Union Township is one of twelve townships in Floyd County, Iowa, USA. As of the 2000 census, its population was 682. Geography According to the United States Census Bureau, Union Township covers an area of 41.16 square miles (106.59 square kilometers); of this, 40.78 square miles (105.63 square kilometers, 99.1 percent) is land and 0.37 square miles (0.97 square kilometers, 0.91 percent) is water. Cities, towns, villages Marble Rock Unincorporated towns Aureola at (This list is based on USGS data and may include former settlements.) Adjacent townships Ulster Township (north) Saint Charles Township (northeast) Pleasant Grove Township (east) Dayton Township, Butler County (southeast) Coldwater Township, Butler County (south) Bennezette Township, Butler County (southwest) Scott Township (west) Rockford Township (northwest) Cemeteries The township contains these three cemeteries: Hillside, Westside and St. Mary's Catholic, Roseville, Iowa. Major highways Iowa Highway 14 Rivers Shell Rock River School districts Greene Community School District Rudd-Rockford-Marble Rock Community School District Political districts Iowa's 4th congressional district State House District 14 State Senate District 7 References United States Census Bureau 2008 TIGER/Line Shapefiles United States Board on Geographic Names (GNIS) United States National Atlas External links US-Counties.com City-Data.com Townships in Floyd County, Iowa Townships in Iowa