| 06001 | — | Connecticut | 18,558 | 44.8 | 23.77 sq mi |
| 06002 | Bloomfield, Connecticut | Connecticut | 20,443 | 47.3 | 26.25 sq mi |
| 06006 | — | Connecticut | — | — | — |
| 06010 | Bristol, Connecticut | Connecticut | 61,207 | 40.3 | 26.82 sq mi |
| 06011 | Bristol, Connecticut | Connecticut | — | — | — |
| 06013 | Burlington, Connecticut | Connecticut | 9,436 | 42.5 | 30.44 sq mi |
| 06016 | Broad Brook, Connecticut | Connecticut | 6,387 | 40.6 | 15.03 sq mi |
| 06018 | Canaan, Connecticut | Connecticut | 2,819 | 45 | 11.98 sq mi |
| 06019 | North Canton | Connecticut | 10,385 | 43.5 | 23.4 sq mi |
| 06020 | — | Connecticut | 3 | 49.8 | 319,528 sq ft |
| 06021 | Colebrook, Connecticut | Connecticut | 321 | 44.1 | 5.69 sq mi |
| 06022 | Collinsville, Connecticut | Connecticut | 176 | 46.6 | 1.608 sq mi |
| 06023 | East Berlin, Connecticut | Connecticut | 1,296 | 45.7 | 0.917 sq mi |
| 06024 | North Canaan, Connecticut | Connecticut | 716 | 42.2 | 7.99 sq mi |
| 06025 | East Glastonbury | Connecticut | — | — | — |
| 06026 | — | Connecticut | 5,246 | 42.7 | 16.93 sq mi |
| 06027 | East Hartland | Connecticut | 1,442 | 45.4 | 16.44 sq mi |
| 06028 | East Windsor Hill | Connecticut | — | — | — |
| 06029 | Ellington, Connecticut | Connecticut | 16,544 | 41.4 | 34.34 sq mi |
| 06030 | Farmington, Connecticut | Connecticut | — | — | — |
| 06031 | Falls Village, Connecticut | Connecticut | 1,328 | 48 | 38.72 sq mi |
| 06032 | Farmington, Connecticut | Connecticut | 18,252 | 44.7 | 23.42 sq mi |
| 06033 | East Glastonbury | Connecticut | 29,130 | 43 | 34.9 sq mi |
| 06034 | — | Connecticut | — | — | — |
| 06035 | — | Connecticut | 7,754 | 44.9 | 15.47 sq mi |
| 06037 | Berlin, Connecticut | Connecticut | 19,425 | 45 | 26.06 sq mi |
| 06039 | Lakeville, Connecticut | Connecticut | 2,036 | 50.7 | 22.02 sq mi |
| 06040 | — | Connecticut | 35,348 | 37.8 | 17.1 sq mi |
| 06041 | Mayberry Village | Connecticut | — | — | — |
| 06042 | Talcottville | Connecticut | 23,674 | 37.5 | 10.55 sq mi |
| 06043 | Bolton, Connecticut | Connecticut | 5,187 | 45.5 | 14.71 sq mi |
| 06045 | Manchester, Connecticut | Connecticut | — | — | — |
| 06050 | New Britain, Connecticut | Connecticut | — | — | — |
| 06051 | New Britain, Connecticut | Connecticut | 30,430 | 31.2 | 4.097 sq mi |
| 06052 | New Britain, Connecticut | Connecticut | 8,300 | 39.5 | 2.573 sq mi |
| 06053 | New Britain, Connecticut | Connecticut | 34,297 | 33.5 | 8.03 sq mi |
| 06057 | — | Connecticut | 6,789 | 44.2 | 37.59 sq mi |
| 06058 | — | Connecticut | 1,818 | 47.5 | 51.98 sq mi |
| 06059 | North Canton | Connecticut | 2 | — | 4.055 sq mi |
| 06060 | North Granby, Connecticut | Connecticut | 2,641 | 42.8 | 12.07 sq mi |
| 06061 | Pine Meadow | Connecticut | 137 | 41.8 | 0.141 sq mi |
| 06062 | — | Connecticut | 17,673 | 41.8 | 8.78 sq mi |
| 06063 | — | Connecticut | 3,479 | 44.7 | 31.05 sq mi |
| 06064 | — | Connecticut | — | — | — |
| 06065 | Riverton | Connecticut | 844 | 44.7 | 9.64 sq mi |
| 06066 | Rockville, Connecticut | Connecticut | 30,193 | 40 | 18.08 sq mi |
| 06067 | Rocky Hill, Connecticut | Connecticut | 19,908 | 44 | 13.83 sq mi |
| 06068 | — | Connecticut | 1,559 | 55.4 | 32.95 sq mi |
| 06069 | Sharon Valley | Connecticut | 2,536 | 51.6 | 50.72 sq mi |
| 06070 | — | Connecticut | 15,166 | 43.7 | 22.11 sq mi |
| 06071 | Somers, Connecticut | Connecticut | 13,243 | 42.1 | 29.03 sq mi |
| 06072 | Somersville | Connecticut | — | — | — |
| 06073 | Glastonbury, Connecticut | Connecticut | 5,873 | 43.6 | 17.27 sq mi |
| 06074 | — | Connecticut | 26,179 | 41.9 | 28.68 sq mi |
