Union County, Iowa

Union County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 12,534. The county seat is Creston.GeographyAccording to the U.S. Census Bureau, the county has a total area of, of which is land and (0.5%) is water.Major highways20px U.S. Highway 3420px U.S. Highway 16920px Iowa Highway 25Adjacent countiesAdair County (northwest)Madison County (northeast)Clarke County (east)Ringgold County (south)Adams County (west)