Delton is a census-designated place (CDP) in Barry Township in Barry County, Michigan, United States. The population was 872 at the 2010 census.
Delton is located in southwestern Barry County. It is bordered to the north by Hope Township. To the west the CDP extends slightly into Prairieville Township, Cloverdale and Cedar Creek. State highway M-43 runs through the town center, leading northeast 14 miles (23 km) to Hastings and southwest 19 miles (31 km) to downtown Kalamazoo.
According to the United States Census Bureau, the Delton CDP has a total area of 2.2 square miles (5.8 km2), of which 2.2 square miles (5.6 km2) is land and 0.077 square miles (0.2 km2), or 2.99%, is water. The eastern end of Crooked Lake occupies the western part of the CDP.
Delton Kellogg High School, Middle School, and Elementary school are all located in the CDP, in the center of town.
In 1883 a railroad was created and went through Delton. In 2008 the last tracks were torn up. In 1936, Delton Kellogg Agricultural school was built, and that helped increase Delton's population.