Crumpton is a census-designated place in Queen Anne's County, Maryland, United States. Crumpton is located along the Chester River, 5 miles west-southwest of Millington. Crumpton has a post office with the ZIP code 21628.Crumpton changed from an unincorporated community to a census-designated place for the 2020 Census. Per the 2020 Census, the population was 496.