Ashippun is an unincorporated census-designated place located in the town of Ashippun, Dodge County, Wisconsin, United States. Ashippun is located on Wisconsin Highway 67 7 miles south of Neosho. Ashippun has a post office with ZIP code 53003. At the 2020 census, its population was 1,166, more than triple the population of 333 in 2010. The primary community area is actually split into two parts, Ashippun and Old Ashippun.