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Old Maps of Mercer County, Ohio for Metal Detecting

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

Mercer County, OH maps

(30)
  1. 1908 Map of St. Henry, 1944 Print
    1908 Map of St. Henry, 1944 Print
    1908 St. Henry
    1944 Print · USGS
    Covers Mercer County, including Coldwater, St. Henry, and other nearby areas
  4. 1909 Map of Loramie, 1961 Print
    1909 Map of Loramie, 1961 Print
    1909 Loramie
    1961 Print · USGS
    Covers Mercer County, including New Bremen, Minster, and other nearby areas
  7. 1911 Map of Loramie, 1936 Print
    1911 Map of Loramie, 1936 Print
    1911 Loramie
    1936 Print · USGS
    Covers Mercer County, including New Bremen, Minster, and other nearby areas
  10. 1911 Map of Spencerville, 1942 Print
    1911 Map of Spencerville, 1942 Print
    1911 Spencerville
    1942 Print · USGS
    Covers Mercer County, including Saint Marys, Spencerville, and other nearby areas
  13. 1914 Map of Celina, 1942 Print
    1914 Map of Celina, 1942 Print
    1914 Celina
    1942 Print · USGS
    Covers Mercer County, including Celina, Rockford, and other nearby areas
  16. 1915 Map of Fort Recovery
    1915 Map of Fort Recovery
    1915 Fort Recovery
    1915 Print · USGS
    Covers Mercer County, including Portland, Fort Recovery, and other nearby areas
    2 unique versions available
  19. 1918 Map of Fort Recovery, 1922 Print
    1918 Map of Fort Recovery, 1922 Print
    1918 Fort Recovery
    1922 Print · USGS
    Covers Mercer County, including Portland, Fort Recovery, and other nearby areas
  22. 1944 Map of Loramie
    1944 Map of Loramie
    1944 Loramie
    1944 Print · USGS
    Covers Mercer County, including New Bremen, Minster, and other nearby areas
  25. 1944 Map of Celina
    1944 Map of Celina
    1944 Celina
    1944 Print · USGS
    Covers Mercer County, including Celina, Rockford, and other nearby areas
  28. 1944 Map of Spencerville
    1944 Map of Spencerville
    1944 Spencerville
    1944 Print · USGS
    Covers Mercer County, including Saint Marys, Spencerville, and other nearby areas
  31. 1953 Map of Muncie, 1966 Print
    1953 Map of Muncie, 1966 Print
    1953 Muncie
    1966 Print · USGS
    Covers Mercer County, including Fort Wayne, Fishers, and other nearby areas
    5 unique versions available
  34. 1956 Map of Muncie
    1956 Map of Muncie
    1956 Muncie
    1956 Print · USGS
    Covers Mercer County, including Fort Wayne, Fishers, and other nearby areas
  37. 1960 Map of Fort Recovery, 1961 Print
    1960 Map of Fort Recovery, 1961 Print
    1960 Fort Recovery
    1961 Print · USGS
    Covers Mercer County, including Fort Recovery, Noble, and other nearby areas
    2 unique versions available
  40. 1960 Map of Celina, 1961 Print
    1960 Map of Celina, 1961 Print
    1960 Celina
    1961 Print · USGS
    Covers Mercer County, including Celina, Harbor Point, and other nearby areas
    3 unique versions available
  43. 1960 Map of Erastus, 1961 Print
    1960 Map of Erastus, 1961 Print
    1960 Erastus
    1961 Print · USGS
    Covers Mercer County, including Shively, Erastus, and other nearby areas
    2 unique versions available
  46. 1960 Map of St. Marys, 1961 Print
    1960 Map of St. Marys, 1961 Print
    1960 St. Marys
    1961 Print · USGS
    Covers Mercer County, including Saint Marys, Hecht's Landing, and other nearby areas
    3 unique versions available
  49. 1960 Map of Mendon, 1961 Print
    1960 Map of Mendon, 1961 Print
    1960 Mendon
    1961 Print · USGS
    Covers Mercer County, including Mendon, Tama, and other nearby areas
    2 unique versions available
  52. 1960 Map of Rockford, 1961 Print
    1960 Map of Rockford, 1961 Print
    1960 Rockford
    1961 Print · USGS
    Covers Mercer County, including Rockford, Bursville, and other nearby areas
  55. 1960 Map of Cosmos, 1961 Print
    1960 Map of Cosmos, 1961 Print
    1960 Cosmos
    1961 Print · USGS
    Covers Mercer County, including Salem, Bucks Corner, and other nearby areas
    4 unique versions available
  58. 1960 Map of Elgin, 1961 Print
    1960 Map of Elgin, 1961 Print
    1960 Elgin
    1961 Print · USGS
    Covers Mercer County, including Elgin, Converse Station, and other nearby areas
  61. 1960 Map of New Corydon, 1962 Print
    1960 Map of New Corydon, 1962 Print
    1960 New Corydon
    1962 Print · USGS
    Covers Mercer County, including Trinity, New Corydon, and other nearby areas
    3 unique versions available
  64. 1960 Map of Willshire, 1964 Print
    1960 Map of Willshire, 1964 Print
    1960 Willshire
    1964 Print · USGS
    Covers Mercer County, including Willshire, Chattanooga, and other nearby areas
    3 unique versions available
  67. 1961 Map of Rossburg, 1962 Print
    1961 Map of Rossburg, 1962 Print
    1961 Rossburg
    1962 Print · USGS
    Covers Mercer County, including Rossburg, New Weston, and other nearby areas
    2 unique versions available
  70. 1961 Map of Osgood, 1963 Print
    1961 Map of Osgood, 1963 Print
    1961 Osgood
    1963 Print · USGS
    Covers Mercer County, including Fort Loramie, Osgood, and other nearby areas
    3 unique versions available
  73. 1961 Map of Montezuma, 1963 Print
    1961 Map of Montezuma, 1963 Print
    1961 Montezuma
    1963 Print · USGS
    Covers Mercer County, including Coldwater, St. Henry, and other nearby areas
    3 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 Mercer County?
  • What is the oldest map of Mercer County?
  • Where can I purchase historical maps of Mercer County for my home or office?
  • Where can I download high-res historical maps of Mercer County?
  • Are there historical topographic maps available for Mercer County?
  • Is there historical aerial imagery available for Mercer County?
  • Where are historical maps of Mercer County sourced from?

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