| 1 | Cedar Rapids city (east-northeast 2) | 29.7% |
| 2 | Marion city (north) | 28.1% |
| 3 | Cedar Rapids city (north-northeast 1) | 23.3% |
| 4 | Cedar Rapids city (southwest 3) | 21.4% |
| 5 | Cedar Rapids city (west 1) | 21.2% |
| 6 | Cedar Rapids city (north-northeast 2) | 20.6% |
| 7 | Marion city (northwest) | 20.3% |
| 8 | Cedar Rapids city (northwest 1) | 19.8% |
| 9 | Hiawatha city (west-northwest) | 19.4% |
| 10 | Marion city (north-northwest) | 18.7% |
| 11 | Marion city (south-southeast) | 18.2% |
| 12 | Central City city | 18% |
| 13 | Mount Vernon city (north) | 17.6% |
| 14 | Cedar Rapids city (south 2) | 16.7% |
| 15 | Marion city (east-northeast) | 16.3% |
| 16 | Center Point city | 15.6% |
| 17 | Cedar Rapids city (east 1) | 14.9% |
| 18 | Cedar Rapids city (east-southeast) | 14.9% |
| 19 | Robins city | 14.8% |
| 20 | Cedar Rapids city (northwest 2) | 14.6% |
| 21 | Marion city (west) | 14.6% |
| 22 | Springville city | 14.6% |
| 23 | Marion city (east) | 14.3% |
| 24 | Cedar Rapids city (north-northeast 5) | 13.5% |
| 25 | Cedar Rapids city (north-northwest) | 12.7% |
| 26 | Cedar Rapids city (south 3) | 12.7% |
| 27 | Cedar Rapids city (east 3) | 12.6% |
| 28 | Cedar Rapids city (southwest 4) | 12.4% |
| 29 | Cedar Rapids city (east-northeast 1) | 12.2% |
| 30 | Cedar Rapids city (east 2) | 11.6% |
| 31 | Cedar Rapids city (northeast 2) | 11.3% |
| 32 | Cedar Rapids city (southeast 3) | 10.8% |
| 33 | Cedar Rapids city (southeast 1) | 10.7% |
| 34 | Cedar Rapids city (southwest 5) | 10.7% |
| 35 | Cedar Rapids city (west-southwest 1) | 10.6% |
| 36 | Cedar Rapids city (north-northeast 4) | 9.9% |
| 37 | Mount Vernon city (south) | 9.8% |
| 38 | Cedar Rapids city (north-northeast 6) | 9.6% |
| 39 | Cedar Rapids city (south 4) | 9.5% |
| 40 | Cedar Rapids city (northeast 1) | 9.4% |
| 41 | Cedar Rapids city (south 5) | 9.3% |
| 42 | Coggon city | 9.3% |
| 43 | Cedar Rapids city (southwest 2) | 9.2% |
| 44 | Cedar Rapids city (north-northeast 3) | 9.1% |
| 45 | Cedar Rapids city (west-southwest 3) | 8.9% |
| 46 | Cedar Rapids city (southeast 2) | 8.8% |
| 47 | Cedar Rapids city (west-northwest) | 8.6% |
| 48 | Cedar Rapids city (south 1) | 8.3% |
| 49 | Marion city (southwest) | 6.6% |
| 50 | Marion city (south) | 6.4% |
| 51 | Cedar Rapids city (west-southwest 2) | 6.3% |
| 52 | Cedar Rapids city (southwest 1) | 5.3% |
| 53 | Hiawatha city (east-southeast) | 4.4% |
| 54 | Cedar Rapids city (west 2) | 3.3% |