Dunnville is an unincorporated community with a post office in southern Casey County, Kentucky, United States, near the intersection of the Green River and Goose Creek. It was named for Virginian James Richard Dunn who settled the area in the 1840s and operated a mill. Dunnville is located at 37°12′0″N 85°0′36″W﻿ / ﻿37.2°N 85.01°W﻿ / 37.2; -85.01 (37.2000709, -85.0099547). Today several sawmills and Tarter Gate, the world's largest manufacturer of animal management equipment, are located there, as Casey County is known for the manufacturing of tubular gates and related farm equipment. The post office was first opened on July 3, 1879. It is also known for the "World Famous" Dogwalk Market. There are several churches in the area.