| 1 | Casco CDP | 39.5% |
| 2 | Dunstan CDP | 38.3% |
| 3 | Portland city (west-northwest 1) | 37.1% |
| 4 | Portland city (northeast 2) | 36.9% |
| 5 | Falmouth CDP | 36.3% |
| 6 | Portland city (west 1) | 35.8% |
| 7 | Unincorporated (west-northwest 2) | 33.8% |
| 8 | Portland city (south 1) | 32.4% |
| 9 | Unincorporated (south-southeast 2) | 32% |
| 10 | Portland city (east-northeast 2) | 31.1% |
| 11 | Westbrook city (southwest) | 30.6% |
| 12 | Brunswick CDP (south) | 28.2% |
| 13 | Unincorporated (northwest 1) | 27.2% |
| 14 | Cumberland Center CDP (east-southeast) | 26.3% |
| 15 | Unincorporated (south-southeast 1) | 25.9% |
| 16 | Unincorporated (southeast 1) | 25.6% |
| 17 | Portland city (south-southwest 1) | 25.5% |
| 18 | Oak Hill CDP (east-northeast) | 25% |
| 19 | Portland city (northeast 1) | 25% |
| 20 | Bridgton CDP (north-northeast) | 24.4% |
| 21 | Portland city (west-southwest 1) | 24.2% |
| 22 | Cousins Island CDP | 23.2% |
| 23 | Naples CDP (northeast) | 23.1% |
| 24 | Portland city (east-northeast 1) | 23.1% |
| 25 | Cumberland Center CDP (west-northwest) | 23% |
| 26 | Portland city (south-southeast 2) | 22.9% |
| 27 | South Portland city (northeast 2) | 22.6% |
| 28 | South Portland city (northeast 1) | 22.5% |
| 29 | Unincorporated (east 1) | 22.1% |
| 30 | Brunswick CDP (northwest) | 21.9% |
| 31 | Unincorporated (northwest 2) | 21.6% |
| 32 | Unincorporated (southeast 2) | 21.5% |
| 33 | Westbrook city (south) | 21.4% |
| 34 | Oak Hill CDP (south-southeast) | 21.2% |
| 35 | Gorham CDP (east) | 20.5% |
| 36 | Portland city (west-southwest 3) | 20.5% |
| 37 | Brunswick CDP (west-northwest) | 20.2% |
| 38 | Portland city (south-southwest 2) | 20.1% |
| 39 | Portland city (northwest 2) | 19.6% |
| 40 | South Portland city (east-southeast) | 19.5% |
| 41 | Little Falls CDP | 18.5% |
| 42 | Gorham CDP (west) | 18.4% |
| 43 | Unincorporated (northeast 1) | 18.1% |
| 44 | North Windham CDP (south-southwest) | 18% |
| 45 | Unincorporated (east-northeast) | 17.9% |
| 46 | Portland city (west-southwest 2) | 17.8% |
| 47 | Unincorporated (east 2) | 17.6% |
| 48 | Unincorporated (northeast 2) | 17.5% |
| 49 | Naples CDP (southwest) | 17.2% |
| 50 | North Windham CDP (east-southeast) | 17.2% |
| 51 | Freeport CDP | 17.1% |
| 52 | Portland city (west 2) | 16.9% |
| 53 | North Windham CDP (northwest) | 16.8% |
| 54 | Portland city (south-southeast 1) | 16.5% |
| 55 | Unincorporated (west-southwest) | 16.3% |
| 56 | South Portland city (south-southwest) | 16% |
| 57 | Yarmouth CDP | 16% |
| 58 | Unincorporated (north) | 15.8% |
| 59 | South Portland city (east-northeast) | 15.5% |
| 60 | Unincorporated (south) | 15% |
| 61 | Westbrook city (north) | 15% |
| 62 | Oak Hill CDP (west-northwest) | 14.5% |
| 63 | Portland city (south 2) | 14.2% |
| 64 | Unincorporated (west) | 13.5% |
| 65 | Unincorporated (northwest 3) | 13.1% |
| 66 | Westbrook city (east-southeast) | 13.1% |
| 67 | Portland city (northwest 1) | 12.7% |
| 68 | Westbrook city (north-northwest) | 12.6% |
| 69 | South Windham CDP | 12% |
| 70 | Portland city (north) | 11.9% |
| 71 | Brunswick CDP (east-northeast) | 11.6% |
| 72 | Unincorporated (west-northwest 1) | 11.3% |
| 73 | Gray CDP | 11.2% |
| 74 | Standish CDP | 11.1% |
| 75 | Steep Falls CDP | 9.9% |
| 76 | South Portland city (west-southwest) | 9.7% |
| 77 | Brunswick CDP (north) | 8.9% |
| 78 | Portland city (west-northwest 2) | 8.5% |
| 79 | Bridgton CDP (south-southwest) | 8.2% |
| 80 | South Portland city (west) | 6.2% |