| 06075 | Staffordville | Connecticut | — | — | — |
| 06076 | Stafford, Connecticut | Connecticut | 13,444 | 41.9 | 87.32 sq mi |
| 06077 | Staffordville | Connecticut | — | — | — |
| 06078 | — | Connecticut | 12,334 | 40.6 | 26.18 sq mi |
| 06079 | Taconic | Connecticut | — | — | — |
| 06080 | — | Connecticut | — | — | — |
| 06081 | Tariffville | Connecticut | 1,351 | 43.6 | 0.747 sq mi |
| 06082 | — | Connecticut | 43,985 | 40.2 | 34.19 sq mi |
| 06083 | — | Connecticut | — | — | — |
| 06084 | Tolland, Connecticut | Connecticut | 15,766 | 41.7 | 40.56 sq mi |
| 06085 | Unionville | Connecticut | 7,314 | 42.2 | 4.924 sq mi |
| 06087 | Unionville | Connecticut | — | — | — |
| 06088 | — | Connecticut | 4,998 | 45.6 | 11.74 sq mi |
| 06089 | Weatogue, Connecticut | Connecticut | 2,827 | 42.9 | 2.715 sq mi |
| 06090 | West Granby | Connecticut | 1,241 | 45.4 | 13.54 sq mi |
| 06091 | West Hartland | Connecticut | 159 | 47.6 | 11.95 sq mi |
| 06092 | West Simsbury, Connecticut | Connecticut | 4,153 | 43.7 | 8.65 sq mi |
| 06093 | West Suffield | Connecticut | 3,172 | 45.8 | 16.7 sq mi |
| 06094 | Winchester, Connecticut | Connecticut | — | — | — |
| 06095 | — | Connecticut | 29,684 | 42.8 | 31.04 sq mi |
| 06096 | Windsor, Connecticut | Connecticut | 12,865 | 42.9 | 9.95 sq mi |
| 06098 | Winsted, Connecticut | Connecticut | 12,527 | 44.3 | 59.14 sq mi |
| 06101 | Hartford, Connecticut | Connecticut | — | — | — |
| 06102 | Hartford, Connecticut | Connecticut | — | — | — |
| 06103 | Hartford, Connecticut | Connecticut | 1,724 | 34.1 | 0.497 sq mi |
| 06104 | Hartford, Connecticut | Connecticut | — | — | — |
| 06105 | Hartford, Connecticut | Connecticut | 19,008 | 31.7 | 2.338 sq mi |
| 06106 | Hartford, Connecticut | Connecticut | 39,882 | 29.8 | 4.343 sq mi |
| 06107 | West Hartford, Connecticut | Connecticut | 19,067 | 43.6 | 6.73 sq mi |
| 06108 | East Hartford, Connecticut | Connecticut | 24,436 | 34.6 | 8.58 sq mi |
| 06109 | Wethersfield, Connecticut | Connecticut | 27,463 | 45.4 | 13.1 sq mi |
| 06110 | West Hartford, Connecticut | Connecticut | 13,117 | 39.2 | 3.328 sq mi |
| 06111 | Newington, Connecticut | Connecticut | 30,958 | 43.3 | 13.14 sq mi |
| 06112 | Hartford, Connecticut | Connecticut | 23,599 | 30 | 2.742 sq mi |
| 06114 | Hartford, Connecticut | Connecticut | 27,841 | 30.9 | 4.191 sq mi |
| 06115 | Hartford, Connecticut | Connecticut | — | — | — |
| 06117 | West Hartford, Connecticut | Connecticut | 17,180 | 44.8 | 10.19 sq mi |
| 06118 | East Hartford, Connecticut | Connecticut | 26,928 | 40.4 | 10.19 sq mi |
| 06119 | West Hartford, Connecticut | Connecticut | 15,400 | 37.6 | 2.044 sq mi |
| 06120 | Hartford, Connecticut | Connecticut | 12,648 | 28.7 | 3.945 sq mi |
| 06123 | Hartford, Connecticut | Connecticut | — | — | — |
| 06126 | Hartford, Connecticut | Connecticut | — | — | — |
| 06127 | West Hartford, Connecticut | Connecticut | — | — | — |
| 06128 | East Hartford, Connecticut | Connecticut | — | — | — |
| 06129 | Wethersfield, Connecticut | Connecticut | — | — | — |
| 06131 | Newington, Connecticut | Connecticut | — | — | — |
| 06132 | Hartford, Connecticut | Connecticut | — | — | — |
| 06133 | West Hartford, Connecticut | Connecticut | — | — | — |
| 06134 | Hartford, Connecticut | Connecticut | — | — | — |
| 06137 | West Hartford, Connecticut | Connecticut | — | — | — |
| 06138 | East Hartford, Connecticut | Connecticut | — | — | — |
| 06140 | Hartford, Connecticut | Connecticut | — | — | — |
| 06141 | Hartford, Connecticut | Connecticut | — | — | — |
