| 1 | Rockford city (west-northwest 2) | 17.8% |
| 2 | Rockford city (south-southwest 5) | 7.6% |
| 3 | Rockford city (west-northwest 3) | 7.3% |
| 4 | Rockford city (west 4) | 5.1% |
| 5 | Rockford city (west-southwest 2) | 5.1% |
| 6 | Rockford city (west 2) | 4.7% |
| 7 | Rockford city (south-southeast 1) | 4.5% |
| 8 | Rockford city (northwest 1) | 4.2% |
| 9 | Rockford city (west-southwest 1) | 3.4% |
| 10 | Rockford city (south-southeast 2) | 2.1% |
| 11 | Rockford city (west 1) | 2.1% |
| 12 | Rockford city (east-southeast 3) | 1.8% |
| 13 | Cherry Valley village (north-northeast) | 1.3% |
| 14 | Rockford city (southeast 2) | 1.3% |
| 15 | Rockford city (west-northwest 1) | 1.2% |
| 16 | Loves Park city (west) | 1% |
| 17 | Rockford city (west-northwest 4) | 0.9% |
| 18 | Rockford city (east 1) | 0.8% |
| 19 | Rockford city (south-southeast 4) | 0.8% |
| 20 | South Beloit city (east) | 0.7% |
| 21 | Roscoe village (south-southwest) | 0.6% |
| 22 | Rockford city (north-northeast 1) | 0.4% |
| 23 | Rockford city (south 1) | 0.4% |
| 24 | Machesney Park village (southwest 2) | 0.3% |
| 25 | Roscoe village (east-northeast) | 0.3% |
| 26 | Rockford city (south-southwest 1) | 0.2% |
| 27 | Rockford city (northwest 2) | 0.1% |
| 28 | Rockford city (west-southwest 3) | 0.1% |
| 29 | Cherry Valley village (northwest) | 0% |
| 30 | Cherry Valley village (south-southwest) | 0% |
| 31 | Lake Summerset CDP | 0% |
| 32 | Loves Park city (east) | 0% |
| 33 | Loves Park city (east-northeast) | 0% |
| 34 | Loves Park city (north) | 0% |
| 35 | Loves Park city (southeast) | 0% |
| 36 | Loves Park city (southwest) | 0% |
| 37 | Loves Park city (west-southwest) | 0% |
| 38 | Machesney Park village (north-northeast) | 0% |
| 39 | Machesney Park village (northeast) | 0% |
| 40 | Machesney Park village (southwest 1) | 0% |
| 41 | Machesney Park village (west-southwest) | 0% |
| 42 | Pecatonica village | 0% |
| 43 | Rockford city (east 2) | 0% |
| 44 | Rockford city (east-northeast 1) | 0% |
| 45 | Rockford city (east-northeast 2) | 0% |
| 46 | Rockford city (east-northeast 3) | 0% |
| 47 | Rockford city (east-northeast 4) | 0% |
| 48 | Rockford city (east-southeast 1) | 0% |
| 49 | Rockford city (east-southeast 2) | 0% |
| 50 | Rockford city (east-southeast 4) | 0% |
| 51 | Rockford city (north 1) | 0% |
| 52 | Rockford city (north 2) | 0% |
| 53 | Rockford city (north-northeast 2) | 0% |
| 54 | Rockford city (north-northwest 1) | 0% |
| 55 | Rockford city (north-northwest 2) | 0% |
| 56 | Rockford city (north-northwest 3) | 0% |
| 57 | Rockford city (north-northwest 4) | 0% |
| 58 | Rockford city (north-northwest 5) | 0% |
| 59 | Rockford city (north-northwest 6) | 0% |
| 60 | Rockford city (northeast 1) | 0% |
| 61 | Rockford city (northeast 2) | 0% |
| 62 | Rockford city (northeast 3) | 0% |
| 63 | Rockford city (northeast 4) | 0% |
| 64 | Rockford city (northwest 3) | 0% |
| 65 | Rockford city (south 2) | 0% |
| 66 | Rockford city (south 3) | 0% |
| 67 | Rockford city (south-southeast 3) | 0% |
| 68 | Rockford city (south-southwest 2) | 0% |
| 69 | Rockford city (south-southwest 4) | 0% |
| 70 | Rockford city (south-southwest 6) | 0% |
| 71 | Rockford city (southeast 1) | 0% |
| 72 | Rockford city (west 3) | 0% |
| 73 | Rockford city (west-southwest 4) | 0% |
| 74 | Rockford city (west-southwest 5) | 0% |
| 75 | Rockton village (east-northeast) | 0% |
| 76 | Rockton village (west-southwest) | 0% |
| 77 | Roscoe village (northwest) | 0% |
| 78 | South Beloit city (west) | 0% |
| 79 | Winnebago village | 0% |