Morgan County is a county in the State of Ohio. It is located in the Muskingum River Valley. The county was erected from portions of the counties of Guernsey, Washington, and Muskingum by act of the state's general Assembly on December 29, 1817, and it was organized March 1, 1819 (by an act passed December 28, 1818). The county was named in honor of General Daniel Morgan who was an officer during the American Revolution. The county seat is McConnelsville.
The county's initial boundaries were defined as follows:
“Beginning at the southwest corner of township eight, range thirteen; thence east to the eastern bank of the Muskingum River; thence down said river with the meanders thereof to a point where it will first intersect the northern boundary of the donation tract; thence east with the said northern boundary line to the southeast corner of township five, range nine; thence north to the northeast corner of said township; thence east to the western boundary line of Monroe County to the southeast corner of township six, range eight; thence north to the northeast corner of township seven, range eight; thence west to the line of Muskingum County; thence south to the southwest corner of township eight, range ten; thence west to the center of township fourteen, range fourteen; thence south to the southern line of said township; thence east to the southeast corner of said township; thence south to the place of beginning.”
Thus the townships that were initially included within the boundaries were townships 6–7 of range 8; townships 5–7 of range 9; townships 6–8 of range 10; townships 9 (majority of) and 10–11 of range 11; townships 9–11 of range 12; townships 8–9 and the southern portion of township 10 of range 13; and the southeast quarter of township 14 of range 14. By act of the legislature on December 24, 1819, townships 6 and 7 of range 8 were attached to Monroe County.
On March 11, 1845, the townships of Marion and Homer, Athens County, and seven sections of Roxbury Township, Washington County, were attached to Morgan County.
On April 1, 1851, the townships of Brookfield, Noble, Olive, Jackson (formerly Olive Green), and the eastern half of Manchester were taken from Morgan County when Noble County was erected and organized.
Morgan County is a county located in the U.S. state of Ohio. As of the 2010 census, the population was 15,054, making it the fourth-least populous county in Ohio. Its county seat is McConnelsville. The county was created in 1817 and later organized in 1819. It is named for Daniel Morgan, an officer in the American Revolutionary War.