The Union County Courthouse is located in Creston, Iowa, United States. It is the fourth building used as a court house in Union County. Court functions were initially held in rented rooms in private residences in Afton. The first courthouse was a frame structure built in 1857. The building was also used as a school and a church. The Baptist congregation paid a quarter of the costs to purchase the bell. Stone for the second courthouse, completed in 1872, was quarried along the Grand River. The third courthouse, completed in 1890, was built in Creston by the citizens of that town as an inducement to have the county seat moved there. The present courthouse replaced it in 1952. A $300,000 bond issue passed in 1946, and the Modernist structure was completed in 1952.