| 06142 | Hartford, Connecticut | Connecticut | — | — | — |
| 06143 | Hartford, Connecticut | Connecticut | — | — | — |
| 06144 | Hartford, Connecticut | Connecticut | — | — | — |
| 06145 | Hartford, Connecticut | Connecticut | — | — | — |
| 06146 | Hartford, Connecticut | Connecticut | — | — | — |
| 06147 | Hartford, Connecticut | Connecticut | — | — | — |
| 06150 | Hartford, Connecticut | Connecticut | — | — | — |
| 06151 | Hartford, Connecticut | Connecticut | — | — | — |
| 06152 | Hartford, Connecticut | Connecticut | — | — | — |
| 06153 | Hartford, Connecticut | Connecticut | — | — | — |
| 06154 | Hartford, Connecticut | Connecticut | — | — | — |
| 06155 | Hartford, Connecticut | Connecticut | — | — | — |
| 06156 | Hartford, Connecticut | Connecticut | — | — | — |
| 06160 | Hartford, Connecticut | Connecticut | 117 | 30.3 | 1,487,641 sq ft |
| 06161 | Hartford, Connecticut | Connecticut | — | — | — |
| 06167 | Hartford, Connecticut | Connecticut | — | — | — |
| 06176 | Hartford, Connecticut | Connecticut | — | — | — |
| 06180 | Hartford, Connecticut | Connecticut | — | — | — |
| 06183 | Hartford, Connecticut | Connecticut | — | — | — |
| 06199 | Hartford, Connecticut | Connecticut | — | — | — |
| 06226 | Willimantic, Connecticut | Connecticut | 20,129 | 27.4 | 7.35 sq mi |
| 06230 | Abington | Connecticut | — | — | — |
| 06231 | Amston | Connecticut | 4,282 | 41.3 | 16.05 sq mi |
| 06232 | Andover, Connecticut | Connecticut | 3,600 | 42.8 | 15.69 sq mi |
| 06233 | Ballouville | Connecticut | — | — | — |
| 06234 | Brooklyn, Connecticut | Connecticut | 8,528 | 41.1 | 30.73 sq mi |
| 06235 | — | Connecticut | 2,304 | 42.9 | 19.47 sq mi |
| 06237 | Columbia, Connecticut | Connecticut | 5,707 | 45.6 | 22.18 sq mi |
| 06238 | — | Connecticut | 13,018 | 41.2 | 38.05 sq mi |
| 06239 | Danielson, Connecticut | Connecticut | 11,418 | 39.5 | 23.24 sq mi |
| 06241 | Dayville | Connecticut | 6,903 | 39.7 | 28.47 sq mi |
| 06242 | — | Connecticut | 1,489 | 44.5 | 26.39 sq mi |
| 06243 | East Killingly | Connecticut | 71 | 36.6 | 0.444 sq mi |
| 06244 | East Woodstock | Connecticut | — | — | — |
| 06245 | Fabyan | Connecticut | — | — | — |
| 06246 | Grosvenor Dale | Connecticut | — | — | — |
| 06247 | — | Connecticut | 2,902 | 44.3 | 34.44 sq mi |
| 06248 | Hebron, Connecticut | Connecticut | 5,748 | 42.1 | 21.2 sq mi |
| 06249 | Lebanon, Connecticut | Connecticut | 7,478 | 42.6 | 55.23 sq mi |
| 06250 | Mansfield Center, Connecticut | Connecticut | 5,451 | 37.9 | 17.74 sq mi |
| 06251 | Mansfield, Connecticut | Connecticut | — | — | — |
| 06254 | North Franklin | Connecticut | 1,965 | 43.6 | 19.58 sq mi |
| 06255 | North Grosvenor Dale, Connecticut | Connecticut | 4,941 | 42 | 23.46 sq mi |
| 06256 | North Windham | Connecticut | 2,548 | 41.9 | 7.75 sq mi |
| 06258 | — | Connecticut | — | — | — |
| 06259 | Pomfret Center | Connecticut | 4,635 | 42.1 | 41.84 sq mi |
| 06260 | — | Connecticut | 9,925 | 40.1 | 20.11 sq mi |
| 06262 | Quinebaug, Connecticut | Connecticut | 655 | 50.2 | 0.995 sq mi |
| 06263 | Rogers | Connecticut | 328 | 30.7 | 0.221 sq mi |
| 06264 | Scotland, Connecticut | Connecticut | 189 | 45.4 | 1.438 sq mi |
| 06265 | South Willington | Connecticut | — | — | — |
| 06266 | Windham, Connecticut | Connecticut | 485 | 41.8 | 0.975 sq mi |
| 06267 | Woodstock | Connecticut | — | — | — |
| 06268 | Storrs, Connecticut | Connecticut | 15,681 | 23 | 26.41 sq mi |
| 06269 | Storrs, Connecticut | Connecticut | 6,515 | 21 | 1.29 sq mi |
| 06277 | — | Connecticut | 4,143 | 42.6 | 23.99 sq mi |
| 06278 | — | Connecticut | 4,602 | 41.7 | 40.31 sq mi |
