Texas Municipalities and communities of Union County, Ohio, United StatesCounty seat: MarysvilleCities Dublin‡ Marysville Map of Ohio highlighting Union CountyVillages Magnetic Springs Milford Center Plain City‡ Richwood Unionville Center Townships Allen Claibourne Darby Dover Jackson Jerome Leesburg Liberty Millcreek Paris Taylor Union Washington Washington‡ York CDPs New California Raymond Unincorporatedcommunities Adena Pointe Allen Center Arbela Arnold Bridgeport Broadway Byhalia Chuckery Claibourne Dipple Essex Fleetwood Park Irwin Jerome Lunda New Dover Otter Peoria Pharisburg Pottersburg Somersville Watkins West Jackson Woodland Woodview Park York Center Ghost town Homer Footnotes‡This populated place also has portions in an adjacent county or counties Ohio portal United States portal