| County Name | Middlesex County |
| FIPS Code | 09007 |
| Population | 165676 |
| Unemployment Rate | 7.1% |
| Time Zone: | Eastern Daylight Time |
List of All Zipcodes in Middlesex County, Connecticut | |||||||
|---|---|---|---|---|---|---|---|
| ZIP Code | ZIP Code Name | Population | ZIP Type | ||||
| Berlin | 18565 | Non-Unique | ||||
| South Glastonbury | 5651 | Non-Unique | ||||
| Centerbrook | 693 | Non-Unique | ||||
| Chester | 3994 | Non-Unique | ||||
| Clinton | 13235 | Non-Unique | ||||
| Colchester | 16857 | Non-Unique | ||||
| Cromwell | 14005 | Non-Unique | ||||
| Deep River | 4629 | Non-Unique | ||||
| Killingworth | 6525 | Non-Unique | ||||
| Salem | 4182 | Non-Unique | ||||
| Durham | 7388 | Non-Unique | ||||
| East Haddam | 5097 | Non-Unique | ||||
| East Hampton | 12808 | Non-Unique | ||||
| Essex | 3245 | Non-Unique | ||||
| Haddam | 2550 | Non-Unique | ||||
| Higganum | 5438 | Non-Unique | ||||
| Ivoryton | 2745 | Non-Unique | ||||
| Madison | 18269 | Non-Unique | ||||
| Middlefield | 3148 | Non-Unique | ||||
| Middletown | 47648 | Non-Unique | ||||
| Middletown | 819 | Non-Unique | ||||
| Moodus | 3209 | Non-Unique | ||||
| Old Saybrook | 10242 | Non-Unique | ||||
| Portland | 9508 | Non-Unique | ||||
| Rockfall | 1277 | Non-Unique | ||||
| Westbrook | 6963 | Non-Unique | ||||
| Cobalt | 214 | PO Box | ||||
| Middle Haddam | 295 | PO Box | ||||
| List of Counties that Border Middlesex County, Connecticut |
|---|
| Hartford, CT |
| Middlesex, CT |
| New Haven, CT |
| New London, CT |