Cudahy is a city in Milwaukee County, Wisconsin, United States. The population was 18,204 at the 2020 census. Originally known as the Buckhorn Settlement, it was renamed in the late 1800s when Patrick Cudahy purchased 700 acres of land in the Town of Lake, two miles from the Milwaukee city limits, to build his meatpacking plant. The first village president was elected in 1895, and by 1906 Cudahy was incorporated as a city with a population of 2,556.