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Old Maps of Allen County, Ohio for Metal Detecting

Plan your next treasure hunt with 30 historic maps of Allen 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 Allen County.

Allen County, OH maps

(30)
  1. 1906 Map of Lima, 1943 Print
    1906 Map of Lima, 1943 Print
    1906 Lima
    1943 Print · USGS
    Covers Allen County, including Lima, Wapakoneta, and other nearby areas
    2 unique versions available
  4. 1906 Map of Columbus Grove, 1956 Print
    1906 Map of Columbus Grove, 1956 Print
    1906 Columbus Grove
    1956 Print · USGS
    Covers Allen County, including Lima, Ottawa, and other nearby areas
  7. 1907 Map of Bluffton
    1907 Map of Bluffton
    1907 Bluffton
    1907 Print · USGS
    Covers Allen County, including Ada, Bluffton, and other nearby areas
    3 unique versions available
  10. 1908 Map of Columbus Grove, 1932 Print
    1908 Map of Columbus Grove, 1932 Print
    1908 Columbus Grove
    1932 Print · USGS
    Covers Allen County, including Lima, Ottawa, and other nearby areas
  13. 1911 Map of Spencerville, 1942 Print
    1911 Map of Spencerville, 1942 Print
    1911 Spencerville
    1942 Print · USGS
    Covers Allen County, including Saint Marys, Spencerville, and other nearby areas
  16. 1911 Map of Delphos, 1942 Print
    1911 Map of Delphos, 1942 Print
    1911 Delphos
    1942 Print · USGS
    Covers Allen County, including Delphos, Ottoville, and other nearby areas
  19. 1913 Map of Alger
    1913 Map of Alger
    1913 Alger
    1913 Print · USGS
    Covers Allen County, including Alger, Waynesfield, and other nearby areas
    2 unique versions available
  22. 1915 Map of Alger
    1915 Map of Alger
    1915 Alger
    1915 Print · USGS
    Covers Allen County, including Alger, Waynesfield, and other nearby areas
    4 unique versions available
  25. 1943 Map of Alger
    1943 Map of Alger
    1943 Alger
    1943 Print · USGS
    Covers Allen County, including Alger, Waynesfield, and other nearby areas
  28. 1944 Map of Delphos
    1944 Map of Delphos
    1944 Delphos
    1944 Print · USGS
    Covers Allen County, including Delphos, Ottoville, and other nearby areas
  31. 1944 Map of Spencerville
    1944 Map of Spencerville
    1944 Spencerville
    1944 Print · USGS
    Covers Allen County, including Saint Marys, Spencerville, and other nearby areas
  34. 1950 Map of Marion
    1950 Map of Marion
    1950 Marion
    1950 Print · USGS
    Covers Allen County, including Columbus, Newark, and other nearby areas
  37. 1953 Map of Muncie, 1966 Print
    1953 Map of Muncie, 1966 Print
    1953 Muncie
    1966 Print · USGS
    Covers Allen County, including Fort Wayne, Fishers, and other nearby areas
    5 unique versions available
  40. 1956 Map of Muncie
    1956 Map of Muncie
    1956 Muncie
    1956 Print · USGS
    Covers Allen County, including Fort Wayne, Fishers, and other nearby areas
  43. 1960 Map of Columbus Grove, 1961 Print
    1960 Map of Columbus Grove, 1961 Print
    1960 Columbus Grove
    1961 Print · USGS
    Covers Allen County, including Ottawa, Columbus Grove, and other nearby areas
    2 unique versions available
  46. 1960 Map of Bluffton, 1961 Print
    1960 Map of Bluffton, 1961 Print
    1960 Bluffton
    1961 Print · USGS
    Covers Allen County, including Bluffton, Pandora, and other nearby areas
    4 unique versions available
  49. 1960 Map of Delphos, 1961 Print
    1960 Map of Delphos, 1961 Print
    1960 Delphos
    1961 Print · USGS
    Covers Allen County, including Delphos, Scotts Crossing, and other nearby areas
    3 unique versions available
  52. 1960 Map of Cairo, 1961 Print
    1960 Map of Cairo, 1961 Print
    1960 Cairo
    1961 Print · USGS
    Covers Allen County, including Lima, Cairo, and other nearby areas
    4 unique versions available
  55. 1960 Map of Spencerville, 1961 Print
    1960 Map of Spencerville, 1961 Print
    1960 Spencerville
    1961 Print · USGS
    Covers Allen County, including Spencerville, Buckland, and other nearby areas
    3 unique versions available
  58. 1960 Map of Middle Point, 1961 Print
    1960 Map of Middle Point, 1961 Print
    1960 Middle Point
    1961 Print · USGS
    Covers Allen County, including Middle Point, Venedocia, and other nearby areas
    3 unique versions available
  61. 1960 Map of Elgin, 1961 Print
    1960 Map of Elgin, 1961 Print
    1960 Elgin
    1961 Print · USGS
    Covers Allen County, including Elgin, Converse Station, and other nearby areas
  64. 1960 Map of Elida, 1961 Print
    1960 Map of Elida, 1961 Print
    1960 Elida
    1961 Print · USGS
    Covers Allen County, including Lima, Elida, and other nearby areas
    3 unique versions available
  67. 1961 Map of Lima, 1962 Print
    1961 Map of Lima, 1962 Print
    1961 Lima
    1962 Print · USGS
    Covers Allen County, including Lima, Fort Shawnee, and other nearby areas
    4 unique versions available
  70. 1961 Map of Beaverdam, 1963 Print
    1961 Map of Beaverdam, 1963 Print
    1961 Beaverdam
    1963 Print · USGS
    Covers Allen County, including Beaverdam, Lafayette, and other nearby areas
    3 unique versions available
  73. 1961 Map of Harrod, 1963 Print
    1961 Map of Harrod, 1963 Print
    1961 Harrod
    1963 Print · USGS
    Covers Allen County, including Harrod, Maysville, and other nearby areas
    2 unique versions available
Showing maps 1-25 of 30

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Frequently asked questions

  • What are the different types of historical maps available for Allen County?
  • What is the oldest map of Allen County?
  • Where can I purchase historical maps of Allen County for my home or office?
  • Where can I download high-res historical maps of Allen County?
  • Are there historical topographic maps available for Allen County?
  • Is there historical aerial imagery available for Allen County?
  • Where are historical maps of Allen County sourced from?

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