Monroeville, Jefferson County, OhioMonroeville is an unincorporated community in Jefferson County, in the U.S. state of Ohio.HistoryA former variant name of Monroeville was Croxton, for founder Abraham Croxton. Monroeville was laid out in 1836. The name honors James Monroe, 5th President of the United States. A post office called Croxton was established in 1833, and remained in operation until 1895.