Counties:

• Dallas (part) (EDs 25-20 to 25-23, 25-25 to 25-35)
• Dickinson (EDs 30-1 to 30-3, 30-20, 30-4 to 30-11, 30-13, 30-12, 30-14 to 30-15, 30-22, 30-16 to 30-19, 30-21, 30-23 to 30-24)
• Davis (EDs 26-1, 26-20, 26-2 to 26-19)
• Emmet (EDs 32-1 to 32-13, 32-20, 32-14 to 32-19, 32-21)

Counties:

• Decatur (EDs 27-1 to 27-2, 27-23, 27-3 to 27-22, 27-24 to 27-27)
• Delaware (EDs 28-1, 28-17, 28-2 to 28-16, 28-18 to 28-32)
• Des Moines (part) (EDs 29-1 to 29-2, 29-18 to 29-20, 29-22, 29-21, 29-23 to 29-33)

Counties:

• Des Moines (part) (EDs 29-3 to 29-17)
• Dubuque (part) (EDs 31-1, 31-59, 31-2 to 31-6, 31-53, 31-7 to 31-27)

Counties:

• Dubuque (part) (EDs 31-28 to 31-52, 31-54 to 31-58, 31-60)
• Fayette (part) (EDs 33-1 to 33-26)

Counties:

• Fayette (part) (EDs 33-27 to 33-34, 33-36, 33-35, 33-37 to 33-38)
• Floyd (EDs 34-1 to 34-11, 34-14 to 34-15, 34-12 to 34-13, 34-16 to 34-22)
• Franklin (EDs 35-1 to 35-5, 35-10, 35-13, 35-25 (NP), 35-6 to 35-9, 35-11 to 35-12, 35-14 to 35-24, 35-26 to 35-29)
• Fremont (part) (EDs 36-1 to 36-10)

Counties:

• Fremont (part) (EDs 36-11 to 36-21)
• Greene (EDs 37-1 to 37-25)
• Grundy (EDs 38-1 to 38-23)
• Guthrie (part) (EDs 39-1 to 39-6, 39-18, 39-7 to 39-17, 39-19 to 39-20)

Counties:

• Guthrie (part) (EDs 39-21 to 39-28)
• Hamilton (EDs 40-1 to 40-28)
• Hancock (EDs 41-1 to 41-3, 41-25, 41-4 to 41-7, 41-22, 41-8 to 41-21, 41-23 to 41-24, 41-26)
• Hardin (part) (EDs 42-1 to 42-10, 42-30, 42-11 to 42-14)

Counties:

• Hardin (part) (EDs 42-16, 42-15, 42-17 to 42-29)
• Harrison (EDs 43-1 to 43-32)
• Henry (EDs 44-1 to 44-5, 44-27, 44-6 to 44-26)

Counties:

• Howard (EDs 45-1, 45-8, 45-2 to 45-7, 45-9 to 45-21)
• Humboldt (EDs 46-1 to 46-2, 46-25, 46-3 to 46-11, 46-20, 46-12 to 46-19, 46-21 to 46-24, 46-26 to 46-27)
• Ida (EDs 47-1 to 47-17)
• Iowa (part) (EDs 48-1 to 48-8, 48-19, 48-9 to 48-16, 48-23, 48-17 to 48-18)

Counties:

• Iowa (part) (EDs 48-20 to 48-22, 48-24 to 48-25)
• Jackson (EDs 49-1 to 49-5, 49-35, 49-6 to 49-8, 49-33, 49-9 to 49-24, 49-26, 49-25, 49-27 to 49-32, 49-34, 49-36 to 49-38)
• Jasper (part) (EDs 50-1 to 50-3, 50-19, 50-4 to 50-18, 50-37, 50-20 to 50-28)

Counties:

• Jasper (part) (EDs 50-29 to 50-36, 50-38)
• Jefferson (EDs 51-1 to 51-22)
• Johnson (part) (EDs 52-1 to 52-26)

Counties:

• Johnson (part) (EDs 52-27 to 52-35)
• Jones (EDs 53-1 to 53-13, 53-26, 53-14 to 53-25, 53-27 to 53-28)
• Keokuk (EDs 54-1 to 54-32)

Counties:

• Kossuth (EDs 55-1 to 55-8, 55-13, 55-9 to 55-12, 55-14 to 55-44)
• Lee (part) (EDs 56-1 to 56-2, 56-6, 56-3 to 56-5, 56-7 to 56-10, 56-18 to 56-19, 56-11 to 56-17)

Counties:

• Lee (part) (EDs 56-20 to 56-25, 56-36, 56-26 to 56-35)
• Linn (part) (EDs 57-1 to 57-27, 57-31, 57-28 to 57-30, 57-32 to 57-40)

County:

• Linn (part) (EDs 57-41 to 57-72)

Counties:

• Louisa (EDs 58-1 to 58-21)
• Lucas (EDs 59-1 to 59-19)
• Lyon (EDs 60-1 to 60-15, 60-28, 60-16 to 60-23, 60-25, 60-24, 60-26 to 60-27, 60-29)
• Madison (part) (EDs 61-13, 61-18, 61-14 to 61-17, 61-19 to 61-26)

Counties:

• Madison (part) (EDs 61-1 to 61-12)
• Mahaska (EDs 62-1 to 62-31)

Counties:

• Marion (EDs 63-1 to 63-32)
• Marshall (part) (EDs 64-1 to 64-13, 64-33, 64-14 to 64-31)

Counties:

• Marshall (part) (EDs 64-32, 64-34 to 64-40)
• Mills (EDs 65-1 to 65-24)
• Mitchell (EDs 66-1 to 66-26)
• Monona (EDs 67-1, 67-15, 67-17, 67-31, 67-2 to 67-5, 67-13, 67-6 to 67-12, 67-14, 67-16, 67-18 to 67-30, 67-32 to 67-33)

Counties:

• Monroe (EDs 68-1 to 68-20)
• Montgomery (EDs 69-1 to 69-4, 69-16, 69-5 to 69-15, 69-17 to 69-21)
• Muscatine (part) (EDs 70-1 to 70-18)

Counties:

• Muscatine (part) (EDs 70-19 to 70-28)
• O'Brien (EDs 71-1 to 71-9, 71-11, 71-26, 71-10, 71-12 to 71-21, 71-30, 71-22 to 71-25, 71-27 to 71-29, 71-31)
• Osceola (EDs 72-1 to 72-16)
• Palo Alto (EDs 74-1 to 74-3, 74-9, 74-4 to 74-8, 74-10 to 74-26)

Counties:

• Page (EDs 73-1, 73-4, 73-2 to 73-3, 73-5 to 73-7, 73-18, 73-8 to 73-17, 73-19 to 73-24, 73-29, 73-25 to 73-28, 73-30 to 73-34)
• Plymouth (EDs 75-1 to 75-37)

Counties:

• Pocahontas (EDs 76-1 to 76-13, 76-16, 76-14 to 76-15, 76-17 to 76-28)
• Polk County, Des Moines City (part) (EDs 77-89 to 77-95, 77-1 to 77-2, 77-130, 77-3, 77-131 to 77-132, 77-4 to 77-7)

County:

• Polk County, Des Moines City (part) (EDs 77-8 to 77-29)

County:

• Polk County, Des Moines City (part) (EDs 77-30 to 77-54)