ZIP Codes in Hartford, CT
Hartford uses 6 ZIP codes, all in Capitol County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 6 Hartford ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 06103 | standard | Capitol | 2,949 |
| 06105 | standard | Capitol | 19,174 |
| 06106 | standard | Capitol | 36,322 |
| 06112 | standard | Capitol | 22,333 |
| 06114 | standard | Capitol | 26,458 |
| 06120 | standard | Capitol | 13,926 |
Finding a ZIP+4 in Hartford
Knowing which of these 6 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Hartford street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Hartford addresses and download it complete.