Flat Rock, Ohio

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Flat Rock
census-designated place
Flat Rock is located in Ohio
Flat Rock
Flat Rock
Location within the state of Ohio
Coordinates: 41°14′09″N 82°51′37″W / 41.23583°N 82.86028°W / 41.23583; -82.86028Coordinates: 41°14′09″N 82°51′37″W / 41.23583°N 82.86028°W / 41.23583; -82.86028
Country United States
State Ohio
County Seneca
Township Thompson
Time zone Eastern (EST) (UTC-5)
 • Summer (DST) EDT (UTC-4)
ZIP codes 44828

Flat Rock is a census-designated place in northeastern Thompson Township, Seneca County, Ohio, United States.[1] Although it is unincorporated, it has a post office, with the ZIP code of 44828.[2]


Flat Rock was originally called Lewisville, and under the latter name was platted in 1841.[3] A post office called Flat Rock has been in operation since 1846.[4] The present name comes from a flat layer of rock covering an artesian aquifer.[5]

Place of interest[edit]


  1. ^ U.S. Geological Survey Geographic Names Information System: Flat Rock, Ohio
  2. ^ Zip Code Lookup
  3. ^ Lang, William (1880). History of Seneca County, from the Close of the Revolutionary War to July, 1880. Transcript Printing Company. p. 612. 
  4. ^ "Seneca County". Jim Forte Postal History. Archived from the original on 5 January 2016. Retrieved 27 December 2015. 
  5. ^ Baughman, Abraham J. (1911). History of Seneca County, Ohio: A Narrative Account of Its Historical Progress, Its People, and Its Principal Interests. Lewis Publishing Company. p. 483.