Region 1 contains most of the districts in the state north of Interstate 40.
Region 2 contains most of the districts south of Interstate 40 to US-60.
Region 3 contains most districts found in the southeast portion of the state.
Region 4 contains most districts west of Region 3 to Interstate 19
Region 5 contains most districts west Phoenix along the Colorado River.
Region 6 contains all districts in the Phoenix-Metro area and surrounding rural areas.