| 06279 | Willington, Connecticut | Connecticut | 6,358 | 38.3 | 33.49 sq mi |
| 06280 | — | Connecticut | 3,300 | 46 | 15.08 sq mi |
| 06281 | East Woodstock | Connecticut | 7,099 | 44.4 | 56.3 sq mi |
| 06282 | Woodstock, Connecticut | Connecticut | 1,100 | 43.1 | 6.12 sq mi |
| 06320 | New London, Connecticut | Connecticut | 27,831 | 31.6 | 7.24 sq mi |
| 06330 | Baltic, Connecticut | Connecticut | 3,372 | 39.6 | 18.89 sq mi |
| 06331 | Canterbury, Connecticut | Connecticut | 5,331 | 43 | 40.25 sq mi |
| 06332 | Central Village | Connecticut | 254 | 42.1 | 0.468 sq mi |
| 06333 | — | Connecticut | 6,900 | 44 | 24.1 sq mi |
| 06334 | — | Connecticut | 2,717 | 43.6 | 19.66 sq mi |
| 06335 | Gales Ferry, Connecticut | Connecticut | 6,820 | 41.8 | 11.98 sq mi |
| 06336 | Gilman | Connecticut | 86 | 41.9 | 0.612 sq mi |
| 06338 | Ledyard, Connecticut | Connecticut | — | — | — |
| 06339 | Ledyard, Connecticut | Connecticut | 8,579 | 39.6 | 27.47 sq mi |
| 06340 | — | Connecticut | 31,774 | 31.1 | 26.64 sq mi |
| 06349 | — | Connecticut | — | — | — |
| 06350 | Sprague, Connecticut | Connecticut | 79 | 41.5 | 0.236 sq mi |
| 06351 | Jewett City, Connecticut | Connecticut | 16,562 | 40.8 | 54.78 sq mi |
| 06353 | — | Connecticut | 149 | 43.6 | 0.373 sq mi |
| 06354 | Moosup, Connecticut | Connecticut | 6,333 | 37.6 | 20.77 sq mi |
| 06355 | Mystic, Connecticut | Connecticut | 12,866 | 48.2 | 16.01 sq mi |
| 06357 | Niantic, Connecticut | Connecticut | 12,465 | 44.8 | 11.69 sq mi |
| 06359 | North Stonington, Connecticut | Connecticut | 5,450 | 45.9 | 54.96 sq mi |
| 06360 | Norwich, Connecticut | Connecticut | 38,002 | 37.9 | 28.23 sq mi |
| 06365 | Preston City | Connecticut | 4,972 | 45.3 | 31.72 sq mi |
| 06370 | Oakdale | Connecticut | 7,605 | 41 | 24.59 sq mi |
| 06371 | New London, Connecticut | Connecticut | 10,108 | 49.7 | 59.48 sq mi |
| 06372 | Old Mystic, Connecticut | Connecticut | — | — | — |
| 06373 | Oneco | Connecticut | 386 | 36.4 | 3.456 sq mi |
| 06374 | — | Connecticut | 8,683 | 39.9 | 26.25 sq mi |
| 06375 | Quaker Hill, Connecticut | Connecticut | 3,701 | 43.7 | 8.8 sq mi |
| 06376 | South Lyme | Connecticut | 37 | 56.5 | 0.113 sq mi |
| 06377 | — | Connecticut | 2,986 | 38.4 | 16.71 sq mi |
| 06378 | — | Connecticut | 5,493 | 52 | 22.6 sq mi |
| 06379 | Pawcatuck, Connecticut | Connecticut | 9,189 | 42.7 | 12.96 sq mi |
| 06380 | Taftville, Connecticut | Connecticut | 2,928 | 35.7 | 1.001 sq mi |
| 06382 | Uncasville, Connecticut | Connecticut | 12,096 | 40.5 | 19.16 sq mi |
| 06383 | Versailles | Connecticut | — | — | — |
| 06384 | Voluntown, Connecticut | Connecticut | 2,701 | 43.4 | 38.76 sq mi |
| 06385 | Jordan | Connecticut | 16,406 | 46.6 | 26.52 sq mi |
| 06387 | Wauregan, Connecticut | Connecticut | 292 | 29.8 | 0.111 sq mi |
| 06388 | Mystic, Connecticut | Connecticut | — | — | — |
| 06389 | — | Connecticut | 56 | 36.7 | 0.131 sq mi |
| 06401 | Ansonia, Connecticut | Connecticut | 19,305 | 38.1 | 6.17 sq mi |
| 06403 | Beacon Falls, Connecticut | Connecticut | 5,948 | 42 | 9.78 sq mi |
| 06404 | Botsford, Connecticut | Connecticut | — | — | — |
| 06405 | Branford Center | Connecticut | 27,889 | 46.8 | 22.99 sq mi |
| 06408 | Cheshire, Connecticut | Connecticut | — | — | — |
| 06409 | Centerbrook, Connecticut | Connecticut | 769 | 44.8 | 1.42 sq mi |
| 06410 | — | Connecticut | 29,808 | 42.1 | 32.86 sq mi |
| 06411 | — | Connecticut | — | — | — |
| 06412 | Tylerville | Connecticut | 4,088 | 48.4 | 16.83 sq mi |
| 06413 | — | Connecticut | 13,562 | 44.3 | 16.94 sq mi |
