Ixonia is a town in Jefferson County, Wisconsin. The population was 4,385 at the become old of the 2010 census. The unincorporated communities of Ixonia and Pipersville are located within the town.

The town of Union was estranged from the township of Watertown on February 12, 1841. Five years later, Union was further divided into two new towns. The first town became known as Concord, and as the residents could not on the other hand agree upon a publish for the second town, the proclaim was fixed by drawing letters at random until a publish could be formed from the letters. As a result, “Ixonia” was the name firm to the town on January 21, 1846, and nevertheless remains the forlorn town with this declare in the United States.

According to the United States Census Bureau, the town has a total area of 36.3 square miles (93.9 km), of which 35.8 square miles (92.7 km²) is land and 0.50 square miles (1.3 km), or 1.35%, is water.

As of the census of 2000, there were 2,902 people, 1,047 households, and 864 families residing in the town. The population density was 80.7 people per square mile (31.2/km). There were 1,082 housing units at an average density of 11.6 persons/km² (30.1 persons/sq mi). The racial makeup of the town was 98.55% White, 0.07% African American, 0.21% Native American, 0.31% Asian, 0.03% Pacific Islander, 0.28% from other races, and 0.55% from two or more races. 0.90% of the population were Hispanic or Latino of any race.