Black Rock is a town in Lawrence County, Arkansas, United States, along the Black River. The population was 717 at the 2000 census.GeographyBlack Rock is located at .According to the United States Census Bureau, the town has a total area of 3.4sqmi, of which, 3.3sqmi of it is land and 0.2sqmi of it is water.List Of Highways25px U.S. 41222px Highway 2525px Highway 11725px Highway 361DemographicsAs of the census of 2000, there were 717 people, 284 households, and 199 families residing in the city. The population density was 218.6 people per square mile (84.4/km²). There were 334 housing units at an average density of 101.8 per square mile (39.3/km²). The racial makeup of the city was 99.02% White, 0.14% Native American, and 0.84% from two or more races. 0.28% of the population were Hispanic or Latino of any race.
