Marysville is a city in and the county seat of Union County, Ohio, United States. The population was 22,094 at the 2010 census. This marks a 38.59% increase from 2000.Marysville's longtime slogan is "Where the Grass is Greener".In December 2008, Marysville was designated as a "Preserve America Community" by the First Lady Laura Bush.HistoryOriginsMarysville was originally part of Northwest Territory, and then became part of the Virginia Military District within that territory, and eventually became part of the state of Ohio. One of the original surveyors of the area was James Galloway, Jr., who first visited in 1805. Marysville was founded in 1819 by Samuel W. Cuthbertson, who named the town after his daughter Mary, along the small waterway of Mill Creek.County seat designationAfter the organization of the county by the Ohio Legislature, Marysville was designated as the seat of Union County. The first recorded meeting of the commissioners was in 1820. Between 1835 and 1840, a courthouse was constructed. Eventually, a new dedicated courthouse would be built in Marysville on January 27, 1883, which is also presently in use.In 1849, a county infirmary was authorized. The first county jail was a log structure that sat on the south side of East Center street, in the rear of the courthouse. Eventually a new jail was authorized by the commissioners and built in the 1870s. In 1878 the county purchased a 10-ton safe for the treasury, that eventually was moved into courthouse.
