ZIP Codes in Trenton, NJ
Trenton uses 11 ZIP codes, all in Mercer County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 11 Trenton ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 08608 | standard | Mercer | 1,250 |
| 08609 | standard | Mercer | 15,938 |
| 08610 | standard | Mercer | 33,465 |
| 08611 | standard | Mercer | 31,995 |
| 08618 | standard | Mercer | 35,634 |
| 08619 | standard | Mercer | 24,089 |
| 08620 | standard | Mercer | 11,621 |
| 08628 | standard | Mercer | 9,831 |
| 08629 | standard | Mercer | 13,013 |
| 08638 | standard | Mercer | 22,816 |
| 08690 | standard | Mercer | 18,841 |
Finding a ZIP+4 in Trenton
Knowing which of these 11 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 Trenton 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 Trenton addresses and download it complete.