Union Township is one of the eleven townships of Warren County, Ohio, United States, located in the central part of the county. It was established January 3, 1815 and named Union as it was formed from parts of Deerfield and Turtlecreek Townships. The 2000 census found 4,668 people in the township, up slightly from the 4,631 in 1990. Of those, 2,230 lived in the unincorporated part of the township and 2,438 lived in the village of South Lebanon. Geography Located in the central part of the county, it borders the following townships: Turtlecreek Township - north Salem Township - east Hamilton Township - south, across the Little Miami River Deerfield Township - southwest The smallest township in the county, it originally had fifteen full and six fractional sections of land totaling 11,970 acres (48 km). However, a large portion of the township has been annexed into South Lebanon, Lebanon, and Mason. The village of South Lebanon remains within the township, but Mason and Lebanon are not and that land has been lost. The township is prone to flooding from the Little Miami and Turtle Creek. The entire township is in the Symmes Purchase and was surveyed in accordance with the unusual plan Symmes chose. Union is the third most popular township name statewide; only Washington (43 townships) and Jackson (37 townships) are more common. History Union Township was organized in 1815. Government The township is governed by a three-member board of trustees, who are elected in November of odd-numbered years to a four-year term beginning on the following January 1. Two are elected in the year after the presidential election and one is elected in the year before it. There is also an elected township fiscal officer, who serves a four-year term beginning on April 1 of the year after the election, which is held in November of the year before the presidential election. Vacancies in the fiscal officership or on the board of trustees are filled by the remaining trustees. Economy There is significant gravel mining in the township. Public services Telephone service is provided through South Lebanon, Lebanon, Mason, and Morrow exchanges, while the South Lebanon, Lebanon, Kings Mills, and Morrow post offices serve the township. Interstate 71 crosses the township from southwest to northeast and State Route 48 from south to north. U.S. Route 42 clips the northwest corner of the township. Formerly, the Middletown and Cincinnati