Spring Arbor is an unincorporated community and census-designated place in Jackson County in the U.S. state of Michigan. The population of the CDP was 2,881 at the 2010 census, up from 2,188 at the 2000 census. The CDP is located within Spring Arbor Township. Spring Arbor is the home of Spring Arbor University, a liberal arts university affiliated with the Free Methodist Church.