Hollandale is a city in Washington County, Mississippi, United States. The population was 2,323 at the 2020 census. Deer Creek flows through …Hollandale is a city in Washington County, Mississippi, United States. The population was 2,323 at the 2020 census. Deer Creek flows through Hollandale, and the Leroy Percy State Park is west of the city along Mississippi Highway 12. The Hollandale Municipal Airport is northeast of the city.