Battle Creek is a city in northwestern Calhoun County, Michigan, United States, at the confluence of the Kalamazoo and Battle Creek rivers. As of the 2020 census, the city had a total population of 52,731. It is the principal city of the Battle Creek metropolitan statistical area, which encompasses all of Calhoun County. Nicknamed "Cereal City", it is best known as the home of WK Kellogg Co and the founding city of Post Consumer Brands. In Battle Creek, the Kellogg brothers invented the first cereal by accident in an attempt to make granola.