Figure D4 is a State map of Arkansas showing substate region definitions in terms of counties.
The substate region referred to as Areas 1 and 5 is made up of county/counties Benton, Carroll, Crawford, Franklin, Logan, Madison, Polk, Scott, Sebastian, Washington.
The substate region referred to as Areas 2 and 3 is made up of county/counties Baxter, Boone, Cleburne, Fulton, Independence, Izard, Jackson, Marion, Newton, Searcy, Sharp, Stone, Van Buren, White, Woodruff.
The substate region referred to as Areas 4 and 7 is made up of county/counties Clay, Craighead, Crittenden, Cross, Greene, Lawrence, Lee, Mississippi, Monroe, Phillips, Poinsett, Randolph, St. Francis.
The substate region referred to as Area 6 is made up of county/counties Conway, Faulkner, Johnson, Perry, Pope, Yell.
The substate region referred to as Areas 8 and 12 is made up of county/counties Arkansas, Clark, Cleveland, Garland, Grant, Hot Spring, Jefferson, Lincoln, Montgomery, Pike.
The substate region referred to as Area 9 is made up of county/counties Lonoke, Prairie, Pulaski, Saline.
The substate region referred to as Areas 10, 11, and 13 is made up of county/counties Ashley, Bradley, Calhoun, Chicot, Columbia, Dallas, Desha, Drew, Hempstead, Howard, Lafayette, Little River, Miller, Nevada, Ouachita, Sevier, Union.