| 1 | Naples CDP (southwest) | 98.8% |
| 2 | Unincorporated (northeast 2) | 98.2% |
| 3 | Unincorporated (south-southeast 1) | 97.8% |
| 4 | South Windham CDP | 95.7% |
| 5 | Unincorporated (west-southwest) | 95.5% |
| 6 | Casco CDP | 95.2% |
| 7 | Dunstan CDP | 94.4% |
| 8 | Gorham CDP (east) | 94.2% |
| 9 | Unincorporated (east-northeast) | 93.6% |
| 10 | Unincorporated (northwest 3) | 93.1% |
| 11 | Oak Hill CDP (east-northeast) | 93% |
| 12 | Cumberland Center CDP (west-northwest) | 92.8% |
| 13 | Unincorporated (southeast 2) | 92.4% |
| 14 | Standish CDP | 91.7% |
| 15 | South Portland city (east-southeast) | 91.6% |
| 16 | Unincorporated (south) | 91% |
| 17 | Unincorporated (northwest 2) | 90.9% |
| 18 | Unincorporated (northwest 1) | 90.4% |
| 19 | Bridgton CDP (north-northeast) | 89.8% |
| 20 | Brunswick CDP (south) | 89.6% |
| 21 | Unincorporated (east 1) | 89.6% |
| 22 | Unincorporated (north) | 88.9% |
| 23 | Unincorporated (west-northwest 1) | 88.6% |
| 24 | Portland city (east-northeast 2) | 88.3% |
| 25 | Unincorporated (northeast 1) | 87.4% |
| 26 | North Windham CDP (south-southwest) | 86.8% |
| 27 | Cumberland Center CDP (east-southeast) | 86.5% |
| 28 | Unincorporated (west) | 86.2% |
| 29 | Unincorporated (south-southeast 2) | 85.4% |
| 30 | Unincorporated (west-northwest 2) | 85.2% |
| 31 | Naples CDP (northeast) | 84.8% |
| 32 | Steep Falls CDP | 84.4% |
| 33 | Brunswick CDP (west-northwest) | 84.1% |
| 34 | South Portland city (south-southwest) | 83.4% |
| 35 | North Windham CDP (east-southeast) | 83% |
| 36 | Westbrook city (north) | 82.8% |
| 37 | Bridgton CDP (south-southwest) | 82.3% |
| 38 | Unincorporated (southeast 1) | 82% |
| 39 | Portland city (northwest 2) | 81.6% |
| 40 | Gorham CDP (west) | 81.2% |
| 41 | South Portland city (west-southwest) | 80.7% |
| 42 | Gray CDP | 80.6% |
| 43 | Yarmouth CDP | 79.8% |
| 44 | Little Falls CDP | 78.5% |
| 45 | Falmouth CDP | 77.7% |
| 46 | Brunswick CDP (northwest) | 76.2% |
| 47 | Brunswick CDP (east-northeast) | 75.3% |
| 48 | Westbrook city (north-northwest) | 75.2% |
| 49 | Portland city (west 2) | 71.7% |
| 50 | Cousins Island CDP | 71.6% |
| 51 | Unincorporated (east 2) | 71.6% |
| 52 | Portland city (west-southwest 3) | 70.9% |
| 53 | Portland city (west-northwest 1) | 70.4% |
| 54 | North Windham CDP (northwest) | 68.3% |
| 55 | Portland city (west-southwest 1) | 68.1% |
| 56 | Portland city (west-northwest 2) | 67.8% |
| 57 | Freeport CDP | 66.9% |
| 58 | Oak Hill CDP (south-southeast) | 65.2% |
| 59 | Westbrook city (south) | 64% |
| 60 | Portland city (northwest 1) | 59.5% |
| 61 | South Portland city (east-northeast) | 56.2% |
| 62 | Oak Hill CDP (west-northwest) | 54.8% |
| 63 | South Portland city (northeast 2) | 54.8% |
| 64 | Westbrook city (southwest) | 54.3% |
| 65 | South Portland city (northeast 1) | 47.4% |
| 66 | Portland city (north) | 46.7% |
| 67 | Portland city (west 1) | 42.2% |
| 68 | Westbrook city (east-southeast) | 41.5% |
| 69 | Portland city (west-southwest 2) | 41% |
| 70 | Portland city (south-southwest 1) | 40.3% |
| 71 | Portland city (northeast 2) | 38.9% |
| 72 | Portland city (east-northeast 1) | 37.5% |
| 73 | Brunswick CDP (north) | 29.6% |
| 74 | Portland city (northeast 1) | 27.9% |
| 75 | Portland city (south 1) | 24.4% |
| 76 | Portland city (south-southeast 1) | 21.7% |
| 77 | Portland city (south 2) | 16.8% |
| 78 | Portland city (south-southeast 2) | 13.4% |
| 79 | Portland city (south-southwest 2) | 10.3% |
| 80 | South Portland city (west) | 1.1% |