| 1 | Naugatuck borough (east-northeast 1) | 7,675 |
| 2 | Terryville CDP (southeast) | 7,614 |
| 3 | Watertown CDP (northwest) | 7,453 |
| 4 | Cheshire Village CDP (south-southeast) | 7,142 |
| 5 | Naugatuck borough (north-northwest) | 7,070 |
| 6 | Naugatuck borough (south-southwest) | 6,875 |
| 7 | Naugatuck borough (north-northeast 3) | 6,601 |
| 8 | Cheshire Village CDP (north-northwest) | 6,599 |
| 9 | Naugatuck borough (west) | 6,555 |
| 10 | Naugatuck borough (north-northeast 1) | 6,484 |
| 11 | Cheshire Village CDP (southeast) | 6,474 |
| 12 | Derby city (east-southeast) | 6,426 |
| 13 | Shelton city (east-northeast) | 6,269 |
| 14 | Oakville CDP (southeast) | 6,226 |
| 15 | Naugatuck borough (south-southeast) | 6,089 |
| 16 | Naugatuck borough (west-southwest) | 6,054 |
| 17 | Naugatuck borough (southwest) | 5,995 |
| 18 | Derby city (west-northwest) | 5,933 |
| 19 | Cheshire Village CDP (north-northeast) | 5,930 |
| 20 | Bristol city (northeast) | 5,920 |
| 21 | Cheshire Village CDP (west-northwest 3) | 5,912 |
| 22 | Oakville CDP (northwest) | 5,848 |
| 23 | Ansonia city (south-southeast 2) | 5,843 |
| 24 | Cheshire Village CDP (south-southwest) | 5,710 |
| 25 | Woodbury Center CDP (northwest) | 5,690 |
| 26 | Waterbury city (west) | 5,679 |
| 27 | Watertown CDP (southeast) | 5,555 |
| 28 | Bristol city (south-southwest 2) | 5,424 |
| 29 | Thomaston CDP (southeast) | 5,384 |
| 30 | Derby city (southeast) | 5,322 |
| 31 | Thomaston CDP (west) | 5,277 |
| 32 | Cheshire Village CDP (west-northwest 1) | 5,265 |
| 33 | Derby city (west) | 5,200 |
| 34 | Shelton city (west-northwest) | 5,166 |
| 35 | Cheshire Village CDP (east-northeast) | 5,127 |
| 36 | Ansonia city (north) | 5,110 |
| 37 | Derby city (north) | 5,105 |
| 38 | Shelton city (west-southwest) | 5,084 |
| 39 | Bristol city (north-northwest) | 5,078 |
| 40 | Waterbury city (east-southeast 2) | 5,068 |
| 41 | Shelton city (east-southeast) | 5,003 |
| 42 | Oakville CDP (north-northwest 1) | 4,875 |
| 43 | Waterbury city (northeast) | 4,867 |
| 44 | Naugatuck borough (north-northeast 2) | 4,862 |
| 45 | Heritage Village CDP (north-northeast) | 4,773 |
| 46 | Naugatuck borough (north) | 4,759 |
| 47 | Terryville CDP (north-northeast) | 4,741 |
| 48 | Thomaston CDP (east) | 4,711 |
| 49 | Oakville CDP (south-southwest) | 4,697 |
| 50 | Bristol city (north-northeast) | 4,482 |
| 51 | Waterbury city (south-southwest 1) | 4,410 |
| 52 | Waterbury city (north-northwest) | 4,314 |
| 53 | Bristol city (east-northeast) | 4,285 |
| 54 | Naugatuck borough (south) | 4,277 |
| 55 | Woodbury Center CDP (south-southeast) | 4,271 |
| 56 | Oakville CDP (north-northwest 2) | 4,259 |
| 57 | Ansonia city (south-southeast 1) | 4,237 |
| 58 | Bristol city (south-southwest 1) | 4,209 |
| 59 | Cheshire Village CDP (east) | 4,179 |
| 60 | Oakville CDP (south-southeast 1) | 4,156 |
| 61 | Woodbury Center CDP (west) | 4,097 |
| 62 | Bristol city (north) | 4,093 |
| 63 | Bristol city (southeast) | 4,074 |
| 64 | Terryville CDP (west) | 4,062 |
| 65 | Derby city (northwest) | 3,896 |
| 66 | Waterbury city (south 1) | 3,876 |
| 67 | Waterbury city (southeast 2) | 3,852 |
| 68 | Naugatuck borough (east) | 3,850 |
| 69 | Bristol city (southwest) | 3,811 |
| 70 | Ansonia city (southwest) | 3,766 |
| 71 | Waterbury city (north 2) | 3,753 |
| 72 | Naugatuck borough (east-northeast 2) | 3,704 |
| 73 | Waterbury city (north 1) | 3,657 |
| 74 | Derby city (south-southeast) | 3,521 |
| 75 | Ansonia city (north-northwest) | 3,516 |
| 76 | Waterbury city (south 2) | 3,479 |
| 77 | Cheshire Village CDP (west-northwest 2) | 3,466 |
| 78 | Bethlehem Village CDP | 3,398 |
| 79 | Bristol city (northwest) | 3,337 |
| 80 | Oakville CDP (north 2) | 3,315 |
| 81 | Shelton city (south-southeast) | 3,195 |
| 82 | Bristol city (east-southeast) | 3,068 |
| 83 | Woodbury Center CDP (east) | 3,039 |
| 84 | Bristol city (west) | 3,035 |
| 85 | Terryville CDP (southwest) | 2,942 |
| 86 | Waterbury city (south-southeast) | 2,836 |
| 87 | Waterbury city (northwest 2) | 2,807 |
| 88 | Waterbury city (south-southwest 2) | 2,771 |
| 89 | Waterbury city (southeast 1) | 2,735 |
| 90 | Oakville CDP (north 1) | 2,721 |
| 91 | Shelton city (north-northwest) | 2,642 |
| 92 | Oakville CDP (south-southeast 2) | 2,546 |
| 93 | Heritage Village CDP (west-southwest) | 2,450 |
| 94 | Heritage Village CDP (east) | 2,425 |
| 95 | Waterbury city (northwest 1) | 2,367 |
| 96 | Waterbury city (east-southeast 1) | 2,237 |
| 97 | Thomaston CDP (northwest) | 2,199 |
| 98 | Terryville CDP (east) | 2,167 |