map of Chatsworth, 1971 Print
    1969 Chatsworth
    1971 Print · USGS
    The Big Sioux River valley comes alive in the late sixties as it winds along the South Dakota and Iowa border. Trace the old Milwaukee Road rail line through Chatsworth and locate local landmarks like Union Creek Ch or Old Big Springs Cem.
  64. 1969 Map of Granville West, 1971 Print
    1969 Map of Granville West, 1971 Print
    1969 Granville West
    1971 Print · USGS
    Northwest Iowa's agricultural landscape is captured here in the late sixties as the township system matured. Researchers can trace the path of the Chicago and North Western railroad near Granville or follow the banks of Willow Creek and Deep Creek.
  67. 1969 Map of Richland, 1971 Print
    1969 Map of Richland, 1971 Print
    1969 Richland
    1971 Print · USGS
    Union County near the Nebraska and Iowa borders shows a landscape of prairie agriculture and river valley life in the late sixties. Family historians can locate specific rural landmarks including Old Brule Creek Cem, St Paul Ch, and Lamont Sch.
  70. 1969 Map of Marcus, 1971 Print
    1969 Map of Marcus, 1971 Print
    1969 Marcus
    1971 Print · USGS
    Marcus and the surrounding Northwest Iowa townships are shown here in the late sixties at a peak of agricultural development. Genealogists can trace family footprints at Holy Name Cem and Trinity Ch or follow the Illinois Central rail line.
  73. 1969 Map of Granville East, 1971 Print
    1969 Map of Granville East, 1971 Print
    1969 Granville East
    1971 Print · USGS
    Northwest Iowa's farm country comes into focus in the late sixties, where rail lines and section roads define the prairie. Genealogists and local historians can trace family ties at St Josephs Cem or locate the village of Germantown near Whiskey Creek.
Showing maps 1-25 of 185

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