The Town[3] of Johnson is located in Marathon County, Wisconsin, United States.

[4] The unincorporated communities of Corinth, Milan, and Wuertsburg are located in the town.

According to the United States Census Bureau, the town has a total area of 35.0 square miles (90.6 km2), all of it land.

There were 313 housing units at an average density of 8.9 per square mile (3.5/km2).

The racial makeup of the town was 99.50% White, 0.10% African American, and 0.40% from two or more races.