| 1 | Portland city (south 2) | 25.9% |
| 2 | Westbrook city (east-southeast) | 24.1% |
| 3 | Portland city (south-southeast 1) | 23% |
| 4 | Bridgton CDP (north-northeast) | 22.5% |
| 5 | Portland city (south-southeast 2) | 21.6% |
| 6 | Unincorporated (northwest 2) | 17.1% |
| 7 | Portland city (south 1) | 16.9% |
| 8 | Portland city (west-northwest 2) | 14.6% |
| 9 | Portland city (east-northeast 2) | 13.5% |
| 10 | Yarmouth CDP | 13.4% |
| 11 | Brunswick CDP (east-northeast) | 13.2% |
| 12 | Portland city (south-southwest 2) | 13% |
| 13 | Portland city (west-southwest 2) | 12.9% |
| 14 | Casco CDP | 12.8% |
| 15 | Portland city (northeast 2) | 12.8% |
| 16 | Bridgton CDP (south-southwest) | 12.6% |
| 17 | Naples CDP (northeast) | 12.5% |
| 18 | Unincorporated (west) | 12.4% |
| 19 | Steep Falls CDP | 11.6% |
| 20 | Portland city (west-southwest 3) | 10.8% |
| 21 | Portland city (east-northeast 1) | 10.6% |
| 22 | Freeport CDP | 10.1% |
| 23 | Portland city (south-southwest 1) | 9.8% |
| 24 | Portland city (north) | 9.5% |
| 25 | South Portland city (west) | 9.4% |
| 26 | Portland city (northwest 1) | 9.3% |
| 27 | Westbrook city (north-northwest) | 8.4% |
| 28 | South Portland city (northeast 2) | 8.3% |
| 29 | Portland city (west 2) | 8% |
| 30 | Standish CDP | 7.7% |
| 31 | Unincorporated (west-northwest 1) | 7.7% |
| 32 | Gorham CDP (east) | 6.3% |
| 33 | Portland city (west-southwest 1) | 6.3% |
| 34 | Unincorporated (northeast 1) | 6.3% |
| 35 | Cumberland Center CDP (east-southeast) | 6.2% |
| 36 | South Portland city (east-northeast) | 6.2% |
| 37 | South Portland city (northeast 1) | 6% |
| 38 | Unincorporated (southeast 2) | 6% |
| 39 | Unincorporated (west-northwest 2) | 5.8% |
| 40 | Naples CDP (southwest) | 5.7% |
| 41 | Portland city (northeast 1) | 5.6% |
| 42 | Portland city (northwest 2) | 5.5% |
| 43 | Unincorporated (east 1) | 5.5% |
| 44 | Brunswick CDP (northwest) | 5.4% |
| 45 | Brunswick CDP (south) | 5.4% |
| 46 | Unincorporated (east 2) | 5.4% |
| 47 | Westbrook city (south) | 5.3% |
| 48 | North Windham CDP (south-southwest) | 5% |
| 49 | Brunswick CDP (north) | 4.9% |
| 50 | Westbrook city (north) | 4.9% |
| 51 | Westbrook city (southwest) | 4.8% |
| 52 | South Portland city (south-southwest) | 4.6% |
| 53 | Brunswick CDP (west-northwest) | 4.4% |
| 54 | South Portland city (east-southeast) | 4.3% |
| 55 | Portland city (west-northwest 1) | 4.1% |
| 56 | Unincorporated (northwest 3) | 4.1% |
| 57 | Oak Hill CDP (west-northwest) | 4% |
| 58 | Portland city (west 1) | 4% |
| 59 | South Portland city (west-southwest) | 3.9% |
| 60 | Little Falls CDP | 3.8% |
| 61 | Unincorporated (west-southwest) | 3.6% |
| 62 | Gray CDP | 3.4% |
| 63 | Oak Hill CDP (east-northeast) | 3.4% |
| 64 | Falmouth CDP | 3.2% |
| 65 | Dunstan CDP | 3% |
| 66 | Unincorporated (northwest 1) | 3% |
| 67 | Unincorporated (southeast 1) | 3% |
| 68 | Unincorporated (south-southeast 2) | 2.9% |
| 69 | North Windham CDP (east-southeast) | 2.8% |
| 70 | Unincorporated (east-northeast) | 2.7% |
| 71 | Unincorporated (north) | 2.6% |
| 72 | Unincorporated (south) | 2.5% |
| 73 | North Windham CDP (northwest) | 2.2% |
| 74 | Cousins Island CDP | 2.1% |
| 75 | Unincorporated (south-southeast 1) | 2.1% |
| 76 | Cumberland Center CDP (west-northwest) | 1.8% |
| 77 | Gorham CDP (west) | 1.7% |
| 78 | South Windham CDP | 1.7% |
| 79 | Oak Hill CDP (south-southeast) | 1.5% |
| 80 | Unincorporated (northeast 2) | 1.5% |