Pickaway County, OH
History
The future state of Ohio was part of the Northwest Territory, created in 1787. To begin providing local control of this area, several counties were designated, among them Washington (1788) and Wayne (1796) counties. Portions of these counties were partitioned off to create Ross (1798), Fairfield (1800), and Franklin (1803) counties. An act of the General Assembly of Ohio (12 January 1810) directed that portions of Fairfield, Franklin, and Ross counties were to be partitioned off to create Pickaway County effective 1 March 1810, with Circleville named as county seat later that year (see History of Circleville).Source: Wikipedia
Modern Day Adjacent Counties
Franklin County - northFairfield County - east
Hocking County - southeast
Ross County - south
Fayette County - southwest
Madison County - northwest