Union Township, Rush County, IndianaUnion Township is one of twelve townships in Rush County, Indiana. As of the 2020 census, its population was 734 and it contained 324 housing units.HistoryThe Dr. John Arnold Farm was listed on the National Register of Historic Places in 1989.GeographyAccording to the 2010 census, the township has a total area of, all land.Cities and towns GlenwoodUnincorporated towns Fairview at Falmouth at Gings atSettlements Mauzy at * An old variant name of the community was Griffin Station. William Mauzy worked as a teacher near the old Griffin Station. A post office was established at Mauzy in 1884, and remained in operation until it was discontinued in 1905.