ZIP Codes in Lowell, MA
Lowell uses 4 ZIP codes, all in Middlesex County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 4 Lowell ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 01850 | standard | Middlesex | 17,740 |
| 01851 | standard | Middlesex | 33,403 |
| 01852 | standard | Middlesex | 37,144 |
| 01854 | standard | Middlesex | 30,081 |
Finding a ZIP+4 in Lowell
Knowing which of these 4 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 Lowell 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 Lowell addresses and download it complete.