Middlesex
Connecticut
22
Total ZIPs
164,856
Total Population
ZIP Codes in Middlesex
| ZIP Code | City | Population | Density |
|---|---|---|---|
| 06457 | Middletown | 47,648 | 449 |
| 06416 | Cromwell | 14,005 | 466 |
| 06413 | Clinton | 13,235 | 316 |
| 06424 | East Hampton | 12,808 | 123 |
| 06475 | Old Saybrook | 10,242 | 263 |
| 06480 | Portland | 9,508 | 157 |
| 06422 | Durham | 7,388 | 121 |
| 06498 | Westbrook | 6,963 | 170 |
| 06419 | Killingworth | 6,525 | 71 |
| 06441 | Higganum | 5,438 | 81 |
| 06423 | East Haddam | 5,097 | 51 |
| 06417 | Deep River | 4,629 | 132 |
| 06412 | Chester | 3,994 | 96 |
| 06426 | Essex | 3,245 | 219 |
| 06469 | Moodus | 3,209 | 123 |
| 06455 | Middlefield | 3,148 | 112 |
| 06442 | Ivoryton | 2,745 | 318 |
| 06438 | Haddam | 2,550 | 80 |
| 06481 | Rockfall | 1,277 | 274 |
| 06409 | Centerbrook | 693 | 198 |
| 06456 | Middle Haddam | 295 | 131 |
| 06414 | Cobalt | 214 | 285 |
All data sourced from the U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023).
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.