| 1 | Groton Long Point borough | 29.5% |
| 2 | Norwich city (south-southeast 2) | 25.6% |
| 3 | Niantic CDP (south-southeast) | 25.1% |
| 4 | Mystic CDP (east-southeast) | 22.2% |
| 5 | Niantic CDP (south-southwest) | 21.7% |
| 6 | Niantic CDP (east-northeast) | 17.3% |
| 7 | Stonington borough (south-southwest) | 16.6% |
| 8 | Norwich city (east-northeast) | 15.7% |
| 9 | Gales Ferry CDP (northeast) | 14% |
| 10 | Mashantucket CDP (west) | 13.4% |
| 11 | Norwich city (south-southeast 1) | 12.8% |
| 12 | Groton city (south-southeast) | 12.3% |
| 13 | South Windham CDP (south-southwest) | 12.1% |
| 14 | Norwich city (south) | 11.3% |
| 15 | Norwich city (north-northeast) | 11% |
| 16 | Gales Ferry CDP (north-northwest) | 10.7% |
| 17 | Waterford CDP (south-southeast) | 10% |
| 18 | New London city (southwest) | 9.9% |
| 19 | Mashantucket CDP (east) | 9.7% |
| 20 | Mashantucket CDP (northwest) | 9.7% |
| 21 | Long Hill CDP (west-northwest) | 9.6% |
| 22 | Baltic CDP (north) | 9.5% |
| 23 | Oxoboxo River CDP (north-northwest) | 9.5% |
| 24 | Stonington borough (northwest) | 9.5% |
| 25 | Waterford CDP (west-northwest) | 8.9% |
| 26 | Stonington borough (east-southeast) | 8.5% |
| 27 | Groton city (north-northwest) | 8.2% |
| 28 | Old Mystic CDP | 8.2% |
| 29 | Mystic CDP (west-northwest) | 8.1% |
| 30 | Conning Towers-Nautilus Park CDP (southwest) | 7.8% |
| 31 | Waterford CDP (east) | 7.7% |
| 32 | Poquonock Bridge CDP | 7.6% |
| 33 | New London city (east-southeast) | 7.5% |
| 34 | Long Hill CDP (east-southeast) | 7.3% |
| 35 | Willimantic CDP (west) | 7.2% |
| 36 | Gales Ferry CDP (south-southwest) | 6.9% |
| 37 | Oxoboxo River CDP (east-northeast) | 6.9% |
| 38 | Niantic CDP (north) | 6.6% |
| 39 | Waterford CDP (north) | 6.5% |
| 40 | Jewett City borough (east-southeast) | 6.3% |
| 41 | Norwich city (south-southwest) | 6.3% |
| 42 | Pawcatuck CDP | 6.3% |
| 43 | Oxoboxo River CDP (west-southwest) | 5.9% |
| 44 | Willimantic CDP (east-southeast) | 5.9% |
| 45 | Conning Towers-Nautilus Park CDP (northeast) | 5.7% |
| 46 | Oxoboxo River CDP (south-southeast) | 5.6% |
| 47 | Waterford CDP (east-northeast) | 5.4% |
| 48 | Willimantic CDP (northeast) | 5.4% |
| 49 | Colchester CDP (east) | 5% |
| 50 | Waterford CDP (west-southwest) | 4.8% |
| 51 | New London city (north) | 4.7% |
| 52 | South Windham CDP (north) | 4.7% |
| 53 | Baltic CDP (east) | 4.3% |
| 54 | Colchester CDP (north-northwest) | 4% |
| 55 | Baltic CDP (west-southwest) | 3.8% |
| 56 | Colchester CDP (west-southwest) | 3.8% |
| 57 | Jewett City borough (west-northwest) | 3.8% |
| 58 | Oxoboxo River CDP (west) | 3.7% |
| 59 | South Windham CDP (northwest) | 3.6% |
| 60 | Niantic CDP (north-northwest) | 3.1% |
| 61 | South Windham CDP (northeast) | 2.5% |
| 62 | Mashantucket CDP (south) | 2.4% |
| 63 | Norwich city (west-northwest) | 2.1% |
| 64 | Norwich city (north-northwest) | 0.9% |
| 65 | Niantic CDP (west-northwest) | 0.4% |
| 66 | Oxoboxo River CDP (east-southeast) | 0% |