| 1 | East Alton village (west-northwest) | 26.1% |
| 2 | Venice city (southwest) | 23.6% |
| 3 | Alton city (west-northwest) | 22.9% |
| 4 | Venice city (northeast) | 22.6% |
| 5 | Alton city (west-southwest) | 21.4% |
| 6 | East Alton village (east-southeast) | 20.4% |
| 7 | Pontoon Beach village (west-southwest) | 19.8% |
| 8 | Alton city (south) | 17.8% |
| 9 | Pontoon Beach village (southeast) | 17.5% |
| 10 | Edwardsville city (west-southwest) | 16.7% |
| 11 | Madison city (south-southwest) | 15.4% |
| 12 | Collinsville city (southwest) | 14.2% |
| 13 | East Alton village (east-northeast) | 13.9% |
| 14 | Pontoon Beach village (west) | 12.4% |
| 15 | Alton city (east-southeast) | 12.2% |
| 16 | Pontoon Beach village (northeast) | 11.5% |
| 17 | South Roxana village (north) | 10.7% |
| 18 | Godfrey village (south-southeast 1) | 10.6% |
| 19 | Granite City city (east) | 10.1% |
| 20 | Alton city (north-northeast) | 9.2% |
| 21 | Granite City city (southwest) | 9% |
| 22 | South Roxana village (south) | 9% |
| 23 | Maryville village (south) | 8.6% |
| 24 | Moro CDP (south-southeast) | 8.6% |
| 25 | Troy city (north) | 8.2% |
| 26 | Worden village | 8% |
| 27 | Collinsville city (west-northwest) | 7.8% |
| 28 | Granite City city (south) | 7.8% |
| 29 | Holiday Shores CDP (north) | 7.5% |
| 30 | Marine village (west) | 7.4% |
| 31 | Moro CDP (northwest) | 7.3% |
| 32 | Bethalto village | 7.2% |
| 33 | St. Jacob village (south) | 7.2% |
| 34 | Godfrey village (northeast) | 7.1% |
| 35 | Alhambra village | 7% |
| 36 | Godfrey village (south-southeast 2) | 6.4% |
| 37 | Godfrey village (north-northwest) | 6.1% |
| 38 | Granite City city (north) | 6.1% |
| 39 | East Alton village (southeast) | 6% |
| 40 | East Alton village (northwest) | 5.9% |
| 41 | Holiday Shores CDP (south) | 5.9% |
| 42 | Wood River city | 5.9% |
| 43 | Collinsville city (east) | 5.8% |
| 44 | Madison city (north-northeast) | 5.8% |
| 45 | Rosewood Heights CDP (southeast) | 5.7% |
| 46 | Godfrey village (west-southwest) | 5.6% |
| 47 | Moro CDP (southwest) | 5.6% |
| 48 | Rosewood Heights CDP (northwest) | 5.4% |
| 49 | Edwardsville city (east-northeast) | 5% |
| 50 | Troy city (south) | 4.8% |
| 51 | Marine village (east) | 4.7% |
| 52 | Moro CDP (east-northeast) | 4.6% |
| 53 | Pontoon Beach village (north-northwest) | 3.4% |
| 54 | Glen Carbon village (southeast) | 3.1% |
| 55 | Maryville village (southwest) | 2.8% |
| 56 | Maryville village (northwest) | 2.6% |
| 57 | Glen Carbon village (north) | 2.5% |
| 58 | St. Jacob village (west-southwest) | 2.2% |
| 59 | Collinsville city (east-northeast) | 2.1% |
| 60 | Glen Carbon village (southwest) | 1.4% |
| 61 | Maryville village (northeast) | 1.4% |
| 62 | Highland city | 0% |
| 63 | St. Jacob village (northeast) | 0% |