| 1 | Venice city (southwest) | 39.9% |
| 2 | Moro CDP (southwest) | 38.2% |
| 3 | Alton city (west-northwest) | 34.5% |
| 4 | Alton city (south) | 30.6% |
| 5 | Pontoon Beach village (west-southwest) | 30.2% |
| 6 | Collinsville city (east-northeast) | 29.4% |
| 7 | Alton city (west-southwest) | 27.9% |
| 8 | East Alton village (west-northwest) | 26% |
| 9 | Edwardsville city (east-northeast) | 25.5% |
| 10 | Venice city (northeast) | 24.2% |
| 11 | Madison city (south-southwest) | 22.5% |
| 12 | Pontoon Beach village (west) | 22.1% |
| 13 | Godfrey village (south-southeast 1) | 20.3% |
| 14 | Pontoon Beach village (southeast) | 20.2% |
| 15 | East Alton village (northwest) | 19.2% |
| 16 | East Alton village (east-northeast) | 18.3% |
| 17 | Alton city (north-northeast) | 17.9% |
| 18 | Alton city (east-southeast) | 17.5% |
| 19 | Godfrey village (northeast) | 15.9% |
| 20 | Godfrey village (south-southeast 2) | 15.2% |
| 21 | Edwardsville city (west-southwest) | 15% |
| 22 | East Alton village (east-southeast) | 14.6% |
| 23 | South Roxana village (south) | 14.3% |
| 24 | Pontoon Beach village (north-northwest) | 13.8% |
| 25 | Maryville village (southwest) | 13% |
| 26 | Granite City city (south) | 12.9% |
| 27 | Pontoon Beach village (northeast) | 12.8% |
| 28 | Moro CDP (south-southeast) | 12.5% |
| 29 | Madison city (north-northeast) | 12.2% |
| 30 | South Roxana village (north) | 11.4% |
| 31 | East Alton village (southeast) | 11.2% |
| 32 | Granite City city (east) | 10.7% |
| 33 | Wood River city | 10.3% |
| 34 | Rosewood Heights CDP (southeast) | 10% |
| 35 | Granite City city (southwest) | 9.5% |
| 36 | Collinsville city (southwest) | 9.4% |
| 37 | Rosewood Heights CDP (northwest) | 9.2% |
| 38 | Collinsville city (west-northwest) | 9.1% |
| 39 | Holiday Shores CDP (south) | 8.9% |
| 40 | Glen Carbon village (north) | 8.8% |
| 41 | Collinsville city (east) | 8.7% |
| 42 | Moro CDP (northwest) | 8.2% |
| 43 | St. Jacob village (northeast) | 7.4% |
| 44 | Godfrey village (west-southwest) | 7.1% |
| 45 | Bethalto village | 6.9% |
| 46 | St. Jacob village (south) | 6.9% |
| 47 | Alhambra village | 6.7% |
| 48 | Granite City city (north) | 6.7% |
| 49 | Glen Carbon village (southwest) | 6.3% |
| 50 | Holiday Shores CDP (north) | 5.9% |
| 51 | Maryville village (northwest) | 5.6% |
| 52 | Maryville village (northeast) | 4.5% |
| 53 | Godfrey village (north-northwest) | 4.3% |
| 54 | Maryville village (south) | 4.3% |
| 55 | Moro CDP (east-northeast) | 4.3% |
| 56 | Worden village | 4.3% |
| 57 | Highland city | 3.5% |
| 58 | Glen Carbon village (southeast) | 3.3% |
| 59 | Marine village (east) | 2.9% |
| 60 | Troy city (north) | 2.3% |
| 61 | Marine village (west) | 2.2% |
| 62 | Troy city (south) | 2.2% |
| 63 | St. Jacob village (west-southwest) | 1.2% |