Ark. Code Ann. § 15-21-302: Creation of zones

(a) For the purpose of the use of the Arkansas Coordinate System 1983 the state is divided into a "North Zone" and a "South Zone".

(b) The area now included in the following counties shall constitute the North Zone: Baxter, Benton, Boone, Carroll, Clay, Cleburne, Conway, Craighead, Crawford, Crittenden, Cross, Faulkner, Franklin, Fulton, Greene, Independence, Izard, Jackson, Johnson, Lawrence, Logan, Madison, Marion, Mississippi, Newton, Perry, Poinsett, Pope, Pulaski, Randolph, Scott, Searcy, Sebastian, Sharp, St. Francis, Stone, Van Buren, Washington, White, Woodruff, and Yell.

(c) The area now included in the following counties shall constitute the South Zone: Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark, Cleveland, Columbia, Dallas, Desha, Drew, Garland, Grant, Hempstead, Hot Spring, Howard, Jefferson, Lafayette, Lee, Lincoln, Little River, Lonoke, Miller, Monroe, Montgomery, Nevada, Ouachita, Phillips, Pike, Polk, Prairie, Saline, Sevier, and Union.