ZIP Codes in Weslaco, TX
Weslaco uses 2 ZIP codes, all in Hidalgo County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 2 Weslaco ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 78596 | standard | Hidalgo | 39,518 |
| 78599 | standard | Hidalgo | 35,454 |
Finding a ZIP+4 in Weslaco
Knowing which of these 2 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 Weslaco 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 Weslaco addresses and download it complete.