| 1 | Portland CDP (northwest) | 28% |
| 2 | Old Saybrook Center CDP (north-northwest) | 27.6% |
| 3 | Old Saybrook Center CDP (southwest) | 27.6% |
| 4 | Portland CDP (west-southwest) | 25.6% |
| 5 | Essex Village CDP (north-northeast) | 25.2% |
| 6 | Essex Village CDP (south-southwest) | 24.7% |
| 7 | Middletown city (east-southeast 1) | 22.1% |
| 8 | Chester Center CDP (southwest) | 19.6% |
| 9 | Durham CDP (south-southeast) | 18.6% |
| 10 | Old Saybrook Center CDP (northeast) | 18.6% |
| 11 | Old Saybrook Center CDP (east-southeast) | 18.3% |
| 12 | Saybrook Manor CDP | 18% |
| 13 | Middletown city (east-southeast 2) | 17.2% |
| 14 | Westbrook Center CDP (west-southwest) | 16.4% |
| 15 | Higganum CDP (east-northeast) | 16.2% |
| 16 | Westbrook Center CDP (northwest) | 16.2% |
| 17 | Moodus CDP (west-northwest) | 16.1% |
| 18 | Portland CDP (south-southwest) | 16% |
| 19 | Deep River Center CDP (southeast) | 15.9% |
| 20 | Chester Center CDP (northeast) | 15.4% |
| 21 | Portland CDP (east-southeast) | 15.3% |
| 22 | Portland CDP (west-northwest) | 14.7% |
| 23 | Durham CDP (east-southeast) | 14.1% |
| 24 | Portland CDP (east-northeast) | 13.7% |
| 25 | Middletown city (west) | 13.5% |
| 26 | Moodus CDP (east-southeast) | 12.8% |
| 27 | Clinton CDP (southeast) | 12.6% |
| 28 | Middletown city (east) | 12.3% |
| 29 | Lake Pocotopaug CDP | 12.1% |
| 30 | Durham CDP (south-southwest) | 11.7% |
| 31 | East Hampton CDP (southwest) | 11.5% |
| 32 | Middletown city (northwest) | 11.5% |
| 33 | Durham CDP (northwest) | 11.3% |
| 34 | Portland CDP (north-northwest) | 11.3% |
| 35 | Clinton CDP (west-northwest) | 10.9% |
| 36 | Middletown city (south) | 10.8% |
| 37 | Deep River Center CDP (northwest) | 9.7% |
| 38 | Clinton CDP (south) | 8.5% |
| 39 | East Hampton CDP (northeast) | 8.5% |
| 40 | Higganum CDP (west-southwest) | 7.7% |
| 41 | Clinton CDP (north) | 7.5% |
| 42 | Portland CDP (southeast) | 7.4% |
| 43 | Middletown city (northeast) | 7.3% |
| 44 | Durham CDP (north-northwest) | 5.2% |