Union City is a village in Branch and Calhoun counties in the U.S. state of Michigan. Located mostly within Union Township in Branch County, it sits at the junction of the Coldwater and St. Joseph rivers; the Calhoun County portion lies within that county's Burlington Township. It is part of the Battle Creek, Michigan Metropolitan Statistical Area. The population was 1,599 at the 2010 census.M-60 passes just north of the village.HistoryUnion City is located on the northern border of Branch County, about ten miles northwest of Coldwater. This is a small picturesque and historic town that functions primarily as an adjunct community to the greater Coldwater and Battle Creek areas. It has a striking turn-of-the-century look architecturally, with well–preserved downtown buildings and several Victorian style homes. A Civil War monument can be seen on the north end of the main street area in the churchyard, while a veteran’s memorial along the riverbank to the south end commemorates those who fought in more recent wars.