| 06414 | Cobalt | Connecticut | 200 | 47.7 | 0.282 sq mi |
| 06415 | — | Connecticut | 17,265 | 41 | 55.46 sq mi |
| 06416 | — | Connecticut | 14,389 | 42.8 | 12.13 sq mi |
| 06417 | — | Connecticut | 4,883 | 44.1 | 14.17 sq mi |
| 06418 | Derby, Connecticut | Connecticut | 13,159 | 40.5 | 5.42 sq mi |
| 06419 | Killingworth, Connecticut | Connecticut | 6,659 | 46.3 | 35.81 sq mi |
| 06420 | Salem, Connecticut | Connecticut | 4,236 | 41.9 | 30.06 sq mi |
| 06422 | Durham, Connecticut | Connecticut | 7,398 | 42.8 | 23.78 sq mi |
| 06423 | East Haddam, Connecticut | Connecticut | 5,235 | 44.2 | 40.16 sq mi |
| 06424 | — | Connecticut | 12,962 | 43.5 | 42.15 sq mi |
| 06426 | — | Connecticut | 3,211 | 56.2 | 7.07 sq mi |
| 06430 | Fairfield, Connecticut | Connecticut | — | — | — |
| 06437 | — | Connecticut | 22,604 | 46.6 | 48.26 sq mi |
| 06438 | — | Connecticut | 2,575 | 44.8 | 13.21 sq mi |
| 06439 | Hadlyme | Connecticut | — | — | — |
| 06440 | Hawleyville, Connecticut | Connecticut | — | — | — |
| 06441 | Higganum, Connecticut | Connecticut | 5,606 | 44.1 | 26.25 sq mi |
| 06442 | Ivoryton, Connecticut | Connecticut | 2,757 | 43.8 | 3.369 sq mi |
| 06443 | — | Connecticut | 18,291 | 46.6 | 36.72 sq mi |
| 06444 | Marion, Connecticut | Connecticut | 290 | 39.7 | 0.658 sq mi |
| 06447 | Marlborough, Connecticut | Connecticut | 6,512 | 43 | 23.53 sq mi |
| 06450 | Meriden, Connecticut | Connecticut | 36,561 | 38 | 14.18 sq mi |
| 06451 | Meriden, Connecticut | Connecticut | 24,869 | 37 | 10 sq mi |
| 06455 | Middlefield, Connecticut | Connecticut | 3,241 | 45.5 | 11.45 sq mi |
| 06456 | Middle Haddam | Connecticut | 352 | 49.8 | 1.278 sq mi |
| 06457 | Middletown, Connecticut | Connecticut | 48,837 | 37.1 | 42.35 sq mi |
| 06459 | Middletown, Connecticut | Connecticut | — | — | — |
| 06460 | Milford, Connecticut | Connecticut | 37,196 | 43.8 | 13.72 sq mi |
| 06461 | Milford, Connecticut | Connecticut | 14,796 | 43.1 | 10.19 sq mi |
| 06467 | Milldale (Southington) | Connecticut | 119 | 46.5 | 1,916,278 sq ft |
| 06468 | — | Connecticut | 19,735 | 42.5 | 26.25 sq mi |
| 06469 | Moodus, Connecticut | Connecticut | 3,240 | 42.9 | 10.43 sq mi |
| 06470 | — | Connecticut | 16,186 | 43.5 | 37.82 sq mi |
| 06471 | — | Connecticut | 7,720 | 45 | 9.15 sq mi |
| 06472 | Northford | Connecticut | 6,929 | 44.1 | 18.11 sq mi |
| 06473 | — | Connecticut | 24,790 | 45 | 21.89 sq mi |
| 06474 | North Westchester | Connecticut | — | — | — |
| 06475 | Old Saybrook Center, Connecticut | Connecticut | 10,224 | 50.3 | 16.91 sq mi |
| 06477 | Orange, Connecticut | Connecticut | 14,585 | 44.7 | 17.42 sq mi |
| 06478 | Oxford, Connecticut | Connecticut | 12,960 | 43.2 | 33.32 sq mi |
| 06479 | Plantsville, Connecticut | Connecticut | 10,715 | 42.2 | 7.4 sq mi |
| 06480 | — | Connecticut | 9,663 | 42.9 | 24.86 sq mi |
| 06481 | Middlefield, Connecticut | Connecticut | 1,303 | 42 | 1.805 sq mi |
| 06482 | Sandy Hook, Connecticut | Connecticut | 11,530 | 41.8 | 21.11 sq mi |
| 06483 | — | Connecticut | 16,743 | 41.8 | 14.98 sq mi |
| 06484 | Shelton, Connecticut | Connecticut | 40,007 | 44 | 31.9 sq mi |
| 06487 | South Britain | Connecticut | — | — | — |
| 06488 | — | Connecticut | 20,175 | 50.2 | 40.07 sq mi |
| 06489 | — | Connecticut | 32,485 | 43.6 | 28.49 sq mi |
| 06491 | Stevenson | Connecticut | — | — | — |
| 06492 | Yalesville, Connecticut | Connecticut | 45,949 | 42.9 | 40.43 sq mi |
| 06493 | Wallingford, Connecticut | Connecticut | — | — | — |
| 06494 | — | Connecticut | — | — | — |
| 06495 | Wallingford, Connecticut | Connecticut | — | — | — |
