| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 78520 | Brownsville | Cameron County | Standard |
| 78521 | Brownsville | Cameron County | Standard |
| 78522 | Brownsville | Cameron County | PO Box |
| 78523 | Brownsville | Cameron County | PO Box |
| 78526 | Brownsville | Cameron County | Standard |
| 78535 | Combes | Cameron County | PO Box |
| 78550 | Harlingen | Cameron County | Standard |
| 78551 | Harlingen | Cameron County | PO Box |
| 78552 | Harlingen | Cameron County | Standard |
| 78553 | Harlingen | Cameron County | PO Box |
| 78559 | La Feria | Cameron County | Standard |
| 78566 | Los Fresnos | Cameron County | Standard |
| 78567 | Los Indios | Cameron County | PO Box |
| 78568 | Lozano | Cameron County | PO Box |
| 78575 | Olmito | Cameron County | Standard |
| 78578 | Port Isabel | Cameron County | Standard |
| 78583 | Rio Hondo | Cameron County | Standard |
| 78586 | San Benito | Cameron County | Standard |
| 78592 | Santa Maria | Cameron County | PO Box |
| 78593 | Santa Rosa | Cameron County | Standard |
| 78597 | South Padre Island | Cameron County | Standard |