Dolton is a village in Cook County, Illinois, United States. The population was 21,426 at the 2020 census. Dolton is located just west of the expressway Interstate 94 and immediately south of the city limits of Chicago. Its most common ZIP code is 60419. Dolton is bordered by Chicago to the north, Riverdale and Harvey to the west, South Holland to the south and Calumet City to the east.