| 06497 | Stratford, Connecticut | Connecticut | — | — | — |
| 06498 | — | Connecticut | 6,960 | 47 | 16.15 sq mi |
| 06501 | New Haven, Connecticut | Connecticut | — | — | — |
| 06502 | New Haven, Connecticut | Connecticut | — | — | — |
| 06503 | New Haven, Connecticut | Connecticut | — | — | — |
| 06504 | New Haven, Connecticut | Connecticut | — | — | — |
| 06505 | New Haven, Connecticut | Connecticut | — | — | — |
| 06506 | New Haven, Connecticut | Connecticut | — | — | — |
| 06507 | New Haven, Connecticut | Connecticut | — | — | — |
| 06508 | New Haven, Connecticut | Connecticut | — | — | — |
| 06509 | New Haven, Connecticut | Connecticut | — | — | — |
| 06510 | New Haven, Connecticut | Connecticut | 3,563 | 28.2 | 0.243 sq mi |
| 06511 | New Haven, Connecticut | Connecticut | 54,890 | 28.8 | 6.04 sq mi |
| 06512 | New Haven, Connecticut | Connecticut | 30,715 | 42.3 | 11.11 sq mi |
| 06513 | New Haven, Connecticut | Connecticut | 38,210 | 33 | 7.66 sq mi |
| 06514 | — | Connecticut | 26,612 | 37.4 | 11.38 sq mi |
| 06515 | New Haven, Connecticut | Connecticut | 18,213 | 30.7 | 4.59 sq mi |
| 06516 | West Haven, Connecticut | Connecticut | 54,849 | 36.2 | 10.9 sq mi |
| 06517 | Whitneyville | Connecticut | 15,012 | 41.8 | 5.51 sq mi |
| 06518 | — | Connecticut | 20,015 | 32.8 | 16.45 sq mi |
| 06519 | New Haven, Connecticut | Connecticut | 15,124 | 28.8 | 1.762 sq mi |
| 06520 | New Haven, Connecticut | Connecticut | — | — | — |
| 06521 | New Haven, Connecticut | Connecticut | — | — | — |
| 06524 | — | Connecticut | 5,674 | 44.8 | 21.43 sq mi |
| 06525 | New Haven, Connecticut | Connecticut | 9,091 | 47.5 | 19.24 sq mi |
| 06530 | New Haven, Connecticut | Connecticut | — | — | — |
| 06531 | New Haven, Connecticut | Connecticut | — | — | — |
| 06532 | New Haven, Connecticut | Connecticut | — | — | — |
| 06533 | New Haven, Connecticut | Connecticut | — | — | — |
| 06534 | New Haven, Connecticut | Connecticut | — | — | — |
| 06535 | New Haven, Connecticut | Connecticut | — | — | — |
| 06536 | New Haven, Connecticut | Connecticut | — | — | — |
| 06537 | New Haven, Connecticut | Connecticut | — | — | — |
| 06538 | New Haven, Connecticut | Connecticut | — | — | — |
| 06540 | New Haven, Connecticut | Connecticut | — | — | — |
| 06601 | Bridgeport, Connecticut | Connecticut | — | — | — |
| 06602 | Bridgeport, Connecticut | Connecticut | — | — | — |
| 06604 | Bridgeport, Connecticut | Connecticut | 28,654 | 28.6 | 3.523 sq mi |
| 06605 | Bridgeport, Connecticut | Connecticut | 23,353 | 32.2 | 2.665 sq mi |
| 06606 | Bridgeport, Connecticut | Connecticut | 47,410 | 33.9 | 5.44 sq mi |
| 06607 | Bridgeport, Connecticut | Connecticut | 7,677 | 30.5 | 1.562 sq mi |
| 06608 | Bridgeport, Connecticut | Connecticut | 12,933 | 29.9 | 1.171 sq mi |
| 06610 | Bridgeport, Connecticut | Connecticut | 23,522 | 35.7 | 3.103 sq mi |
| 06611 | Trumbull, Connecticut | Connecticut | 36,919 | 43.4 | 24.17 sq mi |
| 06612 | Easton, Connecticut | Connecticut | 7,499 | 45.3 | 28.03 sq mi |
| 06614 | Stratford, Connecticut | Connecticut | 33,303 | 43.3 | 11.55 sq mi |
| 06615 | Stratford, Connecticut | Connecticut | 18,493 | 38.4 | 7.44 sq mi |
| 06673 | Bridgeport, Connecticut | Connecticut | — | — | — |
| 06699 | Bridgeport, Connecticut | Connecticut | — | — | — |
| 06701 | Waterbury, Connecticut | Connecticut | — | — | — |
| 06702 | Waterbury, Connecticut | Connecticut | 3,208 | 35.9 | 0.654 sq mi |
| 06703 | Waterbury, Connecticut | Connecticut | — | — | — |
| 06704 | Waterbury, Connecticut | Connecticut | 25,174 | 32.9 | 8.13 sq mi |
