ZIP Codes in Farmington, NM
Farmington uses 3 ZIP codes, all in San Juan County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 3 Farmington ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 87401 | standard | San Juan | 45,229 |
| 87402 | standard | San Juan | 11,418 |
| 87499 | standard | San Juan | 903 |
Finding a ZIP+4 in Farmington
Knowing which of these 3 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 Farmington 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 Farmington addresses and download it complete.