Milton is a town in Sussex County, Delaware, United States, on the Delmarva Peninsula. It is located on the Broadkill River, which empties into Delaware Bay. The population was 3,291 at the 2020 census.

Sussex County is located in the southern part of the U.S. state of Delaware, on the Delmarva Peninsula. As of the 2020 census, the population was 237,378, making it the state's second most populated county only behind New Castle and ahead of Kent. The county seat is Georgetown.