| 06705 | Waterbury, Connecticut | Connecticut | 26,547 | 35.7 | 5.57 sq mi |
| 06706 | Waterbury, Connecticut | Connecticut | 14,272 | 35.9 | 3.938 sq mi |
| 06708 | Waterbury, Connecticut | Connecticut | 29,962 | 37.6 | 9.59 sq mi |
| 06710 | Waterbury, Connecticut | Connecticut | 11,088 | 28.9 | 0.986 sq mi |
| 06712 | — | Connecticut | 9,619 | 43.6 | 14.45 sq mi |
| 06716 | Wolcott, Connecticut | Connecticut | 17,609 | 42.4 | 21.13 sq mi |
| 06720 | Waterbury, Connecticut | Connecticut | — | — | — |
| 06721 | Waterbury, Connecticut | Connecticut | — | — | — |
| 06722 | Waterbury, Connecticut | Connecticut | — | — | — |
| 06723 | Waterbury, Connecticut | Connecticut | — | — | — |
| 06724 | Waterbury, Connecticut | Connecticut | — | — | — |
| 06725 | Waterbury, Connecticut | Connecticut | — | — | — |
| 06726 | Waterbury, Connecticut | Connecticut | — | — | — |
| 06749 | Waterbury, Connecticut | Connecticut | — | — | — |
| 06750 | Bantam, Connecticut | Connecticut | 1,399 | 46.6 | 7.65 sq mi |
| 06751 | Bethlehem Village | Connecticut | 3,577 | 46.9 | 19.23 sq mi |
| 06752 | Bridgewater, Connecticut | Connecticut | 1,812 | 49.8 | 17.61 sq mi |
| 06753 | — | Connecticut | — | — | — |
| 06754 | Cornwall Bridge | Connecticut | 1,724 | 46.1 | 32.89 sq mi |
| 06755 | Gaylordsville, Connecticut | Connecticut | 1,122 | 43.5 | 4.71 sq mi |
| 06756 | — | Connecticut | 2,899 | 48.7 | 37.44 sq mi |
| 06757 | Kent, Connecticut | Connecticut | 2,314 | 49.1 | 35.03 sq mi |
| 06758 | Lakeside | Connecticut | 387 | 46.8 | 2.666 sq mi |
| 06759 | — | Connecticut | 5,790 | 48.3 | 51.11 sq mi |
| 06762 | Middlebury, Connecticut | Connecticut | 7,726 | 43.7 | 18.12 sq mi |
| 06763 | — | Connecticut | 2,077 | 46.6 | 16 sq mi |
| 06770 | Naugatuck, Connecticut | Connecticut | 32,418 | 37.9 | 16.85 sq mi |
| 06776 | — | Connecticut | 27,058 | 41.4 | 57.28 sq mi |
| 06777 | New Preston, Connecticut | Connecticut | 1,703 | 49.7 | 16.94 sq mi |
| 06778 | Northfield, Connecticut | Connecticut | 1,433 | 44.9 | 7.13 sq mi |
| 06779 | Oakville, Connecticut | Connecticut | 8,838 | 42 | 3.252 sq mi |
| 06781 | Pequabuck | Connecticut | — | — | — |
| 06782 | — | Connecticut | 2,425 | 43.3 | 7.76 sq mi |
| 06783 | Roxbury, Connecticut | Connecticut | 2,201 | 49.7 | 25.92 sq mi |
| 06784 | Sherman, Connecticut | Connecticut | 3,779 | 47.6 | 24.97 sq mi |
| 06785 | South Kent, Connecticut | Connecticut | 681 | 48.3 | 13.89 sq mi |
| 06786 | Terryville, Connecticut | Connecticut | 9,812 | 41.4 | 14.55 sq mi |
| 06787 | Thomaston, Connecticut | Connecticut | 7,958 | 42.4 | 12.46 sq mi |
| 06790 | Torrington, Connecticut | Connecticut | 36,902 | 42.3 | 42.14 sq mi |
| 06791 | Northwest Harwinton, Connecticut | Connecticut | 5,680 | 45.5 | 31.2 sq mi |
| 06792 | Torrington, Connecticut | Connecticut | — | — | — |
| 06793 | — | Connecticut | 1,245 | 51.3 | 14.23 sq mi |
| 06794 | Marble Dale | Connecticut | 1,101 | 48.3 | 13.58 sq mi |
| 06795 | — | Connecticut | 14,485 | 44.8 | 26.66 sq mi |
| 06796 | West Cornwall | Connecticut | 1,027 | 50.7 | 37.32 sq mi |
| 06798 | — | Connecticut | 10,063 | 46.6 | 36.62 sq mi |
| 06801 | Bethel, Connecticut | Connecticut | 18,946 | 41.1 | 17.01 sq mi |
| 06804 | — | Connecticut | 16,449 | 43.3 | 20.36 sq mi |
| 06807 | Cos Cob, Connecticut | Connecticut | 7,067 | 41.4 | 3.286 sq mi |
| 06810 | Danbury, Connecticut | Connecticut | 49,298 | 34.4 | 20.96 sq mi |
| 06811 | Danbury, Connecticut | Connecticut | 31,961 | 39.6 | 23.18 sq mi |
| 06812 | New Fairfield, Connecticut | Connecticut | 14,327 | 43.6 | 25.15 sq mi |
