Mount Holly

(Arkansas)

Mount Holly is an unincorporated community and census-designated place (CDP) in Union County, Arkansas, United States. Mount Holly is located at the junction of Arkansas highways 57 and 160, 18 miles (29 km) west-northwest of El Dorado. Mount Holly has a post office with ZIP code 71758. It was first listed as a CDP in the 2020 census with a population of 123.