Together they have gathered a lot of the missing information lost in the fire. It derives its name from John Adams, our second president. The county seat is situated on the Ohio River 100 miles south of Columbus and 50 miles from Cincinnati.
West Union is the county seat.
The most significant feature of the county is the giant earth mound in the form of a serpent located in the Serpent Mound State Memorial claimed as the largest effigy mound in the world, the 1,254 foot structure was constructed by the Hopewell Indians. Tobacco is the main agricultural product in Adams County. Their courthouse burned in 1910, some records were saved, some as early as 1796, others to 1799 including records of several countys before their inception. This is an area that explains where to look for vital records in the state of Ohio.