| 06813 | Danbury, Connecticut | Connecticut | — | — | — |
| 06814 | Danbury, Connecticut | Connecticut | — | — | — |
| 06816 | Danbury, Connecticut | Connecticut | — | — | — |
| 06817 | Danbury, Connecticut | Connecticut | — | — | — |
| 06820 | Darien, Connecticut | Connecticut | 21,003 | 38.9 | 13.81 sq mi |
| 06824 | Fairfield, Connecticut | Connecticut | 33,995 | 38.7 | 20.87 sq mi |
| 06825 | — | Connecticut | 22,438 | 40.8 | 6.77 sq mi |
| 06828 | — | Connecticut | — | — | — |
| 06829 | Georgetown, Connecticut | Connecticut | — | — | — |
| 06830 | Greenwich, Connecticut | Connecticut | 24,141 | 42.1 | 14.77 sq mi |
| 06831 | — | Connecticut | 15,607 | 45.9 | 28.04 sq mi |
| 06836 | Greenwich, Connecticut | Connecticut | — | — | — |
| 06838 | Greens Farms | Connecticut | — | — | — |
| 06840 | New Canaan, Connecticut | Connecticut | 19,846 | 42.9 | 22.55 sq mi |
| 06850 | Norwalk, Connecticut | Connecticut | 18,583 | 39.6 | 6.79 sq mi |
| 06851 | Norwalk, Connecticut | Connecticut | 26,556 | 40.9 | 7.7 sq mi |
| 06852 | Norwalk, Connecticut | Connecticut | — | — | — |
| 06853 | Norwalk, Connecticut | Connecticut | 3,577 | 40.6 | 1.404 sq mi |
| 06854 | Norwalk, Connecticut | Connecticut | 29,215 | 35.2 | 5.98 sq mi |
| 06855 | Norwalk, Connecticut | Connecticut | 7,933 | 38.6 | 3.044 sq mi |
| 06856 | Norwalk, Connecticut | Connecticut | 190 | 35.2 | 76,060 sq ft |
| 06857 | Norwalk, Connecticut | Connecticut | — | — | — |
| 06858 | Norwalk, Connecticut | Connecticut | — | — | — |
| 06860 | Norwalk, Connecticut | Connecticut | — | — | — |
| 06870 | Old Greenwich, Connecticut | Connecticut | 7,453 | 41.3 | 2.934 sq mi |
| 06875 | Redding, Connecticut | Connecticut | — | — | — |
| 06876 | Redding, Connecticut | Connecticut | — | — | — |
| 06877 | — | Connecticut | 24,934 | 43.5 | 35.05 sq mi |
| 06878 | Riverside, Connecticut | Connecticut | 8,034 | 41.7 | 3.005 sq mi |
| 06879 | Ridgefield, Connecticut | Connecticut | — | — | — |
| 06880 | Westport, Connecticut | Connecticut | 26,644 | 45 | 21.55 sq mi |
| 06881 | Westport, Connecticut | Connecticut | — | — | — |
| 06883 | Weston, Connecticut | Connecticut | 10,232 | 43.3 | 20.71 sq mi |
| 06888 | Westport, Connecticut | Connecticut | — | — | — |
| 06889 | Westport, Connecticut | Connecticut | — | — | — |
| 06890 | Southport, Connecticut | Connecticut | 4,391 | 44.6 | 2.973 sq mi |
| 06896 | — | Connecticut | 9,187 | 46.3 | 32.1 sq mi |
| 06897 | — | Connecticut | 18,327 | 42.9 | 27.28 sq mi |
| 06901 | Stamford, Connecticut | Connecticut | 4,538 | 32.5 | 0.472 sq mi |
| 06902 | Stamford, Connecticut | Connecticut | 64,588 | 35.8 | 10.93 sq mi |
| 06903 | Stamford, Connecticut | Connecticut | 14,585 | 45.3 | 18.27 sq mi |
| 06904 | Stamford, Connecticut | Connecticut | — | — | — |
| 06905 | Stamford, Connecticut | Connecticut | 20,868 | 38.2 | 4.99 sq mi |
| 06906 | Stamford, Connecticut | Connecticut | 9,726 | 36.5 | 1.206 sq mi |
| 06907 | Stamford, Connecticut | Connecticut | 8,988 | 38.9 | 2.086 sq mi |
| 06910 | Stamford, Connecticut | Connecticut | — | — | — |
| 06911 | Stamford, Connecticut | Connecticut | — | — | — |
| 06912 | Stamford, Connecticut | Connecticut | — | — | — |
| 06913 | Stamford, Connecticut | Connecticut | — | — | — |
| 06914 | Stamford, Connecticut | Connecticut | — | — | — |
| 06920 | Stamford, Connecticut | Connecticut | — | — | — |
| 06921 | Stamford, Connecticut | Connecticut | — | — | — |
| 06922 | Stamford, Connecticut | Connecticut | — | — | — |
| 06926 | Stamford, Connecticut | Connecticut | — | — | — |
| 06927 | Stamford, Connecticut | Connecticut | — | — | — |
