Thayer is located in Union County, IA. The population is 85, making Thayer the 6th largest city in Union County.
There are 0 public schools in Thayer with an average Homefacts rating of NA. The total crime rate for Thayer is very low , and there are 1 registered sex offenders residing in the city. Unemployment in Thayer is low and the median home sales price is $0. Detailed and up-to-date Thayer property reports are available for any property address.