| 1 | Gales Ferry CDP (south-southeast) | 38.8% |
| 2 | Stonington borough (south-southwest) | 28.8% |
| 3 | Mystic CDP (east-southeast) | 25.8% |
| 4 | Niantic CDP (north-northwest) | 23.3% |
| 5 | South Windham CDP (south-southwest) | 21.1% |
| 6 | Niantic CDP (west-northwest) | 20.7% |
| 7 | Waterford CDP (north) | 20.6% |
| 8 | Niantic CDP (south-southeast) | 19.6% |
| 9 | Colchester CDP (east) | 18.5% |
| 10 | Niantic CDP (south-southwest) | 18.1% |
| 11 | Oxoboxo River CDP (south-southeast) | 17.8% |
| 12 | Oxoboxo River CDP (west) | 16.4% |
| 13 | Long Hill CDP (east-southeast) | 16.3% |
| 14 | Colchester CDP (west-southwest) | 15.8% |
| 15 | Waterford CDP (east-northeast) | 15.6% |
| 16 | Mystic CDP (west-northwest) | 14.9% |
| 17 | Poquonock Bridge CDP | 14.2% |
| 18 | Conning Towers-Nautilus Park CDP (northeast) | 13% |
| 19 | Groton city (south-southeast) | 13% |
| 20 | Norwich city (north-northwest) | 13% |
| 21 | Groton Long Point borough | 12.7% |
| 22 | Waterford CDP (east) | 12.6% |
| 23 | Stonington borough (northwest) | 12.2% |
| 24 | Norwich city (north-northeast) | 12% |
| 25 | Old Mystic CDP | 11.2% |
| 26 | Jewett City borough (east-southeast) | 11.1% |
| 27 | Colchester CDP (north-northwest) | 10.6% |
| 28 | Norwich city (south-southeast 2) | 10.4% |
| 29 | New London city (east-southeast) | 10.1% |
| 30 | Gales Ferry CDP (northeast) | 9.5% |
| 31 | Mashantucket CDP (northwest) | 9.5% |
| 32 | Pawcatuck CDP | 9.5% |
| 33 | Niantic CDP (north) | 9.3% |
| 34 | Stonington borough (east-southeast) | 8.8% |
| 35 | New London city (north) | 8.4% |
| 36 | Niantic CDP (east-northeast) | 8.2% |
| 37 | Conning Towers-Nautilus Park CDP (southwest) | 7.8% |
| 38 | New London city (southwest) | 7.5% |
| 39 | Oxoboxo River CDP (north-northwest) | 7.3% |
| 40 | Jewett City borough (west-northwest) | 7.2% |
| 41 | Baltic CDP (east) | 7% |
| 42 | Willimantic CDP (east-southeast) | 6.6% |
| 43 | Mashantucket CDP (east) | 6.5% |
| 44 | Oxoboxo River CDP (west-southwest) | 6.5% |
| 45 | Willimantic CDP (northeast) | 6.5% |
| 46 | Oxoboxo River CDP (east-southeast) | 6.4% |
| 47 | Waterford CDP (west-southwest) | 6.4% |
| 48 | Willimantic CDP (west) | 6.4% |
| 49 | Baltic CDP (west-southwest) | 6.2% |
| 50 | South Windham CDP (northeast) | 6.1% |
| 51 | Gales Ferry CDP (south-southwest) | 5.8% |
| 52 | Norwich city (south) | 5.7% |
| 53 | Long Hill CDP (west-northwest) | 5.2% |
| 54 | Baltic CDP (north) | 5.1% |
| 55 | Mashantucket CDP (west) | 4.8% |
| 56 | Waterford CDP (west-northwest) | 4.8% |
| 57 | Norwich city (west-northwest) | 4.3% |
| 58 | Mashantucket CDP (south) | 4.2% |
| 59 | Norwich city (south-southwest) | 4% |
| 60 | South Windham CDP (northwest) | 3.9% |
| 61 | Norwich city (south-southeast 1) | 3.4% |
| 62 | South Windham CDP (north) | 3.4% |
| 63 | Waterford CDP (south-southeast) | 3.4% |
| 64 | Gales Ferry CDP (north-northwest) | 2.9% |
| 65 | Oxoboxo River CDP (east-northeast) | 2.7% |
| 66 | Norwich city (east-northeast) | 2.2% |
| 67 | Groton city (north-northwest) | 1.4% |