Union is located in Hardin County, IA. The population is 528, making Union the 7th largest city in Hardin County.
There are 1 public schools in Union with an average Homefacts rating of B+. The total crime rate for Union is moderate , and there are 4 registered sex offenders residing in the city. Unemployment in Union is low and the median home sales price is $0. Detailed and up-to-date Union property reports are available for any property address.
Cities near Union include Union Township, Whitten and Liscomb.