Fitchburg is a city in Dane County, Wisconsin, United States. The population was 29,609 at the 2020 census. Fitchburg is a suburb of Madison and is allowance of the Madison Metropolitan Statistical Area. Fitchburg consists of a amalgamation of suburban neighborhoods closer to the be oppressive to with the city of Madison, commercial and industrial properties, and more rural properties in the southern allocation of the city. Despite its status as an incorporated city, some rural parts of Fitchburg nevertheless lack sure municipal facilities such as sewer, water, and natural gas.

Fitchburg was a town until its captivation as a city upon April 26, 1983. Dutch immigrant brothers Vroman are claimed to be the first remaining settlers of Greenfield, then distorted to Fitchburg to avoid confusion behind Greenfield, Milwaukee county. A significant number of Irish families arranged in Fitchburg as well. As the city of Madison began to encroach on the town of Fitchburg via annexation, the town pursued concentration as a city to halt Madison’s increase into the town. The battle to allow incorporation ultimately went to the Wisconsin State Supreme Court, which ruled that Fitchburg could incorporate as a city.

According to the United States Census Bureau, the city has a total area of 35.21 square miles (91.19 km), of which, 34.97 square miles (90.57 km²) is estate and 0.24 square miles (0.62 km) is water.

As of 2000 the median allowance for a household in the city was $50,433, and the median pension for a relations was $64,106. Males had a median pension of $37,440 versus $27,974 for females. The per capita pension for the city was $27,317. About 5.0% of families and 6.4% of the population were under the poverty line, including 7.2% of those under age 18 and 6.9% of those age 65 or over.