Chili is an unincorporated census-designated place in the Town of Fremont in Clark County, Wisconsin, United States. Chili is west-southwest of Marshfield. Chili has a post office with ZIP code 54420. As of the 2010 census, its population was 226.A post office called Chili has been in operation since 1892. Chili was laid out in 1893. The community was named after Chile, in South America.