1900s (20th Century) Maps of Mercer County, Ohio
Explore 30 historic maps of Mercer County 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 Mercer County'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 Mercer County's history through authentic maps from the 1900s. This is your window into the past.
Mercer County, OH maps
(30)- 1908 Map of St. Henry, 1944 Print
1908 St. Henry1944 Print · USGSCovers Mercer County, including Coldwater, St. Henry, and other nearby areas - 1909 Map of Loramie, 1961 Print
1909 Loramie1961 Print · USGSCovers Mercer County, including New Bremen, Minster, and other nearby areas - 1911 Map of Loramie, 1936 Print
1911 Loramie1936 Print · USGSCovers Mercer County, including New Bremen, Minster, and other nearby areas - 1911 Map of Spencerville, 1942 Print
1911 Spencerville1942 Print · USGSCovers Mercer County, including Saint Marys, Spencerville, and other nearby areas - 1914 Map of Celina, 1942 Print
1914 Celina1942 Print · USGSCovers Mercer County, including Celina, Rockford, and other nearby areas - 1915 Map of Fort Recovery
1915 Fort Recovery1915 Print · USGSCovers Mercer County, including Portland, Fort Recovery, and other nearby areas2 unique versions available - 1918 Map of Fort Recovery, 1922 Print
1918 Fort Recovery1922 Print · USGSCovers Mercer County, including Portland, Fort Recovery, and other nearby areas - 1944 Map of Loramie
1944 Loramie1944 Print · USGSCovers Mercer County, including New Bremen, Minster, and other nearby areas - 1944 Map of Celina
1944 Celina1944 Print · USGSCovers Mercer County, including Celina, Rockford, and other nearby areas - 1944 Map of Spencerville
1944 Spencerville1944 Print · USGSCovers Mercer County, including Saint Marys, Spencerville, and other nearby areas - 1953 Map of Muncie, 1966 Print
1953 Muncie1966 Print · USGSCovers Mercer County, including Fort Wayne, Fishers, and other nearby areas5 unique versions available - 1956 Map of Muncie
1956 Muncie1956 Print · USGSCovers Mercer County, including Fort Wayne, Fishers, and other nearby areas - 1960 Map of Fort Recovery, 1961 Print
1960 Fort Recovery1961 Print · USGSCovers Mercer County, including Fort Recovery, Noble, and other nearby areas2 unique versions available - 1960 Map of Celina, 1961 Print
1960 Celina1961 Print · USGSCovers Mercer County, including Celina, Harbor Point, and other nearby areas3 unique versions available - 1960 Map of Erastus, 1961 Print
1960 Erastus1961 Print · USGSCovers Mercer County, including Shively, Erastus, and other nearby areas2 unique versions available - 1960 Map of St. Marys, 1961 Print
1960 St. Marys1961 Print · USGSCovers Mercer County, including Saint Marys, Hecht's Landing, and other nearby areas3 unique versions available - 1960 Map of Mendon, 1961 Print
1960 Mendon1961 Print · USGSCovers Mercer County, including Mendon, Tama, and other nearby areas2 unique versions available - 1960 Map of Rockford, 1961 Print
1960 Rockford1961 Print · USGSCovers Mercer County, including Rockford, Bursville, and other nearby areas - 1960 Map of Cosmos, 1961 Print
1960 Cosmos1961 Print · USGSCovers Mercer County, including Salem, Bucks Corner, and other nearby areas4 unique versions available - 1960 Map of Elgin, 1961 Print
1960 Elgin1961 Print · USGSCovers Mercer County, including Elgin, Converse Station, and other nearby areas - 1960 Map of New Corydon, 1962 Print
1960 New Corydon1962 Print · USGSCovers Mercer County, including Trinity, New Corydon, and other nearby areas3 unique versions available - 1960 Map of Willshire, 1964 Print
1960 Willshire1964 Print · USGSCovers Mercer County, including Willshire, Chattanooga, and other nearby areas3 unique versions available - 1961 Map of Rossburg, 1962 Print
1961 Rossburg1962 Print · USGSCovers Mercer County, including Rossburg, New Weston, and other nearby areas2 unique versions available - 1961 Map of Osgood, 1963 Print
1961 Osgood1963 Print · USGSCovers Mercer County, including Fort Loramie, Osgood, and other nearby areas3 unique versions available - 1961 Map of Montezuma, 1963 Print
1961 Montezuma1963 Print · USGSCovers Mercer County, including Coldwater, St. Henry, and other nearby areas3 unique versions available
Showing maps 1-25 of 30
Top cities of Mercer County
- Celina historical maps
- Coldwater historical maps
- St. Henry historical maps
- Fort Recovery historical maps
- Rockford historical maps
- Mendon historical maps
See more
Frequently asked questions
- What are the different types of historical maps available for Mercer County?
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- Are there historical topographic maps available for Mercer County?
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- Where are historical maps of Mercer County sourced from?