(a) Commission District One is described as follows: That area of the county which lies to the East of U.S. Highway 31 and North of U.S. Highway 278.
(b) Commission District Two is described as follows: That area of the county which lies to the West of U.S. Highway 31 and North of U.S. Highway 278.
(c) Commission District Three is described as follows: That area of the county which lies East of U.S. Highway 31 and South of U.S. Highway 278.
(d) Commission District Four is described as follows: That area of the county which lies West of U.S. Highway 31 and South of U.S. Highway 278.