Columbiana County is a county located in the state of Ohio. As of 2000, the population was 112,075. It is named for Christopher Columbus and the county seat is Lisbon. The East Liverpool–SalemMicropolitan Statistical Area includes all of Columbiana County. The principal historic Indian tribes in the area were the Wyandots, Mingoes, and Delawares. Throughout the second half of the 1700s white explorers, starting with Christopher Gist in 1750, came to the area. George Washington, while engaged in land examinations, camped in the area of present-day East Liverpool in 1774. Columbiana County was founded in 1829 and named in honor of Christopher Columbus. It was the scene of the northern-most action fought during the American Civil War; in July 1863Confederate raiders under John Morgan were surrounded and captured by Union forces. It was also the residence from 1809-1833 of Robert Justice. According to the U.S. Census Bureau, the county has a total area of 535 square miles. 532 square miles of it is land and 3 square miles of it is water. As of the census of 2000, there were 112,075 people, 42,973 households, and 30,682 families residing in the county. The population density was 210 people per square mile. There were 46,083 housing units at an average density of 86 per square mile.
